Joint color image and texture data compression
US11270468B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2020 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Dec 18, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/94
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an embodiment, a method involves accessing a first pixel block of an image, the first pixel block comprising pixels, each associated with three color values, determining whether to separately or jointly encode the three color values of each of the pixels of the first pixel block, determining that the three color values of each of the pixels in the first pixel block are to be jointly encoded based on (1) determining, based on the three color values of each of the pixels, a line defined within a three-dimensional coordinate system in which each of the pixels is represented as a three-dimensional point and (2) determining that the line satisfies a predetermined criteria, and encoding the three color values of each of the pixels in the first pixel block as a single quantized value based on a projection of the three-dimensional point associated with that pixel onto the line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.