CAJ | 학술논문

分析了MPEG-2的编码结构,提出在压缩域上直接提取I帧,克服了传统视频检索算法先解压视频文件再进行处理的缺陷.然后利用I帧的DC系数进行信息系统建模,通过RS的属性约简理论对I帧约简得到反映镜头主要内容的关键帧,之后对关键帧的DC系数进一步建模,根据帧的差异度得到相应镜头的分类,由此将同类镜头的I帧聚合得到场景摘要,从而获得视频的场景摘要.
분석료MPEG-2적편마결구,제출재압축역상직접제취I정,극복료전통시빈검색산법선해압시빈문건재진행처리적결함.연후이용I정적DC계수진행신식계통건모,통과RS적속성약간이론대I정약간득도반영경두주요내용적관건정,지후대관건정적DC계수진일보건모,근거정적차이도득도상응경두적분류,유차장동류경두적I정취합득도장경적요,종이획득시빈적장경적요.
MPEG-2 coding structure is analyzed and the scene Abstract synthesis algorithm directly extracting I-frame in the compressed domain is put forward,which overcomes the flaws of traditional video retrieval algorithm that extracts the video first and then process.The video scene Abstract was obtained by the following steps： construct information system modeling with the DC coefficience of I-frame;get the key frame reflecting the main content of shot through the attributing reduction theory of R S;construct the model of DC coefficience of key frames;obtain the classification of the corresponding shot according to the differences of key frames and thus the I-frame of the same classified shots are synthesized to get the scene Abstract.