CGAL users discussion list

[Hamid G <>]

Hello,

I've been trying to use labellized_trilinear_interpolation() to get label
values of a given point in an Image_3 object,
and I haven't been successful.

To give you an example, let's say I want to find out the label for Point(0.,
0., 57.) in provided image stack "liver.inr.gz".
So I took the code in examples/Mesh_3/mesh_3D_image.cpp and just added the
following line after reading in the image in line 32:



When compiled and run, the code SEGFAULTs, and a little debugging showed
that in function labellized_trilinear_interpolation()
in Image_3.h (line 451), when it tries to insert the label it finds to a
std::set, a EXC_BAD_ACCESS is thrown!

So my main question is what I am doing wrong here? Is there some sort of
requirement that I have to follow before calling that function?

Also, assuming I can fix this, how can I figure out the type of value that
labellized_trilinear_interpolation()
function is going to return, i.e. the Image_word_type?
As you can see, I'm using 'int' here but is there a (programatic) way of
knowing the 'type' so I can declare the right variable?

thanks in advance,



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