How to estimate depth from gradient?

Hello,

I have a gradient of an image:

mask = fspecial('sobel');
mask2 = mask';
dX = imfilter(image, mask);
dY = imfilter(image, mask2);

And I want to estimate depth from the gradient, any thoughts on how to do so?

Thanks in advance!

[David Young]

Why do you think that might be possible?

[Image Analyst]

Don't call your image variable "image" - that is the name of a built-in function that you shouldn't destroy/override. What do the "intensity" values of your image represent? A distance, like it's a topographic, profilometry, or Kinect image?

[Talya]

Thank you for the advice on image variable.

Yes the image intensity values represent a distance.

Answer 1

[Sean de Wolski]

If your pixels represent depth (i.e. change in a third dimension), then integrating the gradient should give you height. This means you'll need to know the height at one location.