Inverse transform sampling by ray tracing
By using ray traversal search and importance sampling, the texture rendering process is optimized using ray tracing hardware, which solves the problem of unreliable performance of traditional inverse transform sampling and achieves improved rendering performance and reduced noise.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NVIDIA CORP
- Filing Date
- 2022-08-12
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies, when rendering images or videos in real time, rely on traditional inverse transform sampling methods that are unreliable in performance and cannot effectively control variance reduction or performance priority, resulting in high noise levels and making it difficult to provide high-quality content with limited performance budgets.
Ray traversal search is used to replace traditional binary search. Importance sampling is performed using ray tracing hardware. By determining the cumulative distribution function and geometric representation of the texture, rays are traced to improve sampling performance. Furthermore, the geometric representation of the intersecting cumulative probability is modified to reduce variance.
It significantly improves rendering performance, reduces image noise, and achieves up to 70% performance improvement while maintaining a similar variance reduction effect.
Smart Images
Figure CN122415339A_ABST