Title :
A workload balanced parallel view synthesis for FTV
Author :
Zhanqi Liu ; Xin Jin ; Chenyang Li ; Qionghai Dai
Author_Institution :
Shenzhen Key Lab. of Broadband Network & Multimedia, Tsinghua Univ., Shenzhen, China
Abstract :
In this paper, a parallel system together with an adaptive workload balancing algorithm is proposed for view synthesis on multi-core platforms. Based on system level data parallelism, an adaptive workload balancing method is proposed for depth image based rendering by evaluating the number of non-hole pixels after warping. Experimental results demonstrated that with the proposed workload balancing algorithm, the workload difference among the cores is reduced by 90.65% on average for 2-core systems and by 79.57% on average for 4-core systems, respectively. Compared with the parallel system without the proposed balancing algorithm, synthesis speed is further improved by 7.5% for 2-core systems and 8.9% for 4-core systems at maximum, respectively, without degradation in the subjective and objective quality.
Keywords :
image processing; rendering (computer graphics); resource allocation; three-dimensional television; FTV; adaptive workload balancing algorithm; depth image based rendering; free viewpoint TV; multicore platforms; nonhole pixels; parallel system; system level data parallelism; warping; workload balanced parallel view synthesis; Adaptive systems; Degradation; Merging; Multicore processing; Partitioning algorithms; Prediction algorithms; Three-dimensional displays; FTV; Parallel view synthesis; depth image based rendering; workload balancing;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2015 IEEE International Conference on
Conference_Location :
South Brisbane, QLD
DOI :
10.1109/ICASSP.2015.7178232
