I don't know what to look for.

I believe an image worth 1000 words. I took a picture of a small piece of a picture I have in my leaving room (from the reflection you can see the textured cracks are 3D).
Any idea how to make such pattern?
Mind you the area enclosed in such small shape is about half centimeter, overall there should be lot of very small and thin shapes to fill the image.

Thanks...

http://img28.imagevenue.com/img.php?image=22174_Sample_122_903lo.jpg