Back to results
US 2020/0288154 A1Published application
Hybrid palette-dpcm coding for image compression
AssigneeSony Corporation
InventorsMohammed Golam Sarwer, Ali Tabatabai
Life of this patent
Estimating the term…
Abstract
A hybrid palette-DPCM coding implementation generates a palette for the most dominant colors in an image block and an index block based on the palette. Additionally, for pixels that are not in the palette, DPCM coding is utilized. By combining palette coding and DPCM coding, the image encoding process is optimized.
Claims20
A method programmed in a non-transitory memory of a device comprising:
- generating a palette for an image block;
- generating an index block for the image block;
- transmitting the palette and the index block;
- and
- encoding escape pixels using differential pulse-code modulation.
2 more elements
An apparatus comprising:
- a non-transitory memory for storing an application, the application for:
- generating a palette for an image block;
- generating an index block for the image block;
- transmitting the palette and the index block;
- and
- encoding escape pixels using differential pulse-code modulation;
- and
- a processor coupled to the memory, the processor configured for processing the application.
5 more elements
A system comprising:
- a first computing device configured for:
- generating a palette for an image block;
- generating an index block for the image block;
- transmitting the palette and the index block;
- and
- encoding escape pixels using differential pulse-code modulation;
- and
- a second computing device configured for:
- decoding the palette and the index block, decoding the escape pixels using inverse differential pulse-code modulation and combining the decoded palette, index block and escape pixels to generate a decoded image.
6 more elements
Dependencies are inferred from the claim text.