[Insight-users] HELP!! Looking for a proper segment algorithm.

[Jon Haitz Legarreta]

Hi,
well, start reading chapter nine in the ITK software
guide<http://www.itk.org/ItkSoftwareGuide.pdf>.

Vessel segmentation may not be evident, especially if vessels lack
contrast. I'm sure you can find tens of papers on the topic if you look for
it on the Internet.

Depending on the nature of the imag, the accuracy you need, and if contrast
is present or not, a simple region growing may be enough. And looking at
your matrix, simple thresholding or gradient detection (boundary detection)
may work.

Good luck,
JON HAITZ



On 20 October 2012 16:31, 龍龍 <anjingdelonglong at gmail.com> wrote:

> HI, all.
>
> now i have got a matrix standing for a cross-section of a vessel. i want
> to extract the vessel part. But have no idea what segment method should i
> use.
>
> 14 8 12 17 4 0 0 0 0 0 0 0 0 0 0 0 0
> 18 16 16 8 0 0 0 0 0 18 97 108 100 78 0 0 0
> 5 0 0 0 0 0 0 99 170 170 142 103 97 134 80 0 0
> 5 0 0 0 0 0 0 99 170 170 142 103 97 134 80 0 0
> 1 0 0 0 0 0 92 174 149 149 111 70 122 136 84 0 0
> 0 0 0 0 0 2 168 164 130 130 84 93 139 130 18 0 0
> 0 0 0 0 0 124 147 122 99 99 75 99 124 104 0 0 0
> 0 0 0 0 0 147 134 104 85 85 86 123 138 43 0 0 0
> 0 0 0 0 27 153 139 131 103 103 97 120 93 0 0 0 0
> 0 0 0 0 27 153 139 131 103 103 97 120 93 0 0 0 0
> 0 0 0 0 16 151 184 188 139 139 120 77 0 0 0 0 0
> 0 0 0 0 67 162 193 166 135 135 127 0 0 0 0 0 0
> 0 0 0 0 0 44 112 131 74 74 0 0 0 0 0 0 0
> 0 0 0 0 0 61 126 130 40 40 0 0 0 0 0 9 0
> 7 0 0 0 0 0 0 0 0 0 0 0 0 0 5 13 0
> 8 9 0 0 0 0 0 0 0 0 0 0 0 0 5 13 0
> 14 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
>
>
> the number stands for the intensity of each pixel. i want a fast and
> robust segment algorithm to help me to extract the vessel part.
> THANKS.
>
> --
> Nothing but a MADAO！
>
>
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