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Topic: Is gradient(I(x,y)) vector ?
Replies: 1   Last Post: Feb 8, 2013 3:22 AM

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Registered: 11/8/10
Re: Is gradient(I(x,y)) vector ?
Posted: Feb 8, 2013 3:22 AM
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"Carl S." wrote in message <kf1vos$kil$>...
> Hi
> When you compute the gradient of an image (8bit, grayscale), then is the result vector or scalar ?
> I mean that does grad(I(x,y)) return vector values or scalar values ?

A vector.
grad(I(x,y)) = (dI(x,y)/dx, dI(x,y)/dy)

Best wishes

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