Image Sampler (3D Image #extrude)

Hello everyone,

I'm using image sampler component trying to make a 3D picture put of it. Using the amplitude of the pictures to extrude pixels. I did the whole definition but problem is I do not know how to get a good quality out of it. Like it's not clear what the 3D is trying to show.

Any help or ideas? I attached the grasshopper file.

Thanks.