Title :
Cross-View Down/Up-Sampling Method for Multiview Depth Video Coding
Author :
Liu, Qiong ; Yang, You ; Ji, Rongrong ; Gao, Yue ; Yu, Li
Author_Institution :
Dept. of Electron. & Inf. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China
fDate :
5/1/2012 12:00:00 AM
Abstract :
In this letter, we propose a cross-view down/up-sampling (CDU) method for the framework of reduced resolution multiview depth video coding, which exploits cross-view information to assist the up-sampling at the decoder. In the down-sampling procedure of CDU, the odd-even interlaced extraction is employed to preserve more confident information of the original depth video with reduced resolution. In the decoder, the cross-view information is exploited for up-sampling the reconstructed depth video. An iterative interpolation process is proposed to eliminate the effect of compression distortion on this up-sampling. Experimental results demonstrate the gains of up to 3.88 dB for the proposed algorithm and better quality of synthesized views.
Keywords :
feature extraction; image reconstruction; image sampling; interpolation; iterative decoding; video coding; CDU; crossview down-up sampling method; crossview information; decoder; depth video reconstruction; iterative interpolation process; multiview depth video coding; odd-even interlaced extraction; view synthesis; Decoding; Image coding; Image reconstruction; Image resolution; Interpolation; Signal processing algorithms; Three dimensional displays; Cross-view; down/up-sampling; multiview depth video; view synthesis;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2012.2190060
