Method and apparatus for frame rotation in the JPEG compressed domain
US8947551B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 29, 2011 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Apr 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging system may include an image sensor array and circuitry that rotates and encodes images from the image sensor array. The circuitry may encode images from the image sensor into an image format such as a Joint Photographic Experts Group (JPEG) format. The circuitry may perform rotations of the images during encoding into Joint Photographic Experts Group (JPEG) format. Image rotations during encoding and compression may include redefining minimum coded units of the encoded image such that minimum coded units of a rotated image are processed in the same order as minimum coded units in a non-rotated image. Redefinition of minimum coded units may include rewriting of parameters in a start of frame segment of an image data stream such that the height and width of minimum coded units are reversed during rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.