[Insight-users] Help with GeodesicActiveContourImageFilter --> Modification to example code does not seem to work

Vimal Singh vimal at mail.utexas.edu
Tue Feb 1 18:47:00 EST 2011


Yes... SignedDanielssonDistanceMapImageFilter works fine. Thanks a lot guys.


On 2/1/2011 5:04 PM, Juan Cardelino wrote:
> Hi guys,
>              There is also the possibilty of directly using the
> SignedDanielssonDistanceMapImageFilter which computes the level set
> from a mask image. This masks defines whats inside the initial
> contour.
> Best,
>          Juan
>
> On Tue, Feb 1, 2011 at 7:22 PM, Kishore Mosaliganti
> <kishoreraom at gmail.com>  wrote:
>> Hi Vimal,
>>
>> The levelset function is supposed to be initialized in such a way that
>> there is a negative and positive part in the range of the function.
>> The fast marching filter allows one to specify negative seeds and
>> therefore it generates a 0 levelset which is a circle.
>>
>> The output of the Danielsson Distance map is a fully positive function.
>>
>> To make it work, subtract some value from its output before setting it
>> as input to the levelset filter.
>>
>> Kishore
>>
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