Convex Optimization Based Bit Allocation for Light Field Compression Under Weighting and Consistency Constraints

Bichuan Guo, Yuxing Han, Jiangtao Wen
2018 2018 Data Compression Conference  
Compared with conventional image and video, light field images introduce the weight channel, as well as the visual consistency of rendered view, information that has to be taken into account when compressing the pseudo-temporal-sequence (PTS) created from light field images. In this paper, we propose a novel frame level bit allocation framework for PTS coding. A joint model that measures weighted distortion and visual consistency, combined with an iterative encoding system, yields the optimal
more » ... t allocation for each frame by solving a convex optimization problem. Experimental results show that the proposed framework is effective in producing desired distortion distribution based on weights, and achieves up to 24.7% BD-rate reduction comparing to the default rate control algorithm.
doi:10.1109/dcc.2018.00019 dblp:conf/dcc/GuoHW18 fatcat:juifzldxbrg7xjrgocff3o4b34