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  • Geometric Shape Recognition & Find Extreme Points in C#

    - by Apoorv Shah
    Hi, Can anyone tell me how to recognize geometric shape using C#? I have geometric shapes like triangle, hexagon, pentagon, diamond, square,parallelogram, rectangle, etc. I have drawn all these shapes using mspaint. i have one picture box, using opendialog i am selecting any of the geometric shapes, into picturebox. I want to identify the shape of the image & extreme points. As it is hand made image, i want to draw a proper image using extreme points. If anyone has some code or some references, then please send it to me... I need it very very urgently. Thanks, Riya

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  • How to disable Excel's auto recognition of numbers and text

    - by Yin Zhu
    I used Python to generate a CSV file. But when I open it in Excel, Excel will auto recognize a string into a number if it could be converted. e.g.33E105, which is actually an ID, not a number. How to disable this in Excel while opening a CSV file? Or I need to resort to a excel-python library to output a excel file and specify the format myself? Thanks!

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  • Recognition source of event in PyQT

    - by xTrol
    Hi, I`m starting with PyQt4 and right now I have a problem with events. I have one main class let say MainWindow. MainWindow has a list of buttons of type ButtonX (inherence form QPushButton). I would like to achieve one of 2 solutions (depends which is easier). 1) After click one of the button from the list I would like to run a one method of MainWindow. I would like to be able to read a source of event there (recognize clicked button) 2) Second solution is to run a method defined in ButtonX class. What I tried is: QtCore.QObject.connect(self.getButton(0, 0), QtCore.SIGNAL("clicked()"), self.getButton(0, 0).buttonMethod()) QtCore.QObject.connect(self.getButton(0, 0), QtCore.SIGNAL("clicked()"), self.getButton(0, 0), QtCore.SLOT("incrementValue()")) and even this line occure suspend Python interpreter QtCore.QObject.connect(self.getButton(0, 0), QtCore.SIGNAL("clicked()"), self.getButton(0, 0), QtCore.SLOT("incrementValue"))

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  • Phone Number Recognition in Javascript

    - by samer
    Hi Guys, Is there a javascript library the can recognize phone numbers in a web page? Just like what skype did on their firefox plugin. Or do you know a way on how to do it? Websites or any tutorial that do the same would be very helpful. Your reply is greatly appreciated. Best,

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  • Camera and Image recognition

    - by kjh
    I recently watched a youtube video where a guy got a camera to recognize when a rubik's cube was held up to it, and it captured the 9 square color combination before snapping a picture of the cube and displaying the 3x3 grid on the screen of his computer. What kind of programming is this and where would I start reading to get into this sort of thing? specifically, controlling a camera, and getting it to pick out certain parts of an image and translate that data.

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  • String literal recognition problem

    - by helicera
    Hello! I'm trying to recognize string literal by reading string per symbol. Here is a sample code: #region [String Literal (")] case '"': // {string literal ""} { // skipping '"' ChCurrent = Line.ElementAtOrDefault<Char>(++ChPosition); while(ChCurrent != '"') { Value.Append(ChCurrent); ChCurrent = Line.ElementAtOrDefault<Char>(++ChPosition); if(ChCurrent == '"') { // "" sequence only acceptable if(Line.ElementAtOrDefault<Char>(ChPosition + 1) == '"') { Value.Append(ChCurrent); // skip 2nd double quote ChPosition++; // move position next ChCurrent = Line.ElementAtOrDefault<Char>(++ChPosition); } } else if(default(Char) == ChCurrent) { // message: unterminated string throw new ScanningException(); } } ChPosition++; break; } #endregion When I run test: [Test] [ExpectedException(typeof(ScanningException))] public void ScanDoubleQuotedStrings() { this.Scanner.Run(@"""Hello Language Design""", default(System.Int32)); this.Scanner.Run(@"""Is there any problems with the """"strings""""?""", default(System.Int32)); this.Scanner.Run(@"""v#:';?325;.<>,|+_)""(*&^%$#@![]{}\|-_=""", default(System.Int32)); while(0 != this.Scanner.TokensCount - 1) { Assert.AreEqual(Token.TokenClass.StringLiteral, this.Scanner.NextToken.Class); } } It passes with success.. while I'm expecting to have an exception according to unmatched " mark in this.Scanner.Run(@"""v#:';?325;.<>,|+_)""(*&^%$#@![]{}\|-_=""", default(System.Int32)); Can anyone explain where is my mistake or give an advice on algorithm.

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  • Object Recognition from Templates

    - by JonLeah
    Hi Guys, I was hoping someone could point me in the right direction here. With a picture of a die (from above) I want to recognize which side is up. I understand the basics in play here, but I'm having trouble grasping the power of OpenCV. I imagine I want a picture of each side of the die. Then I can somehow compare them all to the current image to be classified. How can I use OpenCV to do this? Thanks, Jonathan

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  • License plate recognition

    - by WowtaH
    As a side-project I'm trying to create an app that scans license plates from passing cars from my living-room window. I have hooked up a high resolution camera to my system to capture (moving) images into my c# app. Now all I need is a way to interpret these images into something readable. I´m thinking about some sort of OCR-solution that is fast/accurate enough for moving images. Hope you can give me some direction!

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  • How to change word recognition in vim spell?

    - by David
    I like that vim 7.0 supports spell checking via :set spell, and I like that it by default only checks comments and text strings in my C code. But I wanted to find a way to change the behavior so that vim will know that when I write words containing underscores, I don't want that word spell checked. The problem is that I often will refer to variable or function names in my comments, and so right now vim thinks that each piece of text that isn't a complete correct word is a spelling error. Eg. /* The variable proj_abc_ptr is used in function do_func_stuff' */ Most of the time, the pieces seperated by underscores are complete words, but other times they are abbreviations that I would prefer not to add to a word list. Is there any global way to tell vim to include _'s as part of the word when spell checking?

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  • Can someone explain how this IOS Pan Gesture Recognition works? [on hold]

    - by user79894
    It is ios app using Pan Gesture Recognizer It works great, but I didn't get it. I wanna do some changes if the dragged UIView reaches a specific position it would call another method. Any comments are appreciated. - (IBAction)handlePan1:(UIPanGestureRecognizer *)recognizer { CGPoint translation = [recognizer translationInView:self.view]; recognizer.view.center = CGPointMake(recognizer.view.center.x + translation.x, recognizer.view.center.y + translation.y); [recognizer setTranslation:CGPointMake(0, 0) inView:self.view]; /* [x1 setText:[NSString stringWithFormat: @"%.2f", recognizer.view.center.x]]; [y1 setText:[NSString stringWithFormat: @"%.2f", recognizer.view.center.y]]; [x2 setText:[NSString stringWithFormat: @"%.2f", translation.x]]; [y2 setText:[NSString stringWithFormat: @"%.2f", translation.y]];*/ }

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  • windows mobile 6.5 Gestures and DirectDraw

    - by ArjanW
    I'm trying to build a UI using directdraw in c#. For this im using a DirectDrawWrapper as sugested here. My initial tests setting up the screen work perfectly. But now i'd like to incorporate gesture recognition into the UI. So i instantiate a GestureRecognizer and tie it to the _form which also gets passed to the DirectDrawGraphics constructor, form = new Form(); _form.show(); _graphics = new DirectDrawGraphics(_form, CooperativeFlags.Fullscreen, BackbufferMode.Any); gestureRecognizer = new GestureRecognizer(); gestureRecognizer.TargetControl = _form; Pasting the whole DirectDrawWrapper code might be a bit to much, so let me try to formulate a question. I guess directdraw talks directly to the video memory, as it should. But then my form wont receive any messages, thus any eventhandlers i'v tied op to the GestureRecognizer wont be fired. How can i still receive any messages from the touchscreen?

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  • Is there a high-level gestures library for iPhone development?

    - by n8gray
    The iPhone platform has a number of common gesture idioms. For example, there are taps, pinches, and swipes, each with varying number of fingers. But when you're developing an app, it's up to you to implement these things based on low-level information about the number and locations of touches. It seems like this is a prime candidate for a library. You would register a delegate, set some parameters like multi-tap interval and swipe threshold, and get calls like swipeStarted/Ended, pinchStarted/Ended, multiTap, etc. Does such a library exist?

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  • Change the contents of a UITableView via a swipe?

    - by Mark
    Im currently using a UITableView like any other, and I am researching into the ability to perform a swipe gesture on the screen, which will then shift the contents of the visible table over to display new content for example: swiping right-to-left on the screen would change (via animation) the contents within each of the cells on screen to show new data. What I can do is detect a swipe on the cells, or perhaps on the UITableViewController, but what I dont know how to do two fold: 1) Change data in all cells (could you have a set of hidden views within a custom table cell that animate in and out of each cell per swipe?) 2) How can you do this to all cells? Thanks a lot Mark

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  • How to disable other touch gestures after adding another tap gesture to the view?

    - by Hudson Duan
    I have a view with some tables and buttons on it, and then I want to add a tap gesture to the entire view, but I only want that gesture recognizer to recognize taps. Ideally, I want to do something when the added gesture recognizer is tapped, then remove that gesture recognizer after so the other buttons and tables can be accessed. Basically a tap to dismiss functionality that replicates something like the facebook notifications window, tap outside to dismiss, but not interfere with the buttons outside of the notifications view. Can anybody help? My current code is: NotificationsWindow *customView = [[[NSBundle mainBundle]loadNibNamed:@"NotificationsWindow" owner:self options:nil]objectAtIndex:0]; customView.frame= CGRectMake(12, 12, customView.frame.size.width, customView.frame.size.height); UITapGestureRecognizer *recognizerForSubView = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTapBehindAgain:)]; [recognizerForSubView setNumberOfTapsRequired:1]; recognizerForSubView.cancelsTouchesInView = NO; //So the user can still interact with controls in the modal view [customView addGestureRecognizer:recognizerForSubView]; [self.view addSubview:customView]; UITapGestureRecognizer *recognizerForSuperView = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTapBehind:)]; [recognizerForSuperView setNumberOfTapsRequired:1]; recognizerForSuperView.cancelsTouchesInView = NO; //So the user can still interact with controls in the modal view [customView.superview addGestureRecognizer:recognizerForSuperView]; (void)handleTapBehind:(UITapGestureRecognizer *)sender { NSLog(@"tapped"); [[self.view.subviews lastObject] removeFromSuperview]; [self.view removeGestureRecognizer:sender]; } I want to make it so that the recognizer for the super view dismisses the subview, but not to interfere with the other taps on the super view.

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  • "SpeechHypothesized event not raised"

    - by Jankhana
    Hi all, I need to detect the user voice when they pick-up the reciever on the other end. Because Modems usually start playing files (playback terminal) when the first ring goes there. So I planned to use speech recognition when they say "hello", it can start playing the file until wait for playing file. Or even any noise interference it can start speak. I accomplished this with few settings. I found few common words that my engine detects when we speak and the words that comes when it's ringing. It works fine as a stand alone application but if I try to integrate this with my application it just does not raises "SpeechHypothesized" event. I cant understand why this happens. If i see using a break point, the engine is having the delegate assign and invocation property also is initialized properly but than to is doesn't call the event. For calling I'm using C4F tapi manager and for speech recognition i'm using System.Speech library of .Net 3.5. The code for events is as follows : engine.SpeechDetected += new EventHandler<SpeechDetectedEventArgs>(engine_SpeechDetected); engine.SpeechRecognized += new EventHandler<SpeechRecognizedEventArgs>(engine_SpeechRecognized); engine.SpeechHypothesized+=new EventHandler<SpeechHypothesizedEventArgs> (engine_SpeechHypothesized); engine.SpeechRecognitionRejected += new EventHandler<SpeechRecognitionRejectedEventArgs>(engine_SpeechRecognitionRejected); All event's are raised except the speechhypothesized event. Any idea why this happens ????

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  • Finding patterns in source code

    - by trex279
    If I wanted to learn about pattern recognition in general what would be a good place to start (recommend a book)? Also, does anybody have any experience/knowledge on how to go about applying these algorithms to find abstraction patterns in programs? (repeated code, chunks of code that do the same thing, but in slightly different ways, etc.) Thanks Edit: I don't mind mathematically intensive books. In fact, that would be a good thing.

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  • Finding a small image in a bigger one

    - by tur1ng
    Given an image with a large dimension ( 1.000 x 1.000). What is a good approach to find a small image (e.g. 50 x 50) in the big one? The smaller image can be rotated and differ in the size, but only with a 1:1 ratio. It's not related to any programming language - I'm just interested in pattern recognition. Thank you.

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  • What is voice xml?

    - by Kullpu
    While looking for a way to use speech recognition with flash I crossed paths with voice xml. I've gone through the wc3 description of it but still I got a few big doubts. Can I simply create a vxml doc and place it on my webserver? what are the requirements? Will it work? Can I input with a microphone over the internet? I cant seem to find a direct answer to it.

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  • Trouble with detecting gestures over ListView

    - by Andrew
    I have an Activity that contains a ViewFlipper. The ViewFlipper includes 2 layouts, both of which are essentially just ListViews. So the idea here is that I have two lists and to navigate from one to the other I would use a horizontal swipe. I have that working. However, what ever list item your finger is on when the swipe begins executing, that item will also be long-clicked. Here is the relevant code I have: public class MyActivity extends Activity implements OnItemClickListener, OnClickListener { private static final int SWIPE_MIN_DISTANCE = 120; private static final int SWIPE_MAX_OFF_PATH = 250; private static final int SWIPE_THRESHOLD_VELOCITY = 200; private GestureDetector mGestureDetector; View.OnTouchListener mGestureListener; class MyGestureDetector extends SimpleOnGestureListener { @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { try { if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH) return false; // right to left swipe if(e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) { if (mCurrentScreen != SCREEN_SECONDLIST) { mCurrentScreen = SCREEN_SECONDLIST; mFlipper.setInAnimation(inFromRightAnimation()); mFlipper.setOutAnimation(outToLeftAnimation()); mFlipper.showNext(); updateNavigationBar(); } } else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) { if (mCurrentScreen != SCREEN_FIRSTLIST) { mCurrentScreen = SCREEN_FIRSTLIST; mFlipper.setInAnimation(inFromLeftAnimation()); mFlipper.setOutAnimation(outToRightAnimation()); mFlipper.showPrevious(); updateNavigationBar(); } } } catch (Exception e) { // nothing } return true; } } @Override public boolean onTouchEvent(MotionEvent event) { if (mGestureDetector.onTouchEvent(event)) return true; else return false; } ViewFlipper mFlipper; private int mCurrentScreen = SCREEN_FIRSTLIST; private ListView mList1; private ListView mList2; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.layout_flipper); mFlipper = (ViewFlipper) findViewById(R.id.flipper); mGestureDetector = new GestureDetector(new MyGestureDetector()); mGestureListener = new View.OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { if (mGestureDetector.onTouchEvent(event)) { return true; } return false; } }; // set up List1 screen mList1List = (ListView)findViewById(R.id.list1); mList1List.setOnItemClickListener(this); mList1List.setOnTouchListener(mGestureListener); // set up List2 screen mList2List = (ListView)findViewById(R.id.list2); mList2List.setOnItemClickListener(this); mList2List.setOnTouchListener(mGestureListener); } … } If I change the "return true;" statement from the GestureDetector to "return false;", I do not get long-clicks. Unfortunately, I get regular clicks. Does anyone know how I can get around this?

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