University of Pennsylvania, CIS 565: GPU Programming and Architecture, Project 3
- Li Zheng
- Tested on: Windows CUDA10, i5-3600 @ 3.59GHz 16GB, RTX 2060 6GB (personal computer)
-
How denoising influences the number of iterations needed to get an "acceptably smooth" result?
For the cornell_ceilight_light scene, the denoising takes 10 iterations to smooth the rendering result. Without denoising, it takes about 600 iterations to get an "acceptably smooth" result. -
How it impacts runtime at different resolutions?
The runtime increases with resolution. Approximately, runtime is in proportion to resolution.x * resolution.y. -
How effective/ineffective it is with different material types?
It works well with diffusive material, but is ineffective with reflective and refractive material.
| Filter size | 10 | 30 |
|---|---|---|
| Visual result |  |
 |
| Time(ms) | 37.6 | 50.1 |
| Filter size | 60 | 80 |
|---|---|---|
| Visual result |  |
 |
| Time(ms) | 67.0 | 105.5 |
| small light | large light |
|---|---|
 |
|
The scene with large light has a better performance. Because the traced rays have higher probability to hit the large lights and terminates earlier, which introduces less noise.