System and method for mapped splicing of a three-dimensional look-up table for image format conversion
US10600148B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 2018 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Apr 17, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/64
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method that splices an initial 3D LUT for imaging format conversion into a plurality of smaller LUTs that can be stored in separate RAMs. During operation, the upper 5-bits serve as index values of each component of an incoming GBR pixel and are used to determine which of the smaller RAMs contain the correct index values for the pixel data. Specifically, a first index value can be derived from the incoming GBR pixel data and used to lookup all sub-cube vertices corresponding to the incoming pixel and the corresponding RAMs. After determining the correct RAMs, a predetermined algorithm for each given RAM is applied to find the normalized RAM look-up addresses and identify the correct data for the exemplary imaging format conversion process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.