Mask-based spatio-temporal dithering
US11087442B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2019 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Nov 20, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a computing system may determine, for a pixel of a current subframe of a series of subframes, a compensated target pixel value based on a difference between (1) an aggregated target pixel value of the pixel in the current subframe and previous subframes of the series of subframes and (2) an aggregated actual pixel value of displayed pixel values of the pixel in the previous subframes of the series of subframes. The compensated target pixel value may compensate a quantization error for the pixel displayed in the previously subframes of the series of subframes. The system may access a mask value, corresponding to a pixel position of the pixel, from a dithering mask having a spatial stacking property. The system may determine a quantized pixel value for the pixel of the current subframe by quantizing the compensated target pixel value based on the mask value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.