Method and apparatus for fast and efficient image compression and decompression
US10917663B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 2016 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Apr 22, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/93
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method and apparatus for fast and efficient image compression and decompression comprising transform coding of image data to generate an image representation using transform coefficients, bit-plane serialization of the image representation using transform coefficients, and for each bitplane optimal prefix encoding of bits in a bitplane sharing local context, run-length encoding of 0 bit sequences in the bitplane and storing the coefficients received after optimal prefix encoding and 0 run length encoding starting with the sign followed by the bits in the order of significance, starting with the most significant bit to the least significant bit in a seektable in a header section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.