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What algorithms would suit image colour summarization?

I would like to analyse a set of hundreds of thousands of product images (clothing, electronic goods etc) and retrieve the dominant colours in each. I'm only interested in the top 3 or 4 colours. The ...
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0answers
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Colour curves tool for “value” channel

I'm trying to write a program to read GIMP curves files and apply them to an image. I have successfully implemented the curves for the red, green and blue channels, but I can't get it working for the ...
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image processing algorithm to find solid square vs square outline in video frames

I am working on a system to detect an "embedded" 12 bit number within a series of frames that are recorded inside an mp4 file. The point of it is to automatically identify the "take", and also trim ...