[Insight-users] 3D and 2D image for VED filter

[Wen Shi]

Hi Guys,

When I was using VED filter processing some vessel image,
I got the error as :
RecursiveGaussianfilter requires at least 4 pixels along axis 2.

So I guess the problem is the image I tried to process is a 2D image.
But to my personal intuition it's a 3D one.
How to decide the image is 3D or 2D?(maybe this seems pretty stupid and ridiculous but sorry for that).

Thanks a lot 

Wen SHi