什么是视频对象VO？引入VO概念有何优点？ -题库考试答案搜索网

什么是视频对象VO？引入VO概念有何优点？

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2022-01-21 15:06

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正确答案

MPEG-4中视频对象（VO）的含义比较广泛，指用户可访问和处理的实体，其构成依赖于具体的应用环境。如果VO是一帧，则其编码方式与以往标准兼容。为了支持基于内容的交互性，对于基于内容的检索等应用，VO可能是场景中的某个目标。在其它的场合，VO甚至可能是计算机产生的图像。VO的生存期是一个镜头。MPEG4首先对视频序列进行镜头切分，对一个镜头中的每一帧进行物体分割，得到各个VO。VO的表示包括上面提到的三种信息序列。

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