in order to support content-based functions in the object-based visual standard of mpeg-4, each frame of video sequences should be represented in terms of video object planes ( vop " s ) 在mpeg-4視頻編碼標(biāo)準(zhǔn)中,為了實(shí)現(xiàn)基于視頻內(nèi)容的交互功能,其視頻序列的每一幀由視頻對(duì)象面(vop)來表示。