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From: karthik on 4 Dec 2009 08:51
which edge detector is the best for ct images,,,?

handling medical images is of crucial concern... so please suggest me a good one
From: Dave Robinson on 4 Dec 2009 10:43
"karthik " <dhilipchandru(a)gmail.com> wrote in message <hfb446$ekk$1(a)fred.mathworks.com>...
> which edge detector is the best for ct images,,,?
>
> handling medical images is of crucial concern... so please suggest me a good one

First the health warning, I have never tried to process a CT image, so you must take this into account when evaluating my suggestion.

The image processing toolbox has an edge detection tool, called edge. It has several options such as Sobel etc. which are relatively straight forward convolutional edge detectors. However it also has access to the Canny edge detection algorithm that conventionally contains two parameters that enable it to be configured to optimize it for a particular application, and hence I believe may well be configurable to your particular needs. Now I am at a disadvantage here, as I don't have the Image Processing toolbox, and when I have used the Canny detector with its default settings, it did what I required, consequently I cannot remember exactly how you do the adjustment, so I am afraid, unless one of the Guru's come on line, that is about as far as I can take you.

Regards

Dave Robinson
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