How to calculate gradient of 5125124 image?

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Akshay Gore 2014-2-27

评论： Raghava S N 2024-10-23

Is this wrong or write?

If my output image is g(512*512*4) then gradient of g() is

gradver1=sqrt(g1(:,:,1).^2+g1(:,:,2).^2+g1(:,:,3).^2+g1(:,:,4).^2);

Raghava S N 2024-10-23

Hi,

From my understanding, you are looking to calculate the gradient of a 3D image.

Refer to this link which describes how to find the gradient magnitude and direction of 3-D image using the “imgradient3” function - https://www.mathworks.com/help/images/ref/imgradient3.html.

The directional gradients of a 3-D image can be found using the “imgradientxyz” function. Refer to this link for more information - https://www.mathworks.com/help/images/ref/imgradientxyz.html.

Hope this helps!