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Asked: 2026-05-25T23:40:09+00:00

I am trying to detect hands, and my algorithm works perfectly during day, but

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I am trying to detect hands, and my algorithm works perfectly during day, but during the night it completely fails- it shows no signs of working at all.

I have come to the conclusion this is because of lower light conditions.

Could someone please give me tips for better performance in lower light conditions?

My algorithm just uses cvInRangeS to find the skin-coloured pixels in an HSV image.

Any tip would do, regardless of how little it would help.

Thanks

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1 Answer

  1. Editorial Team

    Have you normalized your input first? What’s the average V value by day and by night?
    That said, your sensor will be RGB, and the transformation from RGB to HSV loses quite a bit of precision in the H and S components when R,G and B are low. In extrema: {0,1,0} is quite close to {1,0,0} but the hue is entirely different.

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