Systems and methods for low complexity forward transforms using mesh-based calculations
US9516345B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2014 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Mar 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/42
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for low complexity forward transforms using mesh-based calculations are described herein. One aspect of the subject matter described in the disclosure provides a video encoder comprising a memory configured to store video information. The video encoder further comprises a processor in communication with the memory. The processor is configured to decompose a transform into multiple transform stages. The processor is further configured to transform the video information using the multiple stages to determine a transform stage output at each transform stage. The processor is further configured to constrain the transform stage output at each transform stage to a predetermined bit depth. The processor is further configured to perform operations on the constrained transform output of a last stage of the multiple stages, wherein the operations are only available for use with data having the predetermined bit depth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.