I\'m trying to convert an image from RGB to grayscale.However, I am getting this error when trying: OpenCV Error: Null poi开发者_开发技巧nterin unknown
I use OpenCV 2.0, there is a method in the cv::Mat_<_Tp> class: // conversion to vector. operator vector<_Tp>() const;
I have to select any particular object visible in my image on i-phone. Basically my project is to segment image objects on the basis of my touch.
I have an image, which I can obtain at better quality (e.g. higher size). The problem is that I can\'t do template match on default size, only on a higher one. And the higher one is not fixed - it can
I\'m using OpenCV 2.2 and cvBlob in a c++ program and I\'m wondering how I can convert a \"label\" image TYPE IPL_LABEL (unsigned Int) to IPL_DEPTH_8U.
I tried to setup OpenCV using the modified Crystax NDK but did not succeed ( I managed to compile using CygWin but dont know where to go from there.) Is there a Simpler class library I开发者_StackOver
I have been using FFmpeg to find the middle frame of a h264 video file, and extract the jpg thumbnail for use on a streaming portal. This is done automatically for each uploaded video.
Apparen开发者_如何学Gotly, this code gives me error at the last line cvCvtColor(), what is wrong? Is there anything that can be improved in this function?
I have a problem with capturing image from my web cam (built in hp dv5). The only result is grey screen. Here\'s the code:
I\'m trying to achieve background subtraction in openCV 2.2 using the cv namespace (Qt4.7). I have the following code which compiles fine but when running the program breaks because one mat doesn\'t e
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