Direction of maximum change of intensity in gradients

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shab shekan
shab shekan 2011-7-16
I compute space-time gradients of each pixel of video frames and all this gradient must be pointing in direction of maximum change of intensity in space-times. How can i do it?
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shab shekan
shab shekan 2011-7-19
I don't know what's the problem.Is the question very hard and complicated?there are many expert in this site, but nobody can answer!!!
Walter Roberson
Walter Roberson 2011-7-19
I don't understand the question. Some examples might help.

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回答（1 个）

Image Analyst
Image Analyst 2011-7-16
Look at the example in the help for the quiver() function.
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shab shekan
shab shekan 2011-7-16
let me explain my question. I have to compute space-time gradient around each pixel, and the size of this space time is 7*7*3.
actualy, I have a volume of gradient, and I have to determine the maximum change of intensity in this volume, and all gradients on that volume must be point to direction of maximum change of intensity.
I can't use quiver() function for this problem.
By the way, thank you so much.

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