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POConverting YUV into BGR or RGB in OpenCV
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copied!<p>I have a TV capture card that has a feed coming in as a YUV format. I've seen other posts here similar to this question and attempted to try every possible method stated, but neither of them provided a clear image. At the moment the best results were with the OpenCV <code>cvCvtColor(scr, dst, CV_YUV2BGR)</code> function call.</p> <p>I am currently unaware of the YUV format and to be honest confuses me a little bit as it looks like it stores 4 channels, but is only 3? I have included an image from the capture card to hope that someone can understand what is possibly going on that I could use to fill in the blanks.</p> <p><img src="https://i.stack.imgur.com/RsPNF.png" alt="YUV to BGR converted image"></p> <p>The feed is coming in through a DeckLink Intensity Pro card and being accessed in a C++ application in using OpenCV in a Windows 7 environment.</p> <p><strong>Update</strong></p> <p>I have looked at a wikipedia article regarding this information and attempted to use the formula in my application. Below is the code block with the output received from it. Any advice is greatly appreciated.</p> <pre><code>BYTE* pData; videoFrame->GetBytes((void**)&pData); m_nFrames++; printf("Num Frames executed: %d\n", m_nFrames); for(int i = 0; i < 1280 * 720 * 3; i=i+3) { m_RGB->imageData[i] = pData[i] + pData[i+2]*((1 - 0.299)/0.615); m_RGB->imageData[i+1] = pData[i] - pData[i+1]*((0.114*(1-0.114))/(0.436*0.587)) - pData[i+2]*((0.299*(1 - 0.299))/(0.615*0.587)); m_RGB->imageData[i+2] = pData[i] + pData[i+1]*((1 - 0.114)/0.436); } </code></pre> <p><img src="https://i.stack.imgur.com/WBGzS.png" alt="Attempted RGB conversion"></p>

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