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Expectation Maximization using HSV

asked 2014-03-24 12:56:31 -0500

ajplockyer gravatar image

I have a working program which uses the EM class, trained on RGB values to classify pixels in an image. Is it possible to do the same thing using HSV values? The problem is that hue is an angle. Thus, the mean cannot be calculated in the usual way.

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answered 2014-03-25 12:53:38 -0500

xaffeine gravatar image

I would expect trouble if a lot of your data has hue near zero. If hue-space is not well populated, you can work around this by adding a "magic" value to every hue. Otherwise, you might need to a more appropriate color space.

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Thankyou for the suggestions. I ended up using Lab_color_space, which seems to work well.

ajplockyer gravatar imageajplockyer ( 2014-03-27 11:48:23 -0500 )edit

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Asked: 2014-03-24 12:56:31 -0500

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Last updated: Mar 25 '14