How do I use OpenCV’s remap function?

This is just a simple misunderstanding of the documentation, and I don’t blame you—it took me a few fumblings to understand it, too. The docs are clear, but this function probably doesn’t work in the way you expect; in fact, it works in the opposite direction from what I expected at first. What remap() doesn’t … Read more

Color similarity/distance in RGBA color space

Finally, I’ve found it! After thorough testing and experimentation my conclusions are: The correct way is to calculate maximum possible difference between the two colors. Formulas with any kind of estimated average/typical difference had room for discontinuities. I was unable to find a working formula that calculates the distance without blending RGBA colors with some … Read more

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