When halving chroma channels width and/or height, what\'s the correct way to subsamble?To take one chroma pixel for each 2x2 luma pixel, when sampling from a full-resolution chroma source, which chrom
How t开发者_Python百科o convert Bitmap returned by BitmapFactory.decodeFile() to YUV format (simillar to what camera\'s onPreviewFrame() returns in byte array)?Here is some code that actually works:
I use ffmpeg to decode flv frame to yuv420p.But I don\'t know how 开发者_开发百科to display it on android
I am writing an iOS application that gets live video streams from analog security cameras. I can get the video stream from our server application and decode it from it\'s proprietary format on the pho
can i perform skin detection us开发者_如何转开发ing a set of rules (things like x1 < Y < x2 )The short answer is yes, you can.
I\'m trying to perform image colour conversion from YCbCr to BGRA (Don\'t ask about the A bit, such a headache).
I know the following 开发者_运维知识库formula can be used to convert RGB images to YUV images. In the following formula, R, G, B, Y, U, V are all 8-bit unsigned integers, and intermediate values are 1
I\'ve just tried to optimize an RGB to YUV420 converter. Using a lookup table yielded a speed increase, as did using fixed point arithmetic. However I was expecting the real gains using SSE instructio
I know th开发者_JS百科e subject was on the board many times, but i can not get it work anyhow...
I have an app that generates a bunch of jpgs that I need to turn into a webm video. I\'m trying to get my rgb data from the jpegs into the vpxenc sample. I can see the basic shapes from the original j
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