is it possible to have orientation gradient based histogram for color images??

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tamanna
tamanna 2013-3-16

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Image Analyst
Image Analyst 2013-3-16
The gradient is not a color thing. It has a magnitude and a direction. You may have those for each color plane (R, G, B) or you may have done the gradient on one of the HSV channels if you converted the image to SHV color space. You'd have to take the histogram of one of those images.
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tamanna
tamanna 2013-4-1
@ anand actuly i am working on the ear images want to extract the features that are invariant to scale,rotation and occlusion. plz help me out if u can.

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