Adaptive sampling at a target sampling rate
US11282258B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2021 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Feb 9, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/06
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Image quality can be improved by rendering the image based on an importance map that indicates regions of the image that will benefit from more samples. Adaptive sampling determines a number of samples for each pixel of the image using a target sampling rate and the importance map for the image. The number of samples for each pixel needs to be a non-negative integer value, so the per-pixel sampling rates are quantized using per-pixel random values. The resulting quantized sampling rates provides a distribution of samples that closely matches the importance map. The per-pixel random values may vary over time so that the average of the distribution more closely matches the importance map.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.