High-Quality Rendering of Varying Isosurfaces

Smooth trivariate splines on uniform tetrahedral partitions are well suited for high-quality visualization of isosurfaces from scalar volumetric data. We propose a novel rendering approach based on spline patches with low total degree, for which ray-isosurface intersections are computed using effcient root finding algorithms. Smoothly varying surface normals are directly extracted from the underlying spline representation. Our approach is using a combined CUDA and graphics pipeline and yields two key advantages over previous work. First, we can interactively vary the isovalues since all required processing steps are performed on the GPU. Second, we employ instancing in order to reduce shader complexity and to minimize overall memory usage. In particular, this allows to compute the spline coeffcients on-the-fly in real-time on the GPU.

http://www.gris.informatik.tu-darmstadt.de/~mgoesele/projects/C1-isosurfaces....

Category:

Science & Technology

Tags:

• CUDA
• Raycasting
• Isosurface
• Volumerendering
• trivariate
• Splines
• realtime

[MalarkyMan15]

were these people using commercial graphics cards or did they create their own GPU rendering processes to render this stuff?

[thomasdidikoch]

The hole application is running on the GPU (on one NVidia GTX 280) using CUDA and OpenGL.

[UntoldSecrets1]

whats and isosurface?

[thomasdidikoch]

Isosurfaces are interfaces (boundary surfaces) within a volume of space.

In medical 3D-scans (MRI or CT) these isosurfaces allow the visualization of bones or internal organs.

[secoxxx]

is this real time rendering?

[thomasdidikoch]

Yes, it is real time rendering.

[davbryn]

very impressive

[LordDumal]

rendering in real time without POLYGONS HOLY SHIT

[mikemurko]

I've always had the impression that one day video games will uses these structures added with realistic physics engines so that damage of bodies (structures/biological) and growth can be totally dynamic. I guess it's a massive computational problem because you're storing data for everything *inside* of a structure rather than just the surface. Maybe these isosurfaces can be created as top layers are removed to give the impression of full volume?

[Resdim]

DUDE HOLLY SHITS!

Look at that head moving in and out of existence! What a trip, I gotta hook that file up and mess around with it on lsd sometime! lol

[sprintrjm]

One more question..

Can you make one to fit in my fleshlight?

[sprintrjm]

Only one question remains.

Can you smoke it?

[UntoldSecrets1]

thnx you.

[vwr0527]

wow looks like a LOT of polys

there are polys in this movie right? This isn't voxels or anything like that?

[pivotvidsforyou]

Lol Thank You.