Frequency component selection for image compression
US11553187B2 · kind B2 · utility
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38References
19Claims
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Key dates
| Filing date | Nov 20, 2018 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Jun 4, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of compressing image data representing one or more images, the method including obtaining pixel data from the image data, the pixel data representing an pixel array within the one or more images, applying a transformation to the pixel data to determine a set of frequency coefficients indicative of frequency coefficients of the pixel array, encoding a selected subset of the set of frequency coefficients, generating an index indicative of the encoded frequency coefficients and generating compressed image data using the encoded frequency coefficients and the index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.