[Insight-users] LaplacianImageFilter only works on float or double images?

[Bill Lorensen]

All of the edge detection filters require "float" data types. I assume
this os because edge detection is sensitive to noise (and probably
truncation errors).  As a test you could turn off concept checking and
compare an unsigned char result with a float result.

On Fri, Dec 3, 2010 at 12:49 PM, David Doria <daviddoria at gmail.com> wrote:
> I am getting concept checking errors when trying to compute the
> Laplacian of an unsigned char image. Indeed it is mentioned in the
> documentation that  the input image must be float or double.  Is there
> a reason for this limitation?
>
> David
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