Sobel filter with slider (GUI).

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Maria Lopez
Maria Lopez 2013-6-11
回答： Jyoti Verma 2020-1-14
Hello, So, I am trying to use a slider to manipulate the sobel filter to modify an image. The problem is I have no clue how sobel works whatsoever. I am pretty much still new to matlab, but I would appreciate if someone can at least explain how sobel works. Thank you.

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回答（3 个）

Amith Kamath
Amith Kamath 2013-8-19
编辑：Amith Kamath 2013-8-19
http://homepages.inf.ed.ac.uk/rbf/HIPR2/sobel.htm is a good introduction to the Sobel filter. It is essentially a Laplacian of Gaussian (LOG) filter which detects edges in your input image. http://www.mathworks.com/help/images/analyzing-images.html#f11-12512 may also help.
Image Analyst
Image Analyst 2013-8-19
The standard Sobel filter is done by the imgradient() function. That's a 3-by-3 filter. If you want to modify it, then you can choose a different size filter by using a LOG or DOG filter and conv2() or imfilter().
Jyoti Verma
Jyoti Verma 2020-1-14
Sobel Filter Edge Detection

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