detection

问题 Is it possible to change the colorscheme in Vim when I open a .vim, .htm, .html, .xml or the _vimrc file? (also change colorscheme when I switch to an already open file with above extension) This is what I want my vim to do: file = txt or a new (not saved) buffer: colorscheme1 (default colorscheme) file = vimrc, vim, html, htm: colorscheme2 I noted also that my vim doesn't detect all filetypes. Text files are not recognized as text file. ps: If this is not possible would it be possible to

问题 I'm trying to detect voice throught input from the microphone in real-time. I allready receive the input, execute FFT algorithm and have the result in dB. I have a frequency domain, a time domain and a spectogram. How can I get the fundamental frequency? If I get the fundamental frequency can I specify that if the frequency is between certain values, then it is voice that we are talking? Is there any other way to do this with the things that I allready have? Tks in advance 回答1: There are many

问题 I've been working on a Windows Phone 7 app for a few months now and have a collection of useful detection flags that are used to test for things like if the code is running in the emulator, on a background/foreground thread, or at design time. (see full list here) I now want to add a new flag that will check if the phone is connected to a desktop using a USB cable to prevent issues that users are reporting. There are certain operations that are blocked while the phone is connected to the Zune

问题 I'm looking for the best way to detect more than one finger on the screen at time. I'm not detecting taps or pinching, just the fact that more than one touch is happening. There don't seem to be any gesture recognizers for that. What's the best way? 回答1: In the touchesBegan, touchesMoved, and touchesEnded methods, one parameter is event, which is a UIEvent object. The number of fingers on the screen is [[event allTouches]count]. [EDITED because Josh Hinman pointed out that I had it wrong

问题 Is there a way to detect if a visitor to my site is running Chromium as opposed to Google Chrome? Even basic UA sniffing (which I know is bad practice) would suffice for my particular case, but it appears that Chromium and Chrome share the same UA string – is that correct? Is there any other way that I can differentiate between the two? 回答1: Chrome ships with a built-in PDF reader, Chromium doesn't. You could detect this by using JavaScript: function isChrome() { // Actually,

问题 Pls help me, I want demo detec face, eyes, lips on image but i research not found. Thank all!!!! 回答1: You could try a library like the Oddcast Face Detection API, which tracks points like the eyes, the nose and the chin. http://www.oddcast.com/dev/facedetectionAPI/ You need to buy a license for this API. There are a couple of other libraries for face detection with Flash, but this is the only one so far that tracks different features, like the eyes. 来源： https://stackoverflow.com/questions

问题 I want to show the temperature based on the density. Following are the function that Im using, def add_heat(heatmap, bbox_list): for i in range(len(bbox_list)): rect = trackers[i].get_position() heatmap[int(rect.left()):int(rect.top()), int(rect.right()):int(rect.bottom())] += 1 return heatmap def apply_threshold(heatmap, threshold): # Zero out pixels below the threshold heatmap[heatmap <= threshold] = 0 # Return thresholded map cv2.imwrite("heatmap.png",heatmap) return heatmap add_heat

问题 I'm creating a game with JavaScript and HTML Canvas. It's a multiplayer 2D game with tanks that try to hit each other. The tanks can move as well as rotate. How can you figure out collision detection with rotating rectangular objects? I know, I could make them square and use circular detection, but it looks very messy when a tank runs into a wall. Thanks for all who try to help :) 回答1: Move hit point to local space First an alternative There are many ways you can do it. The simplest way. When

问题 I want to crop the image between two lines, as shown in the image below. But the bottom line is not recognized well with HoughLinesP . The bottom line points are not really edged because of eroding, but is it important? How can I detect the bottom line, and then crop the image according to these 2 lines? Original image: Processed image: Canny edged: Lines detected: Code For Line Detection : Mat dst, cdst,src2; cv::blur( src, src2, cv::Size(5,5) ); Canny(src2, dst, 150, 300, 5); cvtColor(dst,

问题 How do you implement a touch hash code and reference it later? I have read about a "hash" code, but I don't understand how to use it. I want to know when two of my Sprites are touched at the same time, like as if pressing a chord on two keys of a piano. Here is an example of what I have for my ccTouchesBegan: - (void) ccTouchesBegan:(NSSet*)touches withEvent:(UIEvent*)event { NSSet *allTouches = [event allTouches]; int validTouchCount = 0; for (UITouch* touch in allTouches) { BOOL