[Insight-users] Distance map computation on an empty image

[Luis Ibanez]

Hi Juan, Andrey,

Thanks for pointing this out, and for providing the images

I tried to download the images,

        http://iie.fing.edu.uy/~juanc/files/tmp


but they seem to lack reading permission.

I got the error message:


"Forbidden
You don't have permission to access
/~juanc/files/tmp/example.mask.01.png on this server.:"



Could you please take a look ?


 Thanks


          Luis


-------------------------------------------------------
On Sun, May 23, 2010 at 12:19 PM, Juan Cardelino
<juan.cardelino at gmail.com> wrote:
> In my case, I think this problem is also related to the depth of the
> image. With a zero input image you get that ramp, which is wrong. But,
> if I use the input image with 8 bit depth I get  the same, probably
> because the threshold to determine the input points is fixed and not
> relative to the depth of the image.
> Regards,
>              Juan
>
>>
>> I got the same result even with a non-empty image, maybe my problem is
>> that the pixels I think there are white, and below some threshold and
>> taken as zero. But anyway, I've used the same method to generate a
>> couple of input masks, same images size but different contents. In one
>> case it works and in the other gives the same ramp as yours.
>>
>> working example:
>> SignedDanielssonDistanceMapImageFilter example.mask.01.png map.01.mha
>> a.mha b.mha
>> non-working example:
>> SignedDanielssonDistanceMapImageFilter example.mask.02.png map.02.mha
>> a.mha b.mha
>>
>> you can find both input and output images at
>> http://iie.fing.edu.uy/~juanc/files/tmp
>>
>> Seems a bug to me too.
>> Regards,
>>                 Juan
>>
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