REGION-OF-INTEREST CODING IN VIDEO TELEPHONY USING RHO DOMAIN BIT ALLOCATION

摘要

PROBLEM TO BE SOLVED: To provide techniques for region-of-interest (ROI) coding for video telephony (VT).;SOLUTION: A method comprises: obtaining a definition of a region of interest within a video frame; obtaining the number of encoding bits allocatable to the frame; and, at the macroblock (MB) level, mapping ρ domain values and quantization steps, using weighted bit allocation models based on video fidelity and perceptual quality, and allocating bits to ROI and non-ROI areas.;COPYRIGHT: (C)2012,JPO&INPIT