[Insight-users] Regarding Fast Marching

[Kevin H. Hobbs]

On 06/20/2011 12:37 AM, amit satish wrote:
> On 6/17/2011 4:23 PM, Kevin H. Hobbs wrote:
>>
>> My advice to you is to take the example programs and to cut them
>> up into the smallest usable pieces so that you can actually look
>> at the images at each step. For the fast marching example you'd
>> end up with 5 tiny programs :
>>
>> reader ->  smoother           ->  writer
>> reader ->  gradient magnitude ->  writer
>> reader ->  sigmoid            ->  writer
>> reader ->  fast marching      ->  writer
>> reader ->  threshold          ->  writer
>>
>>    
> Dear Sir,
>                 I am able to open images in paraview

Very good now take a look at several of them.

Do the objects you are interested in have very different values
from what surrounds them?

Do the images have a lot of noise or fine detail that's of a size
much smaller than the object you are interested in?

Does the object have a well defined boundary?


>  but i want know how 
> get the data as you shown in mail from paraview. 

What I gave you was "hand drawn" ASCII art It was meant to give
you a general sense of what the values in the image should be at
each stage in the segmentation process.

You can get something similar by sampling the image along a line
and plotting the samples.


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