Methods and apparatus for shallow gradient artifact reduction in image display systems
US10798346B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2018 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | Mar 6, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3179
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In described examples, a method includes: receiving an array of image data pixels for display by a spatial light modulator; dividing the array of image data pixels into a plurality of blocks. For the blocks of the plurality of blocks, the method includes: computing a mean value for pixels in the block; computing a variance for pixels in the block; and, in response to the mean value and the variance, retrieving an indicator of a likelihood of a visible artifact for the block; and in response to the retrieved indicator, outputting a signal to selectively increase or reduce a load time of the spatial light modulator for displaying the array of image data pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.