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• Are there any free openCV classifier libraries?

  - by Khorkrak

  Been tinkering with openCV in python. The face detection demo is impressive. Are there any free collection of Haar classifiers aside from the face, eyes and full body ones?

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• Method for combining tiled squares defined as points into vectors

  - by mars

  If I tile squares, and the squares can be defined by their coordinates, how can I simplify shapes made of multiple squares into vectors that define each edge of the entire shape? Pseudo-code or general terms are fine.

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• Integrating C++ libraries in C for ARToolKit - ARToolkit+

  - by Mayank

  I am working on a Augmented reality Project where I plan to use ARToolkit for Image Capturing and rendering where as ARToolKitPlus for marker detection. The problem is ARToolKit is a C library where as ARToolKit+ is written in C++. Can some one please sugegst me a way to integrate them both. ARToolKit Library ARToolkitPlus

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• how do I redirect from a subdirectory to another directory, but strip off the original subdirectory

  - by Eric Cope

  I have a Ruby on Rails app running on 12001. I am currently redirecting a subdomain to 127.0.0.1:12001 using some ReWriteCond detection. Now I want to redirect my subdirectory to that rails app. http[s]://domain.com/redmine to 127.0.0.1:12001 The current rules apply REQUEST_URI to the above rails path, but I need to strip "/redmine" from the front of REQUEST_URI... Any ideas?

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• how to detect internet idle time?

  - by omair iqbal

  how do i detect internet idle time(time since i used internet) using delphi something like: begin { idle time detection code goes here} showmessage('you have not browsed any websites or downloaded/uploaded for over xyz seconds'); end; thanks in advance

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• Swing verify code on event dispatch thread at runtime

  - by Jeff Storey

  Are there any libraries that instrument code to verify that methods called on swing components are called on the event dispatch thread? It probably wouldn't be too difficult to write some basic code for doing this, but I'm sure there are edge cases and whatnot that other people have handled. I'm looking for this at runtime though, not for unit tests. thanks, Jeff

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• How would you add a lot of images to an UIview?

  - by MetaImi

  Hy I have to put a lot of images (100) to a UIView, with touch detection. If I use UIImageViewController I have ran out of memory. I've tried to draw the images manually, but in that case I can't detect wich image has been pushed. So how would you do this?

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• JavaScript/JQuery: $(window).resize how to fire AFTER the resize is completed?

  - by sarah

  I'm using JQuery as such: $(window).resize(function() { ... }); However, it appears that if the person manually resizes their browser windows by dragging the window edge to make it larger/smaller, the .resize event above fires multiple times. Question: How to I call a function AFTER the browser window resize completed (so that the event only fires once)?

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• How to mask part of an image in matlab ?

  - by ZaZu

  Hey guys, I would like to know how to mask part of an image that is in BLACK & WHITE ? I got an object that needs to be edge detected, but I have other white interfering objects in the background that are below the target objet ... I would like to mask the entire lower part of an image to black, how can I do that ? Thanks !!

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• What should I do during the summer?

  - by zamN

  I have just recently graduated from High School and I am looking for something productive to do over the summer. I was thinking of possibly learning a new language that can give me an edge in school or a good project to pursue that will look good on my resume for future jobs. Also how would I go about getting a job right out of high school or interning for a company for the summer? Thanks in advance.

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• Drawing on a CartesianDataCanvas - Any way to draw an ellipse that is partially off the chart?

  - by Joe Arasin

  I'm attempting to draw a background to a chart. If I try to call canvas.beginFill(0xff0000,1) canvas.drawEllipse(10,200,300,-30); canvas.endFill() And -30 is outside the range of the chart, it won't draw anything. I want it to draw an ellipse that is cut off by the edge of the chart.

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• How to crop scanned image using C#?

  - by ieaglle

  I have a scanned image of a book page and i need to crop this scan for leaving only page area. I tried to use AForge to detect page borders, but it doesn't work because the space which i need to crop may consist of little "light" areas (due to scanner quality) and edge detector detects borders there. That's why this is bad idea as for me. Could you recommend something? P.S. Please don't tell me to use non-free libraries.

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• Algorithm to find 'maximal' independent set in a simple graph

  - by none

  Hi, in words, can someone post directions towards finding the 'maximal' independent set in a simple graph? I read up something from ETH site which said one can find such in O(n) by simply picking a random vertex v and than scanning the rest and attempting to find if there's an edge from v to the rest. Thanks

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• Masked Input Using EditText Widget in Android

  - by Buzzy

  Is there a way I can specify an input mask to the EditText control in Android? I want be able to specify something like ### - ## - #### for a Social Security Number. This will cause any invalid input to be rejected automatically (example, I type alphabetical characters instead of numeric digits). I realize that I can add an OnKeyListener and manually check for validity. But this is tedious and I will have to handle various edge cases. Buzzy

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• implementing proxy support in C, is there any library for that?

  - by Sabya

  Hi, I want to implement proxy support in my application. There are two parts that needs to be implemented: Detection of proxy details (protocol, host, port): I am using libproxy for that. Connecting to the the proxy server and telling it to relay the packets. Get the connected socket and then use it in your application. Is there library for the #2 part?

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• What is the best way to flag some elements in MATLAB? using NaN or Inf? or something else?

  - by Kamran Bigdely Shamloo

  As you may know, in many occasions, there is a need to flag some elements of a matrix. For example when we have weighted adjacency matrix, and our graph is not fully connected, we have to flag some elements to show that there is no edge between those nodes. The question is how to do that? Is it better to put NaN or Inf on that elements in the matrix? or something elese(such as -1)?

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• WebKit doesn't paint background-color for entire width of final inline list item

  - by Jay

  On our website http://www.dimagi.com, the items in the jQuery menu near the top of the screen gain a background-color on hover. The hover background-color of the rightmost list item ("About Us") is cut off at the very right edge of the text, seemingly only in WebKit (tested Safari and Chrome in Windows XP). Can anybody see what I might be doing wrong in the CSS? Or is this some obscure WebKit bug?

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• Javascript: Make Rows Draggable Through Input Field Handles

  - by Corey O.

  I have created a table with draggable rows. Unfortunately, most of the rows are covered with a large textbox input element. In order to drag the rows, you have to grab the row on the very edge just outside of the textbox. Is there a way to allow the rows to be grabbed through the textboxes without destroying the textbox functionality? (i.e. relay the mouse drag event, but not the mouseclick event?)

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• Setting the origin to center of the screen instead of the top left screen?(iPhone)

  - by thyrgle

  Hi, I am working on an iPhone app and I am trying to make something that has to do with line-circle collision detection. I am using the slope of the line and checking if the coordinates of a circle suffice the equation y = mx + b. But, with the current origin (0,0) at the top left it is a pain to get the slope. Any way I can convert the coordinates so the origin is in the center of the screen?

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• ASP.net canvas server control

  - by Pierreten

  I was wondering if anyone has come up with an ASP.net server tag for the HTML5 canvas? I was thinking of something where I could declaritively define paths, curves; etc in the aspx markup, and the control would deliver the js to do this (perhaps with support for browser detection, and delivery of an emulation script for IE browsers.) Maybe a good idea for a Codeplex project for me to start up?

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• Fluent Nhibernate and hbms

  - by Berryl

  As an FNH user, do you find you sometimes need to supplement FNH with an hbm file? Any relatively common edge cases where you do, if so? Cheers, Berryl

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• Connecting to internet thru my app

  - by Mr. Kakakuwa Bird

  Hi Is there any way to start the internet through Wifi/GPRS/EDGE/UMTS from application?? Thanks and Regards.

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• Google Maps Info Box - Can it exist outside the map container?

  - by DCD

  I've got a Google map, standard fare really. It's quite small though and the popup info windows on the markers are quite big, so my question is, is it possible for these popup windows to spill out the edge of the map and on to the actual website? (See dodgy photoshop job for an example). Thanks!

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• How to determine the transparency color of a bitmap

  - by Sky Sanders

  I know you can programmatically determine the tranparency color of a .gif Is there a way to do the same for a Bitmap? Right now, I am doing this heuristically by sampling around the outer edge but of course this is not 100% reliable.

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• What is the best epoll/kqueue/select equvalient on Windows?

  - by blackwing

  What is Windows' best I/O event notification facility? By best I mean something that ... doesn't have a limit on number of input file descriptors works on all file descriptors (disk files, sockets, ...) provides various notification modes (edge triggered, limit triggered)

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