INTRA AND INTER-COLOR PREDICTION FOR BAYER IMAGE CODING

摘要

An apparatus and method for selecting the use of inter-prediction or intra-prediction during enhanced encoding and decoding of Bayer images is presented. Intra-plane predictions rely on correlation between neighboring pixels of the same color, while inter-plane predictions rely on correlation between neighboring pixels in different color planes (i.e., different colors). A dynamic range decision is made to select whether to use the intra-plane or inter-plane prediction, towards eliminating large residuals which can arise in certain large edge situations.

主权项

1. An apparatus for selecting prediction mode during Bayer encoding, comprising:
(a) a computer processor configured for receiving color pixel data of an input Bayer image containing different color pixels associated with a plurality of different pixel group numbers; and (b) programming executable on the computer processor configured for performing steps comprising:
(i) determining dynamic range between multiple samples;(ii) reducing sample resolution to a given number of bits; and(iii) determining if a code word for said multiple samples is either (1) an intra-color exception case in which case inter-color prediction is selected, otherwise selecting intra-color prediction, or (2) an inter-color exception case in which case intra-color prediction is selected, otherwise selecting inter-color prediction.