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From: Wayne King on 5 May 2010 06:21
"anxx12345 GUAHHUA" <anxx12345(a)gmail.com> wrote in message <hrr4or$nvh$1(a)fred.mathworks.com>...
> Is there anybody to help me?
> I need some matlab code of the following:
> about Roberts detector
> Prewitt detector
> Sobel detector
> Kirsch detector
> if you have more code about this.please send them to this e-mail:anxx12345(a)qq.com
> thank you very much

Hi, the EdgeDetector System object in the Video and Image Processing Blockset supports the following edge detection methods:

Sobel | Prewitt | Roberts | Canny

Wayne
From: Loren Shure on 5 May 2010 07:17
In article <hrr4or$nvh$1(a)fred.mathworks.com>, anxx12345(a)gmail.com
says...
> Is there anybody to help me?
> I need some matlab code of the following:
> about Roberts detector
> Prewitt detector
> Sobel detector
> Kirsch detector
> if you have more code about this.please send them to this e-mail:anxx12345(a)qq.com
> thank you very much
>

The function edge in Image Processing Toolbox does several of these:
Prewitt, Sobel, and Roberts (and more). The related fspecial has
prewitt and sobel as options as well.

--
Loren
http://blogs.mathworks.com/loren
http://matlabwiki.mathworks.com/MATLAB_FAQ
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