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I have a very simple input image: it's fully black and has a tiny bright red dot somewehere in it. The colors are "pure", meaning the blacks are (0,0,0), the red dot is at full 255 red intensity.

Now I would like to find the coordinate of the red dot. I thought this would be rather simple, since all I need is the position of the first non-black pixel in my image. That would be good enough for my application.

But I have searched quite a while and could not find a simple and fast solution to do this with OpenCV.

PS: I know that OpenCV has a blob detection, but that seems waaay to powerful (and expensive) for this simple task.

Thank you for the clarification. That is indees rather inintuitive ;-)

That sounds like a good solution. I'm having some trouble using this function though. This is my code: coords = cv.find

That sounds like a good solution. I'm having some trouble using this function though. This is my code: coords = cv.find

That sounds like a good solution. I'm having some trouble using this function though: *coords = cv.findNonZero(red_chan

That sounds like a good solution. I'm having some trouble using this function though: coords = cv.findNonZero(red_chann

Find first non-black pixel I have a very simple input image: it's fully black and has a tiny bright red dot somewehere i