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  • How can I replace red in an image with a certain shade of gray?

    - by Malcolm Frexner
    In this image I have to change red to grey: I know I can just set the saturation to zero, but then the result is a grey that is to dark. I could just change the brightness, but that would also change the left lower part of the picture: Is there an adjustment that only works on the red parts of the image? I can't use a selection, because the setting has to be applied to lots of images. EDIT I tried to use "replace adjustment tool", but that did not work well for the shdows and bright parts of the image, even with the largest fuzzines. I used blue as the replacement colour, to have a better impression of what it does.

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  • get eigenvalue pca with java

    - by Muhamad Burhanudin
    I try use PCA to reduce dimention, and i use jama for help me using matrix. but, i got problem when get eigenvalue with jama. for example i hava 2 image dimention 100x100, then i create single matrix 2 image x (100x100). there is 20.000 pixel. and how to get reduction with eigenvalue? this is sample my code : public static void main(String[] args) { BufferedImage bi; int[] rgb; int R, G, B; // int[] jum; double[][] gray = new double[500][500] ; String[] baris = new String[1000]; try { //bi = ImageIO.read(new File("D:\\c.jpg")); int[][] pixelData = new int[bi.getHeight() * bi.getWidth()][3]; int counter = 0; for (int i = 0; i < bi.getHeight(); i++) { for (int j = 0; j < bi.getWidth(); j++) { gray[i][j] = getPixelData(bi, i, j); // R = getR(bi, i, j); //G = getG(bi, i, j); //B = getB(bi, i, j); //jum = R + G + B; // gray[counter] = Double.toString(R + G + B / 3); // System.out.println("Gray " +gray); //for (int k = 0; k < rgb.length; k++) { // pixelData[counter][k] = rgb[k]; // } counter++; } } } catch (IOException e) { e.printStackTrace(); } Matrix matrix = new Matrix(gray); PCA pca = new PCA(matrix); pca.getEigenvalue(6); String n = pca.toString(); System.err.println("nilai n "+n); //double dete = pcadete(matrix,3600); } private static int getPixelData(BufferedImage bi, int x, int y) { int argb = bi.getRGB(y, x); int r, g, b; int gray; int rgb[] = new int[]{ (argb >> 16) & 0xff, //red (argb >> 8) & 0xff, //green (argb) & 0xff //blue }; r = rgb[0]; g = rgb[1]; b = rgb[2]; gray = (r + g + b) / 3; System.out.println("gray: " + gray); return gray; } when i show eigenvalue in this code : PCA pca = new PCA(matrix); pca.getEigenvalue(6); String n = pca.toString(); System.err.println("nilai n "+n); Result is : nilai n PCA@c3e9e9 Can, u tell me what way to get eigenvalue and reduction dimension.

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  • Winsock tcp/ip Socket listening but connection refused, race condition?

    - by Wayne
    Hello folks. This involves two automated unit tests which each start up a tcp/ip server that creates a non-blocking socket then bind()s and listen()s in a loop on select() for a client that connects and downloads some data. The catch is that they work perfectly when run separately but when run as a test suite, the second test client will fail to connect with WSACONNREFUSED... UNLESS there is a Thread.Sleep() of several seconds between them??!!! Interestingly, there is retry loop every 1 second for connecting after any failure. So the second test loops for a while until timeout after 10 minutes. During that time, netstat -na shows the correct port number is in the LISTEN state for the server socket. So if it is in the listen state? Why won't it accept the connection? In the code, there are log messages that show the select NEVER even gets a socket ready to read (which means ready to accept a connection when it applies to a listening socket). Obviously the problem must be related to some race condition between finishing one test which means close() and shutdown() on each end of the socket, and the start up of the next. This wouldn't be so bad if the retry logic allowed it to connect eventually after a couple of seconds. However it seems to get "gummed up" and won't even retry. However, for some strange reason the listening socket SAYS it's in the LISTEN state even through keeps refusing connections. So that means it's the Windoze O/S which is actually catching the SYN packet and returning a RST packet (which means "Connection Refused"). The only other time I ever saw this error was when the code had a problem that caused hundreds of sockets to get stuck in TIME_WAIT state. But that's not the case here. netstat shows only about a dozen sockets with only 1 or 2 in TIME_WAIT at any given moment. Please help.

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  • How to Treat Race Condition of Session in Web Application?

    - by Morgan Cheng
    I was in a ASP.NET application has heavy traffic of AJAX requests. Once a user login our web application, a session is created to store information of this user's state. Currently, our solution to keep session data consistent is quite simple and brutal: each request needs to acquire a exclusive lock before being processed. This works fine for tradition web application. But, when the web application turns to support AJAX, it turns to not efficient. It is quite possible that multiple AJAX requests are sent to server at the same time without reloading the web page. If all AJAX requests are serialized by the exclusive lock, the response is not so quick. Anyway, many AJAX requests that doesn't access same session variables are blocked as well. If we don't have a exclusive lock for each requests, then we need to treat all race condition carefully to avoid dead lock. I'm afraid that would make the code complex and buggy. So, is there any best practice to keep session data consistent and keep code simple and clean?

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  • How do I avoid a race condition in my Rails app?

    - by Cathal
    Hi, I have a really simple Rails application that allows users to register their attendance on a set of courses. The ActiveRecord models are as follows: class Course < ActiveRecord::Base has_many :scheduled_runs ... end class ScheduledRun < ActiveRecord::Base belongs_to :course has_many :attendances has_many :attendees, :through => :attendances ... end class Attendance < ActiveRecord::Base belongs_to :user belongs_to :scheduled_run, :counter_cache => true ... end class User < ActiveRecord::Base has_many :attendances has_many :registered_courses, :through => :attendances, :source => :scheduled_run end A ScheduledRun instance has a finite number of places available, and once the limit is reached, no more attendances can be accepted. def full? attendances_count == capacity end attendances_count is a counter cache column holding the number of attendance associations created for a particular ScheduledRun record. My problem is that I don't fully know the correct way to ensure that a race condition doesn't occur when 1 or more people attempt to register for the last available place on a course at the same time. My Attendance controller looks like this: class AttendancesController < ApplicationController before_filter :load_scheduled_run before_filter :load_user, :only => :create def new @user = User.new end def create unless @user.valid? render :action => 'new' end @attendance = @user.attendances.build(:scheduled_run_id => params[:scheduled_run_id]) if @attendance.save flash[:notice] = "Successfully created attendance." redirect_to root_url else render :action => 'new' end end protected def load_scheduled_run @run = ScheduledRun.find(params[:scheduled_run_id]) end def load_user @user = User.create_new_or_load_existing(params[:user]) end end As you can see, it doesn't take into account where the ScheduledRun instance has already reached capacity. Any help on this would be greatly appreciated.

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  • OpenCV Python HoughCircles error

    - by Dan
    Hi, I'm working on a program that detects circular shapes in images. I decided a Hough Transform would be the best, and I found one in the OpenCV library. The problem is that when I try to use it I get an error that I have no idea how to fix. Is OpenCV for Python not fully implemented? Is there a fix to the library I need for the program to work? Here's the code: import cv #cv.NamedWindow("camera", 1) capture = cv.CaptureFromCAM(0) while True: img = cv.QueryFrame(capture) gray = cv.CreateImage(cv.GetSize(img), 8, 1) edges = cv.CreateImage(cv.GetSize(img), 8, 1) cv.CvtColor(img, gray, cv.CV_BGR2GRAY) cv.Canny(gray, edges, 50, 200, 3) cv.Smooth(gray, gray, cv.CV_GAUSSIAN, 9, 9) storage = cv.CreateMat(1, 2, cv.CV_32FC3) #This is the line that throws the error cv.HoughCircles(edges, storage, cv.CV_HOUGH_GRADIENT, 2, gray.height/4, 200, 100) #cv.ShowImage("camera", img) if cv.WaitKey(10) == 27: break And here is the error I'm getting: OpenCV Error: Null pinter () in unknown function, file ..\..\..\..\ocv\openc\src\cxcore\cxdatastructs.cpp, line 408 Traceback (most recent call last): File "ellipse-detect-webcam.py", line 20, in cv.HoughCircles(edges, storage, cv.CV_HOUGH_GRADIENT, 2, gray.height/4, 200, 100) cv.error Thanks in advance for the help.

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  • Complicated idea - how to create car racing for my RPG game's players

    - by Donator
    So, I want to create car racing for my RPG game's players. Player can create race and choose how many participants can participate in race. After race is being created, other people can join it. When the maximum participants are collected, race begins. My idea, when the last participant joins, then instantly choose the winner (who's car is the best, that person wins), but how can I do it? If I choose to pick the winner after the last participant joins, then I have to put many queries in one page (select data from table, then delete the race, then select players' cars' statistics and pick the winner and then again, using mysql, send message to everyone). But this idea is really not optimal and it will lag cruelly for that last person. Maybe you have any ideas how I can avoid lag and make it more optimal. Thank you very much.

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  • Heap Algorithmic Issue

    - by OberynMarDELL
    I am having this algorithmic problem that I want to discuss about. Its not about find a solution but about optimization in terms of runtime. So here it is: Suppose we have a race court of Length L and a total of N cars that participate on the race. The race rules are simple. Once a car overtakes an other car the second car is eliminated from the race. The race ends when no more overtakes are possible to happen. The tricky part is that the k'th car has a starting point x[k] and a velocity v[k]. The points are given in an ascending order, but the velocities may differ. What I've done so far: Given that a car can get overtaken only by its previous, I calculated the time that it takes for each car to reach its next one t = (x[i] - x[i+1])/(v[i] - v[i+1]) and I insert these times onto a min heap in O(n log n). So in theory I have to pop the first element in O(logn), find its previous, pop it as well , update its time and insert it in the heap once more, much like a priority queue. My main problem is how I can access specific points of a heap in O(log n) or faster in order to keep the complexity in O(n log n) levels. This program should be written on Haskell so I would like to keep things simple as far as possible EDIT: I Forgot to write the actual point of the race. The goal is to find the order in which cars exit the game

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  • Why can't I build Deluge?

    - by hugemeow
    Deluge is a BitTorrent Client. I am trying to build it from source, since I don't have privilege to install it as root. I am using python setup.py build. But, it failed following message, why? copying deluge/ui/web/themes/images/gray/slider/slider-v-thumb.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/gray/slider copying deluge/ui/web/themes/images/gray/slider/slider-thumb.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/gray/slider copying deluge/ui/web/themes/images/gray/panel/top-bottom.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/gray/panel copying deluge/ui/web/themes/images/gray/tabs/tab-strip-bg.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/gray/tabs copying deluge/ui/web/themes/images/yourtheme/window/right-corners.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/yourtheme/window copying deluge/ui/web/themes/images/yourtheme/window/left-corners.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/yourtheme/window copying deluge/ui/web/themes/images/yourtheme/window/left-right.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/yourtheme/window copying deluge/ui/web/themes/images/yourtheme/window/top-bottom.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/yourtheme/window creating build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/yourtheme/slider copying deluge/ui/web/themes/images/yourtheme/slider/slider-v-thumb.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/yourtheme/slider copying deluge/ui/web/themes/images/yourtheme/slider/slider-thumb.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/yourtheme/slider copying deluge/ui/web/themes/images/yourtheme/slider/slider-bg.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/yourtheme/slider copying deluge/ui/web/themes/images/yourtheme/slider/slider-v-bg.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/yourtheme/slider copying deluge/ui/web/themes/images/yourtheme/panel/top-bottom.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/yourtheme/panel copying deluge/ui/web/themes/images/yourtheme/grid/hmenu-lock.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/yourtheme/grid copying deluge/ui/web/themes/images/yourtheme/grid/hmenu-unlock.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/yourtheme/grid copying deluge/ui/web/themes/images/yourtheme/tabs/tab-strip-bg.png -> build/lib.linux-x86_64-2.4/deluge/ui/web/themes/images/yourtheme/tabs running build_ext building 'libtorrent' extension gcc -pthread -shared -L/usr/lib64 -L/opt/local/lib -lboost_filesystem -lboost_date_time -lboost_iostreams -lboost_python -lboost_thread -lpthread -lssl -lz -o build/lib.linux-x86_64-2.4/deluge/libtorrent.so /usr/bin/ld: cannot find -lboost_filesystem collect2: ld returned 1 exit status error: command 'gcc' failed with exit status 1 [mirror@innov deluge-1.3.5]$ echo $? 1 Edit 1: gcc version and os information $(which gcc) --version gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-52) Copyright (C) 2006 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. cat /etc/issue CentOS release 5.7 (Final) Kernel \r on an \m Edit 2: boost is referenced by setup.py in deluge 114 if OS == "linux": 115 if os.path.exists(os.path.join(sysconfig.get_config_vars()['LIBDIR'], \ 116 'libboost_filesystem-mt.so')): 117 boost_filesystem = "boost_filesystem-mt" 118 elif os.path.exists(os.path.join(sysconfig.get_config_vars()['LIBDIR'], \ 119 'libboost_filesystem.so')): 120 boost_filesystem = "boost_filesystem" 121 if os.path.exists(os.path.join(sysconfig.get_config_vars()['LIBDIR'], \ 122 'libboost_date_time-mt.so')): 123 boost_date_time = "boost_date_time-mt" 124 elif os.path.exists(os.path.join(sysconfig.get_config_vars()['LIBDIR'], \ 125 'libboost_date_time.so')): 126 boost_date_time = "boost_date_time" 127 if os.path.exists(os.path.join(sysconfig.get_config_vars()['LIBDIR'], \ 128 'libboost_thread-mt.so')): 129 boost_thread = "boost_thread-mt" 130 elif os.path.exists(os.path.join(sysconfig.get_config_vars()['LIBDIR'], \ 131 'libboost_thread.so')): 132 boost_thread = "boost_thread" 133 134 if 'boost_filesystem' not in vars(): 135 boost_filesystem = "boost_filesystem-mt" 136 if 'boost_date_time' not in vars(): 137 boost_date_time = "boost_date_time-mt" 138 if 'boost_thread' not in vars(): 139 boost_thread = "boost_thread-mt" 140 141 elif OS == "freebsd": 142 boost_filesystem = "boost_filesystem" 143 boost_date_time = "boost_date_time" 144 boost_thread = "boost_thread" 145 else: 146 boost_filesystem = "boost_filesystem-mt" 147 boost_date_time = "boost_date_time-mt" 148 boost_thread = "boost_thread-mt" 149 150 librariestype = [boost_filesystem, boost_date_time, 151 boost_thread, 'z', 'pthread', 'ssl', 'crypto']

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  • Can my tortoise vs. hare race be improved?

    - by FredOverflow
    Here is my code for detecting cycles in a linked list: do { hare = hare.next(); if (hare == back) return; hare = hare.next(); if (hare == back) return; tortoise = tortoise.next(); } while (tortoise != hare); throw new AssertionError("cyclic linkage"); Is there a way to get rid of the code duplication inside the loop? Am I right in assuming that I don't need a check after making the tortoise take a step forward? As I see it, the tortoise can never reach the end of the list before the hare (contrary to the fable). Any other ways to simplify/beautify this code?

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  • PeopleSoft CRM 9.2 Release Value Proposition

    - by Race Bannon
    Oracle's PeopleSoft Customer Relationship Management (CRM) delivers solutions that have been tailored to fit your industry business processes, your customer strategies, and your success criteria. With PeopleSoft CRM 9.2, organizations will be able to deploy a solution that delivers built-in best practices specific to your industry with a highly configurable, tightly integrated platform, ensuring that solutions will be fast to implement. The result is less configuration, less customization, and less integration. PeopleSoft Customer Relationship Management (CRM) is a world-class solution for organizations of every size and Oracle’s planned product roadmap for PeopleSoft applications is to deliver valuable, needed features for all of an organization’s constituents along three design principles — Simplicity, Productivity, and Lowered Total Cost of Ownership — as well as new application functionality as prioritized by our customers. The upcoming 9.2 release of PeopleSoft Customer Relationship Management focuses on these themes of Simplicity, Productivity, and Lower Total Cost of Ownership while also delivering robust new functionality to help your organization succeed. The recently published PeopleSoft CRM 9.2 Release Value Proposition provides overviews of the new features and enhancements planned for these applications for Release 9.2. This document offers customers a road map intended to help them assess the business benefits of upgrading to the 9.2 release while also helping them plan their IT projects and investments. (Link is to a My Oracle Support page, available to customers and partners.) Oracle continues to deliver enterprise-wide features that enhance our customer ownership experience and helps them run their businesses more efficiently and profitably. With the CRM 9.2 release, we continue to abide by this firm commitment we’ve made to our customers.

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  • Flood fill algorithm for Game of Go

    - by Jackson Borghi
    I'm having a hell of a time trying to figure out how to make captured stones disappear. I've read everywhere that I should use the flood fill algorithm, but I haven't had any luck with that so far. Any help would be amazing! Here is my code: package Go; import static java.lang.Math.*; import static stdlib.StdDraw.*; import java.awt.Color; public class Go2 { public static Color opposite(Color player) { if (player == WHITE) { return BLACK; } return WHITE; } public static void drawGame(Color[][] board) { Color[][][] unit = new Color[400][19][19]; for (int h = 0; h < 400; h++) { for (int x = 0; x < 19; x++) { for (int y = 0; y < 19; y++) { unit[h][x][y] = YELLOW; } } } setXscale(0, 19); setYscale(0, 19); clear(YELLOW); setPenColor(BLACK); line(0, 0, 0, 19); line(19, 19, 19, 0); line(0, 19, 19, 19); line(0, 0, 19, 0); for (double i = 0; i < 19; i++) { line(0.0, i, 19, i); line(i, 0.0, i, 19); } for (int x = 0; x < 19; x++) { for (int y = 0; y < 19; y++) { if (board[x][y] != YELLOW) { setPenColor(board[x][y]); filledCircle(x, y, 0.47); setPenColor(GRAY); circle(x, y, 0.47); } } } int h = 0; } public static void main(String[] args) { int px; int py; Color[][] temp = new Color[19][19]; Color[][] board = new Color[19][19]; Color player = WHITE; for (int i = 0; i < 19; i++) { for (int h = 0; h < 19; h++) { board[i][h] = YELLOW; temp[i][h] = YELLOW; } } while (true) { drawGame(board); while (!mousePressed()) { } px = (int) round(mouseX()); py = (int) round(mouseY()); board[px][py] = player; while (mousePressed()) { } floodFill(px, py, player, board, temp); System.out.print("XXXXX = "+ temp[px][py]); if (checkTemp(temp, board, px, py)) { for (int x = 0; x < 19; x++) { for (int y = 0; y < 19; y++) { if (temp[x][y] == GRAY) { board[x][y] = YELLOW; } } } } player = opposite(player); } } private static boolean checkTemp(Color[][] temp, Color[][] board, int x, int y) { if (x < 19 && x > -1 && y < 19 && y > -1) { if (temp[x + 1][y] == YELLOW || temp[x - 1][y] == YELLOW || temp[x][y - 1] == YELLOW || temp[x][y + 1] == YELLOW) { return false; } } if (x == 18) { if (temp[x - 1][y] == YELLOW || temp[x][y - 1] == YELLOW || temp[x][y + 1] == YELLOW) { return false; } } if (y == 18) { if (temp[x + 1][y] == YELLOW || temp[x - 1][y] == YELLOW || temp[x][y - 1] == YELLOW) { return false; } } if (y == 0) { if (temp[x + 1][y] == YELLOW || temp[x - 1][y] == YELLOW || temp[x][y + 1] == YELLOW) { return false; } } if (x == 0) { if (temp[x + 1][y] == YELLOW || temp[x][y - 1] == YELLOW || temp[x][y + 1] == YELLOW) { return false; } } else { if (x < 19) { if (temp[x + 1][y] == GRAY) { checkTemp(temp, board, x + 1, y); } } if (x >= 0) { if (temp[x - 1][y] == GRAY) { checkTemp(temp, board, x - 1, y); } } if (y < 19) { if (temp[x][y + 1] == GRAY) { checkTemp(temp, board, x, y + 1); } } if (y >= 0) { if (temp[x][y - 1] == GRAY) { checkTemp(temp, board, x, y - 1); } } } return true; } private static void floodFill(int x, int y, Color player, Color[][] board, Color[][] temp) { if (board[x][y] != player) { return; } else { temp[x][y] = GRAY; System.out.println("x = " + x + " y = " + y); if (x < 19) { floodFill(x + 1, y, player, board, temp); } if (x >= 0) { floodFill(x - 1, y, player, board, temp); } if (y < 19) { floodFill(x, y + 1, player, board, temp); } if (y >= 0) { floodFill(x, y - 1, player, board, temp); } } } }

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  • FloodFill Algorithm for Game of Go

    - by Jackson Borghi
    I'm having a hell of a time trying to figure out how to make captured stones disappear. I've read everywhere that I should use the FloodFill algorithm, but I havent had any luck with that so far. Any help would be amazing! Here is my code: package Go; import static java.lang.Math.; import static stdlib.StdDraw.; import java.awt.Color; public class Go2 { public static Color opposite(Color player) { if (player == WHITE) { return BLACK; } return WHITE; } public static void drawGame(Color[][] board) { Color[][][] unit = new Color[400][19][19]; for (int h = 0; h < 400; h++) { for (int x = 0; x < 19; x++) { for (int y = 0; y < 19; y++) { unit[h][x][y] = YELLOW; } } } setXscale(0, 19); setYscale(0, 19); clear(YELLOW); setPenColor(BLACK); line(0, 0, 0, 19); line(19, 19, 19, 0); line(0, 19, 19, 19); line(0, 0, 19, 0); for (double i = 0; i < 19; i++) { line(0.0, i, 19, i); line(i, 0.0, i, 19); } for (int x = 0; x < 19; x++) { for (int y = 0; y < 19; y++) { if (board[x][y] != YELLOW) { setPenColor(board[x][y]); filledCircle(x, y, 0.47); setPenColor(GRAY); circle(x, y, 0.47); } } } int h = 0; } public static void main(String[] args) { int px; int py; Color[][] temp = new Color[19][19]; Color[][] board = new Color[19][19]; Color player = WHITE; for (int i = 0; i < 19; i++) { for (int h = 0; h < 19; h++) { board[i][h] = YELLOW; temp[i][h] = YELLOW; } } while (true) { drawGame(board); while (!mousePressed()) { } px = (int) round(mouseX()); py = (int) round(mouseY()); board[px][py] = player; while (mousePressed()) { } floodFill(px, py, player, board, temp); System.out.print("XXXXX = "+ temp[px][py]); if (checkTemp(temp, board, px, py)) { for (int x = 0; x < 19; x++) { for (int y = 0; y < 19; y++) { if (temp[x][y] == GRAY) { board[x][y] = YELLOW; } } } } player = opposite(player); } } private static boolean checkTemp(Color[][] temp, Color[][] board, int x, int y) { if (x < 19 && x > -1 && y < 19 && y > -1) { if (temp[x + 1][y] == YELLOW || temp[x - 1][y] == YELLOW || temp[x][y - 1] == YELLOW || temp[x][y + 1] == YELLOW) { return false; } } if (x == 18) { if (temp[x - 1][y] == YELLOW || temp[x][y - 1] == YELLOW || temp[x][y + 1] == YELLOW) { return false; } } if (y == 18) { if (temp[x + 1][y] == YELLOW || temp[x - 1][y] == YELLOW || temp[x][y - 1] == YELLOW) { return false; } } if (y == 0) { if (temp[x + 1][y] == YELLOW || temp[x - 1][y] == YELLOW || temp[x][y + 1] == YELLOW) { return false; } } if (x == 0) { if (temp[x + 1][y] == YELLOW || temp[x][y - 1] == YELLOW || temp[x][y + 1] == YELLOW) { return false; } } else { if (x < 19) { if (temp[x + 1][y] == GRAY) { checkTemp(temp, board, x + 1, y); } } if (x >= 0) { if (temp[x - 1][y] == GRAY) { checkTemp(temp, board, x - 1, y); } } if (y < 19) { if (temp[x][y + 1] == GRAY) { checkTemp(temp, board, x, y + 1); } } if (y >= 0) { if (temp[x][y - 1] == GRAY) { checkTemp(temp, board, x, y - 1); } } } return true; } private static void floodFill(int x, int y, Color player, Color[][] board, Color[][] temp) { if (board[x][y] != player) { return; } else { temp[x][y] = GRAY; System.out.println("x = " + x + " y = " + y); if (x < 19) { floodFill(x + 1, y, player, board, temp); } if (x >= 0) { floodFill(x - 1, y, player, board, temp); } if (y < 19) { floodFill(x, y + 1, player, board, temp); } if (y >= 0) { floodFill(x, y - 1, player, board, temp); } } } }

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  • word wrap in tcpdf

    - by ChuckO
    I'm using tcpdf to creat a pdf version of the html table below. How do I word wrap the text in the cells? <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <style type="text/css"> table.frm { width: 960px; Height:400px; margin-left: auto; margin-right: auto; border-width: 0px 0px 0px 0px; border-spacing: 0px; border-style: solid solid solid solid; border-color: gray gray gray gray; border-collapse: collapse; background-color: white; font-family: Verdana,Arial,Helvetica,sans-serif; font-size: 11px; } table.frm th { Width: 120px; border-width: 1px 1px 1px 1px; padding: 1px 1px 1px 1px; border-style: solid solid solid solid; border-collapse: collapse; border-color: gray gray gray gray; background-color: white; } table.frm td { width: 120px; height: 80px; vertical-align: top; border-width: 1px 1px 1px 1px; padding: 2px 2px 2px 2px; border-style: solid solid solid solid; border-collapse: collapse; border-color: gray gray gray gray; background-color: white; } </style> <title>Weekly Menu</title> </head> <body> <table class="frm"> <tr> <th align="center" colspan="8"><b>WEEKLY MENU</b></th> </tr> <tr> <th align="center" colspan="8"><b>Your Name Here</b></th> </tr> <tr> <th></th> <th>Monday</th> <th>Tuesday</th> <th>Wednesday</th> <th>Thursday</th> <th>Friday</th> <th>Saturday</th> <th>Sunday</th> </tr> <tr> <td><b>Breakfast</b></td> <td>Scrambled Eggs Black Coffee</td> <td>Vegetable Omelet Black Coffee</td> <td>2 slices Toast Black Coffee</td> <td>Cereal w/milk Black Coffee</td> <td>Orange Juice Black Coffee</td> <td>Cereal w/milk Black Coffee</td> <td>Pancakes w/syrup Black Coffee</td> </tr> <tr> <td><b>Lunch</b></td> <td>Tuna Salad Sandwich Diet Coke</td> <td>Greek Salad Black Coffee</td> <td></td> <td>Amer Cheese Sandwich Orange Juice</td> <td></td> <td></td> <td></td> </tr> <tr> <td><b>Dinner</b></td> <td>Burger Fried Onions Diet Coke</td> <td>Steak Fries Diet Sprite</td> <td></td> <td>Chicken Cutlet Baked Potato Peas</td> <td></td> <td></td> <td></td> </tr> <tr> <td><b>Snack</b></td> <td>Apple</td> <td>Orange</td> <td>Sm bag of chips</td> <td>Celery Sticks</td> <td></td> <td></td> <td></td> </tr> </table> </body> </html> This is the tcpdf code: $pdf = new TCPDF('Landscape', 'mm', '', true, 'UTF-8', false); $pdf->SetTitle('Weekly Menu'); $pdf->SetMargins(15, 7.5, 12.5); $pdf->SetAutoPageBreak(TRUE, PDF_MARGIN_BOTTOM); $pdf->SetPrintHeader(false); $pdf->SetPrintFooter(false); $pdf->AddPage(); $pdf->setFormDefaultProp(array('lineWidth'=>0, 'borderStyle'=>'dot', 'fillColor'=>array(235, 235, 255), 'strokeColor'=>array(255,255,250))); $pdf->SetFont('times', 'BU', 12); $pdf->cell(250, 8, 'Weekly Menu', 0, 1, 'C'); $pdf->cell(250, 8, $yourname, 0, 1, 'C'); $pdf->SetFont('times', '', 10); $cw=35; $ch=25; $pdf->SetXY(15,50); $pdf->cell(25,5,'',1,0,'L'); $pdf->cell($cw,5,$day1,1,0,'C'); $pdf->cell($cw,5,$day2,1,0,'C'); $pdf->cell($cw,5,$day3,1,0,'C'); $pdf->cell($cw,5,$day4,1,0,'C'); $pdf->cell($cw,5,$day5,1,0,'C'); $pdf->cell($cw,5,$day6,1,0,'C'); $pdf->cell($cw,5,$day7,1,1,'C'); $pdf->cell(25,$ch,'Breakfast',1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[0]->breakfast,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[1]->breakfast,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[2]->breakfast,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[3]->breakfast,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[4]->breakfast,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[5]->breakfast,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[6]->breakfast,1,1,'L',0,0,false,'','T'); $pdf->cell(25,$ch,'Lunch',1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[0]->lunch,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[1]->lunch,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[2]->lunch,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[3]->lunch,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[4]->lunch,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[5]->lunch,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[6]->lunch,1,1,'L',0,0,false,'','T'); $pdf->cell(25,$ch,'Dinner',1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[0]->dinner,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[1]->dinner,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[2]->dinner,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[3]->dinner,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[4]->dinner,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[5]->dinner,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[6]->dinner,1,1,'L',0,0,false,'','T'); $pdf->cell(25,$ch,'Snack',1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[0]->snack,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[1]->snack,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[2]->snack,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[3]->snack,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[4]->snack,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[5]->snack,1,0,'L',0,0,false,'','T'); $pdf->cell($cw,$ch,$record[6]->snack,1,1,'L',0,0,false,'','T'); EOD;

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  • Setting Background of a Jbutton

    - by mithun1538
    Hello there, I have 5 JButtons: b1, b2, b3, b4, b5. By default, their color is gray. When I click on any button, the background of that button changes to white. When I click another button, I want that previous clicked button to change its background to gray, and this newly clicked button to change its background to white. Here is the code that I wrote: int liveButton = 0; //holds the value of the button that is last clicked. //0 indicates no button clicked (in the beginning) private void ChangeInUsersList(int clickedButton) { switch(liveButton) { case 1 : b1.setBackground(Color.GRAY); break; case 2 : b2.setBackground(Color.GRAY); break; case 3 : b3.setBackground(Color.GRAY); break; case 4 : b4.setBackground(Color.GRAY); break; case 5 : b5.setBackground(Color.GRAY); break; default: System.out.println("No button to change"); } liveButton = clickedButton;// store the clicked button to change its //background later } private void b1ActionPerformed(java.awt.event.ActionEvent evt) { ChangeInUsersList(1); b1.setBackground(new java.awt.Color(255,255,255)); } private void b2ActionPerformed(java.awt.event.ActionEvent evt) { ChangeInUsersList(2); b2.setBackground(new java.awt.Color(255,255,255)); } private void b3ActionPerformed(java.awt.event.ActionEvent evt) { ChangeInUsersList(3); b3.setBackground(new java.awt.Color(255,255,255)); } private void b4ActionPerformed(java.awt.event.ActionEvent evt) { ChangeInUsersList(4); b4.setBackground(new java.awt.Color(255,255,255)); } private void b5ButtonActionPerformed(java.awt.event.ActionEvent evt) { ChangeInUsersList(5); b5.setBackground(new java.awt.Color(255,255,255)); } However, its not working as expected. When i click on a button, its background does change to white. However, if i click on some other button after that, the former button's background doesnt change to grey. I tried replacing Color.GREY with new java.awt.Color(236,233,216) - the rgb for grey but it still doesnt work.

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  • Canon MX870 printer only shows "Processing" on the status LCD

    - by Nick
    I had my Canon MX870 installed perfectly fine in 11.10, but since upgrading to 12.04, it no longer works. The printer is recognized in print settings and when I attempt to print a test page, the printer LCD displays a "Processing" message, but then it disappears and nothing happens. Here are my logs (note that printing did not succeed despite the access logs showing success): # /var/log/cups/access_log localhost - - [22/May/2012:12:29:35 -0400] "POST /printers/Canon-MX870 HTTP/1.1" 200 412 Print-Job successful-ok - # /var/log/cups/error_log W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-Gray..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-RGB..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateDevice: org.freedesktop.ColorManager.AlreadyExists:device id 'cups-Canon-MX870' already exists W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-Gray..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-RGB..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateDevice: org.freedesktop.ColorManager.AlreadyExists:device id 'cups-Canon-MX870' already exists W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-Gray..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-RGB..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateDevice: org.freedesktop.ColorManager.AlreadyExists:device id 'cups-Canon-MX870' already exists W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-Gray..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-RGB..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateDevice: org.freedesktop.ColorManager.AlreadyExists:device id 'cups-Canon-MX870' already exists

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  • SQL Query to update parent record with child record values

    - by Wells
    I need to create a Trigger that fires when a child record (Codes) is added, updated or deleted. The Trigger stuffs a string of comma separated Code values from all child records (Codes) into a single field in the parent record (Projects) of the added, updated or deleted child record. I am stuck on writing a correct query to retrieve the Code values from just those child records that are the children of a single parent record. -- Create the test tables CREATE TABLE projects ( ProjectId varchar(16) PRIMARY KEY, ProjectName varchar(100), Codestring nvarchar(100) ) GO CREATE TABLE prcodes ( CodeId varchar(16) PRIMARY KEY, Code varchar (4), ProjectId varchar(16) ) GO -- Add sample data to tables: Two projects records, one with 3 child records, the other with 2. INSERT INTO projects (ProjectId, ProjectName) SELECT '101','Smith' UNION ALL SELECT '102','Jones' GO INSERT INTO prcodes (CodeId, Code, ProjectId) SELECT 'A1','Blue', '101' UNION ALL SELECT 'A2','Pink', '101' UNION ALL SELECT 'A3','Gray', '101' UNION ALL SELECT 'A4','Blue', '102' UNION ALL SELECT 'A5','Gray', '102' GO I am stuck on how to create a correct Update query. Can you help fix this query? -- Partially working, but stuffs all values, not just values from chile (prcodes) records of parent (projects) UPDATE proj SET proj.Codestring = (SELECT STUFF((SELECT ',' + prc.Code FROM projects proj INNER JOIN prcodes prc ON proj.ProjectId = prc.ProjectId ORDER BY 1 ASC FOR XML PATH('')),1, 1, '')) The result I get for the Codestring field in Projects is: ProjectId ProjectName Codestring 101 Smith Blue,Blue,Gray,Gray,Pink ... But the result I need for the Codestring field in Projects is: ProjectId ProjectName Codestring 101 Smith Blue,Pink,Gray ... Here is my start on the Trigger. The Update query, above, will be added to this Trigger. Can you help me complete the Trigger creation query? CREATE TRIGGER Update_Codestring ON prcodes AFTER INSERT, UPDATE, DELETE AS WITH CTE AS ( select ProjectId from inserted union select ProjectId from deleted )

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  • Windows store apps: ScrollViewer with dinamic content

    - by Alexandru Circus
    I have a scrollViewer with an ItemsControl (which holds rows with data) as content. The data from these rows is grabbed from the server so I want to display a ProgressRing with a text until the data arrives. Basically I want the content of the ScrollViewer to be a grid with progress ring and a text and after the data arrives the content to be changed with my ItemsControl. The problem is that the ScrollViewer does not accept more than 1 element as content. Please tell me how can I solve this problem. (I'm a C# beginner) <FlipView x:Name="OptionPagesFlipView" Grid.Row="1" TabNavigation="Cycle" SelectionChanged="OptionPagesFlipView_SelectionChanged" ItemsSource="{Binding OptionsPageItems}"> <FlipView.ItemTemplate> <DataTemplate x:Name="OptionMonthPageTemplate"> <ScrollViewer x:Name="OptionsScrollViewer" HorizontalScrollMode="Disabled" HorizontalAlignment="Stretch" VerticalScrollBarVisibility="Auto"> <ItemsControl x:Name="OptionItemsControl" ItemsSource="{Binding OptionItems, Mode=OneWay}" Visibility="Collapsed"> <ItemsControl.ItemTemplate> <DataTemplate x:Name="OptionsChainItemTemplate"> <Grid x:Name="OptionItemGrid" Background="#FF9DBDF7" HorizontalAlignment="Stretch"> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition Height="Auto"/> <RowDefinition Height="Auto"/> <RowDefinition Height="Auto"/> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="*" /> <ColumnDefinition Width="*" /> <ColumnDefinition Width="*" /> <ColumnDefinition Width="*" /> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> <!-- CALL BID --> <TextBlock Text="Bid" Foreground="Gray" HorizontalAlignment="Left" Grid.Row="0" Grid.Column="0" FontSize="18" Margin="5,0,5,0"/> <TextBlock x:Name="CallBidTextBlock" Text="{Binding CallBid}" Foreground="Blue" HorizontalAlignment="Left" Grid.Row="1" Grid.Column="0" Margin="5,0,5,5" FontSize="18"/> <!-- CALL ASK --> <TextBlock Text="Ask" Foreground="Gray" HorizontalAlignment="Left" Grid.Row="2" Grid.Column="0" FontSize="18" Margin="5,0,5,0"/> <TextBlock x:Name="CallAskTextBlock" Text="{Binding CallAsk}" Foreground="Blue" HorizontalAlignment="Left" Grid.Row="3" Grid.Column="0" Margin="5,0,5,0" FontSize="18"/> <!-- CALL LAST --> <TextBlock Text="Last" Foreground="Gray" HorizontalAlignment="Left" Grid.Row="0" Grid.Column="1" FontSize="18" Margin="5,0,5,0"/> <TextBlock x:Name="CallLastTextBlock" Text="{Binding CallLast}" Foreground="Blue" HorizontalAlignment="Left" Grid.Row="1" Grid.Column="1" Margin="5,0,5,5" FontSize="18"/> <!-- CALL NET CHANGE --> <TextBlock Text="Net Ch" Foreground="Gray" HorizontalAlignment="Left" Grid.Row="2" Grid.Column="1" FontSize="18" Margin="5,0,5,0"/> <TextBlock x:Name="CallNetChTextBlock" Text="{Binding CallNetChange}" Foreground="{Binding CallNetChangeForeground}" HorizontalAlignment="Left" Grid.Row="3" Grid.Column="1" Margin="5,0,5,5" FontSize="18"/> <!-- STRIKE --> <TextBlock Text="Strike" Foreground="Gray" HorizontalAlignment="Center" Grid.Row="1" Grid.Column="2" FontSize="18" Margin="5,0,5,0"/> <Border Background="{Binding StrikeBackground}" HorizontalAlignment="Center" Grid.Row="2" Grid.Column="2" Margin="5,0,5,5"> <TextBlock x:Name="StrikeTextBlock" Text="{Binding Strike}" Foreground="Blue" FontSize="18"/> </Border> <!-- PUT LAST --> <TextBlock Text="Last" Foreground="Gray" HorizontalAlignment="Right" Grid.Row="0" Grid.Column="3" FontSize="18" Margin="5,0,5,0"/> <TextBlock x:Name="PutLastTextBlock" Text="{Binding PutLast}" Foreground="Blue" HorizontalAlignment="Right" Grid.Row="1" Grid.Column="3" Margin="5,0,5,5" FontSize="18"/> <!-- PUT NET CHANGE --> <TextBlock Text="Net Ch" Foreground="Gray" HorizontalAlignment="Right" Grid.Row="2" Grid.Column="3" FontSize="18" Margin="5,0,5,0"/> <TextBlock x:Name="PutNetChangeTextBlock" Text="{Binding PutNetChange}" Foreground="{Binding PutNetChangeForeground}" HorizontalAlignment="Right" Grid.Row="3" Grid.Column="3" Margin="5,0,5,5" FontSize="18"/> <!-- PUT BID --> <TextBlock Text="Bid" Foreground="Gray" HorizontalAlignment="Right" Grid.Row="0" Grid.Column="4" FontSize="18" Margin="5,0,15,0"/> <TextBlock x:Name="PutBidTextBlock" Text="{Binding PutBid}" Foreground="Blue" HorizontalAlignment="Right" Grid.Row="1" Grid.Column="4" Margin="5,0,15,5" FontSize="18"/> <!-- PUT ASK --> <TextBlock Text="Ask" Foreground="Gray" HorizontalAlignment="Right" Grid.Row="2" Grid.Column="4" FontSize="18" Margin="5,0,15,0"/> <TextBlock x:Name="PutAskTextBlock" Text="{Binding PutAsk}" Foreground="Blue" HorizontalAlignment="Right" Grid.Row="3" Grid.Column="4" Margin="5,0,15,5" FontSize="18"/> <!-- BOTTOM LINE SEPARATOR--> <Rectangle Fill="Black" Height="1" Grid.ColumnSpan="5" VerticalAlignment="Bottom" Grid.Row="3"/> </Grid> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl> <!--<Grid> <Grid.RowDefinitions> <RowDefinition/> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <ProgressRing x:Name="CustomProgressRing" Height="40" Width="40" IsActive="true" Grid.Column="0" Margin="20" Foreground="White"/> <TextBlock x:Name="CustomTextBlock" Height="auto" Width="auto" FontSize="25" Grid.Column="1" Margin="20"/> <Border BorderBrush="#FFFFFF" BorderThickness="1" Grid.ColumnSpan="2"/> </Grid>--> </ScrollViewer> </DataTemplate> </FlipView.ItemTemplate>

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  • Compare images after canny edge detection in OpenCV (C++)

    - by typoknig
    Hi all, I am working on an OpenCV project and I need to compare some images after canny has been applied to both of them. Before the canny was applied I had the gray scale images populating a histogram and then I compared the histograms, but when canny is added to the images the histogram does not populate. I have read that a canny image can populate a histogram, but have not found a way to make it happen. I do not necessairly need to keep using the histograms, I just want to know the best way to compare two canny images. SSCCE below for you to chew on. I have poached and patched about 75% of this code from books and various sites on the internet, so props to those guys... // SLC (Histogram).cpp : Defines the entry point for the console application. #include "stdafx.h" #include <cxcore.h> #include <cv.h> #include <cvaux.h> #include <highgui.h> #include <stdio.h> #include <sstream> #include <iostream> using namespace std; IplImage* image1= 0; IplImage* imgHistogram1 = 0; IplImage* gray1= 0; CvHistogram* hist1; int main(){ CvCapture* capture = cvCaptureFromCAM(0); if(!cvQueryFrame(capture)){ cout<<"Video capture failed, please check the camera."<<endl; } else{ cout<<"Video camera capture successful!"<<endl; }; CvSize sz = cvGetSize(cvQueryFrame(capture)); IplImage* image = cvCreateImage(sz, 8, 3); IplImage* imgHistogram = 0; IplImage* gray = 0; CvHistogram* hist; cvNamedWindow("Image Source",1); cvNamedWindow("gray", 1); cvNamedWindow("Histogram",1); cvNamedWindow("BG", 1); cvNamedWindow("FG", 1); cvNamedWindow("Canny",1); cvNamedWindow("Canny1", 1); image1 = cvLoadImage("image bin/use this image.jpg");// an image has to load here or the program will not run //size of the histogram -1D histogram int bins1 = 256; int hsize1[] = {bins1}; //max and min value of the histogram float max_value1 = 0, min_value1 = 0; //value and normalized value float value1; int normalized1; //ranges - grayscale 0 to 256 float xranges1[] = { 0, 256 }; float* ranges1[] = { xranges1 }; //create an 8 bit single channel image to hold a //grayscale version of the original picture gray1 = cvCreateImage( cvGetSize(image1), 8, 1 ); cvCvtColor( image1, gray1, CV_BGR2GRAY ); IplImage* canny1 = cvCreateImage(cvGetSize(gray1), 8, 1 ); cvCanny( gray1, canny1, 55, 175, 3 ); //Create 3 windows to show the results cvNamedWindow("original1",1); cvNamedWindow("gray1",1); cvNamedWindow("histogram1",1); //planes to obtain the histogram, in this case just one IplImage* planes1[] = { canny1 }; //get the histogram and some info about it hist1 = cvCreateHist( 1, hsize1, CV_HIST_ARRAY, ranges1,1); cvCalcHist( planes1, hist1, 0, NULL); cvGetMinMaxHistValue( hist1, &min_value1, &max_value1); printf("min: %f, max: %f\n", min_value1, max_value1); //create an 8 bits single channel image to hold the histogram //paint it white imgHistogram1 = cvCreateImage(cvSize(bins1, 50),8,1); cvRectangle(imgHistogram1, cvPoint(0,0), cvPoint(256,50), CV_RGB(255,255,255),-1); //draw the histogram :P for(int i=0; i < bins1; i++){ value1 = cvQueryHistValue_1D( hist1, i); normalized1 = cvRound(value1*50/max_value1); cvLine(imgHistogram1,cvPoint(i,50), cvPoint(i,50-normalized1), CV_RGB(0,0,0)); } //show the image results cvShowImage( "original1", image1 ); cvShowImage( "gray1", gray1 ); cvShowImage( "histogram1", imgHistogram1 ); cvShowImage( "Canny1", canny1); CvBGStatModel* bg_model = cvCreateFGDStatModel( image ); for(;;){ image = cvQueryFrame(capture); cvUpdateBGStatModel( image, bg_model ); //Size of the histogram -1D histogram int bins = 256; int hsize[] = {bins}; //Max and min value of the histogram float max_value = 0, min_value = 0; //Value and normalized value float value; int normalized; //Ranges - grayscale 0 to 256 float xranges[] = {0, 256}; float* ranges[] = {xranges}; //Create an 8 bit single channel image to hold a grayscale version of the original picture gray = cvCreateImage(cvGetSize(image), 8, 1); cvCvtColor(image, gray, CV_BGR2GRAY); IplImage* canny = cvCreateImage(cvGetSize(gray), 8, 1 ); cvCanny( gray, canny, 55, 175, 3 );//55, 175, 3 with direct light //Planes to obtain the histogram, in this case just one IplImage* planes[] = {canny}; //Get the histogram and some info about it hist = cvCreateHist(1, hsize, CV_HIST_ARRAY, ranges,1); cvCalcHist(planes, hist, 0, NULL); cvGetMinMaxHistValue(hist, &min_value, &max_value); //printf("Minimum Histogram Value: %f, Maximum Histogram Value: %f\n", min_value, max_value); //Create an 8 bits single channel image to hold the histogram and paint it white imgHistogram = cvCreateImage(cvSize(bins, 50),8,3); cvRectangle(imgHistogram, cvPoint(0,0), cvPoint(256,50), CV_RGB(255,255,255),-1); //Draw the histogram for(int i=0; i < bins; i++){ value = cvQueryHistValue_1D(hist, i); normalized = cvRound(value*50/max_value); cvLine(imgHistogram,cvPoint(i,50), cvPoint(i,50-normalized), CV_RGB(0,0,0)); } double correlation = cvCompareHist (hist1, hist, CV_COMP_CORREL); double chisquare = cvCompareHist (hist1, hist, CV_COMP_CHISQR); double intersection = cvCompareHist (hist1, hist, CV_COMP_INTERSECT); double bhattacharyya = cvCompareHist (hist1, hist, CV_COMP_BHATTACHARYYA); double difference = (1 - correlation) + chisquare + (1 - intersection) + bhattacharyya; printf("correlation: %f\n", correlation); printf("chi-square: %f\n", chisquare); printf("intersection: %f\n", intersection); printf("bhattacharyya: %f\n", bhattacharyya); printf("difference: %f\n", difference); cvShowImage("Image Source", image); cvShowImage("gray", gray); cvShowImage("Histogram", imgHistogram); cvShowImage( "Canny", canny); cvShowImage("BG", bg_model->background); cvShowImage("FG", bg_model->foreground); //Page 19 paragraph 3 of "Learning OpenCV" tells us why we DO NOT use "cvReleaseImage(&image)" in this section cvReleaseImage(&imgHistogram); cvReleaseImage(&gray); cvReleaseHist(&hist); cvReleaseImage(&canny); char c = cvWaitKey(10); //if ASCII key 27 (esc) is pressed then loop breaks if(c==27) break; } cvReleaseBGStatModel( &bg_model ); cvReleaseImage(&image); cvReleaseCapture(&capture); cvDestroyAllWindows(); }

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  • nVelocity - Template issue when attempting 'greater than' comparison on decimal property

    - by Bart
    I have a simple object that has as one of it's properties a decimal named Amount. When I attempt a comparison on this property as part of an nVelocity template, the comparison always fails. If I change the property to be of type int the comparison works fine. Is there anything extra I need to add to the template for the comparison to work? Below is a sample from the aforementioned template: #foreach( $bet in $bets ) <li> $bet.Date $bet.Race #if($bet.Amount > 10) <strong>$bet.Amount.ToString("c")</strong> #else $bet.Amount.ToString("c") #end </li> #end Below is the Bet class: public class Bet { public Bet(decimal amount, string race, DateTime date) { Amount = amount; Race = race; Date = date; } public decimal Amount { get; set; } public string Race { get; set; } public DateTime Date { get; set; } } Any help would be greatly appreciated.

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  • Friday Fun: Play 3D Rally Racing in Google Chrome

    - by Asian Angel
    Are you a racing fan in need of a short (or long) break from work? Then get ready to enjoy a mid-day speed boost with the 3D Rally Racing extension for Google Chrome. 3D Rally Racing in Action This is the opening screen for 3D Rally Racing. You can start game play, view current best times, and read through the instructions from here. The first thing that you should do is have a quick look at the instructions to help you get set up and started. Click on “Play” to start the process. Before you can go further you will need to choose a “User Name”. Once you have done that click “Select Track”… Note: The extension will retain your name for later use even if you close your browser. When you first start out you will only have access to two tracks…the others require reaching a certain score/level to unlock them. Once you select a track you will be taken to the next screen. After you have selected a track you will need to choose your car and car color. All that is left to do afterwards is click on “Go Race”. Note: You will be competing against three other vehicles in the race. Here is a look at the “Desert Race Track”… And a look at the “Snow Race Track”. This game moves quickly and it is easy to fall behind if you are not careful! You can have a lot of fun playing this game while you are waiting for the day to end. Conclusion If you love racing games and want a fun way to waste the rest of afternoon at work, then you should definitely give 3D Rally Racing a try. Links Download the 3d Rally Racing extension (Google Chrome Extensions) Similar Articles Productive Geek Tips Friday Fun: Uphill RushFriday Fun: Racing Fun with SuperTuxKart RacerHow to Make Google Chrome Your Default BrowserEnable Vista Black Style Theme for Google Chrome in XPIncrease Google Chrome’s Omnibox Popup Suggestion Count With an Undocumented Switch TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Enable Check Box Selection in Windows 7 OnlineOCR – Free OCR Service Betting on the Blind Side, a Vanity Fair article 30 Minimal Logo Designs that Say More with Less LEGO Digital Designer – Free Create a Personal Website Quickly using Flavors.me

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  • Friday Fun: Play 3D Rally Racing in Google Chrome

    - by Asian Angel
    Are you a racing fan in need of a short (or long) break from work? Then get ready to enjoy a mid-day speed boost with the 3D Rally Racing extension for Google Chrome. 3D Rally Racing in Action This is the opening screen for 3D Rally Racing. You can start game play, view current best times, and read through the instructions from here. The first thing that you should do is have a quick look at the instructions to help you get set up and started. Click on “Play” to start the process. Before you can go further you will need to choose a “User Name”. Once you have done that click “Select Track”… Note: The extension will retain your name for later use even if you close your browser. When you first start out you will only have access to two tracks…the others require reaching a certain score/level to unlock them. Once you select a track you will be taken to the next screen. After you have selected a track you will need to choose your car and car color. All that is left to do afterwards is click on “Go Race”. Note: You will be competing against three other vehicles in the race. Here is a look at the “Desert Race Track”… And a look at the “Snow Race Track”. This game moves quickly and it is easy to fall behind if you are not careful! You can have a lot of fun playing this game while you are waiting for the day to end. Conclusion If you love racing games and want a fun way to waste the rest of afternoon at work, then you should definitely give 3D Rally Racing a try. Links Download the 3d Rally Racing extension (Google Chrome Extensions) Similar Articles Productive Geek Tips Friday Fun: Uphill RushFriday Fun: Racing Fun with SuperTuxKart RacerHow to Make Google Chrome Your Default BrowserEnable Vista Black Style Theme for Google Chrome in XPIncrease Google Chrome’s Omnibox Popup Suggestion Count With an Undocumented Switch TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Enable Check Box Selection in Windows 7 OnlineOCR – Free OCR Service Betting on the Blind Side, a Vanity Fair article 30 Minimal Logo Designs that Say More with Less LEGO Digital Designer – Free Create a Personal Website Quickly using Flavors.me

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  • Is a 1:* write:read thread system safe?

    - by Di-0xide
    Theoretically, thread-safe code should fix race conditions. Race conditions, as I understand it, occur because two threads attempt to write to the same location at the same time. However, what about a threading model in which a single thread is designed to write to a location, and several slave/worker threads simply read from the location? Assuming the value/timing at which they read the data isn't relevant/doesn't hinder the worker thread's outcome, wouldn't this be considered 'thread safe', or am I missing something in my logic?

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  • How can artificially create a slow query in mysql?

    - by Gray Race
    I'm giving a hands on presentation in a couple weeks. Part of this demo is for basic mysql trouble shooting including use of the slow query log. I've generated a database and installed our app but its a clean database and therefore difficult to generate enough problems. I've tried the following to get queries in the slow query log: Set slow query time to 1 second. Deleted multiple indexes. Stressed the system: stress --cpu 100 --io 100 --vm 2 --vm-bytes 128M --timeout 1m Scripted some basic webpage calls using wget. None of this has generated slow queries. Is there another way of artificially stressing the database to generate problems? I don't have enough skills to write a complex Jmeter or other load generator. I'm hoping perhaps for something built into mysql or another linux trick beyond stress.

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