[Insight-users] Extracting surface normals of 3D binary object

[Kishore Mosaliganti]

you can also compute the signed distance function of the binary image
and then compute the gradient. This will automatically give you unit
normals everywhere in the image.

Kishore

On Sun, Feb 28, 2010 at 1:22 PM, siqi chen <siqichensc at gmail.com> wrote:
> I would smooth the binary field with GaussianFilter and compute the
> gradient, this will give you an approximated normal direction.
>
> On Sat, Feb 27, 2010 at 3:06 PM, J. Pura <puraj at mail.nih.gov> wrote:
>>
>> Hello,
>>
>> I would like to know if there is a convenient way in itk to extract the
>> surface normal of a 3D binary object at a specific point, or even for a
>> small neighborhood of points.
>>
>> Thank you,
>>
>> John
>> --
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>
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