关键词: 精细可分级视频编码（FGS）, 可分级, 多视点, 立体视频

Abstract: To improve the low coding efficiency problem of an existing multi-view stereo video FGS scalable scheme，this paper makes full use of the similarity between adjacent views，adapts different demands on Quality-First（QF） or View-First（VF） of the decoder，and provides a tradeoff between image quality and view number.Improvement have been made for three situations，I，P，B frames，respectively.The mid-view is encoded as base layer，while other views are predicted from the partly retrieved FGS enhancement layers for adjacent views，thus produces the FGS enhancement layers for current view.Experimental results have shown that this scheme has more flexible and extensive scalable characteristic，which can adapt different demands on image quality and stereo impression of different users.

Key words: Fine-Granular-Scalability（FGS）, scalable coding, multi-view, stereo video