{"title":"三维子带VLBR视频编码方案","authors":"K. Ngan, W. L. Chooi","doi":"10.1109/ICCS.1994.474301","DOIUrl":null,"url":null,"abstract":"A video coder for very low bit rate applications is designed and simulated. It employs a subband analysis technique to first split the video signal into four temporal subbands. Motion detection is performed to classify the co-sited macroblocks of the subbands into temporal activity (TA) macroblocks or no temporal activity (NTA) macroblocks. The base temporal subband is coded using a H.261-like (European COST 211 ter SIM3) coder with the motion estimation replaced by a reduced-motion search algorithm. The higher temporal subbands are vector-quantized. The NTA-macroblocks (except in the baseband) are not coded at all. Simulation results are presented at 9.6 kbits/s at five frames per second for a typical videoconferencing sequence. Comparisons are made with results obtained by the SIM3 coder.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"75 1-4","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"3D subband VLBR video coding scheme\",\"authors\":\"K. Ngan, W. L. Chooi\",\"doi\":\"10.1109/ICCS.1994.474301\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A video coder for very low bit rate applications is designed and simulated. It employs a subband analysis technique to first split the video signal into four temporal subbands. Motion detection is performed to classify the co-sited macroblocks of the subbands into temporal activity (TA) macroblocks or no temporal activity (NTA) macroblocks. The base temporal subband is coded using a H.261-like (European COST 211 ter SIM3) coder with the motion estimation replaced by a reduced-motion search algorithm. The higher temporal subbands are vector-quantized. The NTA-macroblocks (except in the baseband) are not coded at all. Simulation results are presented at 9.6 kbits/s at five frames per second for a typical videoconferencing sequence. Comparisons are made with results obtained by the SIM3 coder.<<ETX>>\",\"PeriodicalId\":158681,\"journal\":{\"name\":\"Proceedings of ICCS '94\",\"volume\":\"75 1-4\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1994-11-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of ICCS '94\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICCS.1994.474301\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of ICCS '94","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICCS.1994.474301","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
摘要
设计并仿真了一种适用于极低比特率应用的视频编码器。它采用子带分析技术，首先将视频信号分成四个时间子带。通过运动检测将子带的共位宏块分为时间活动(TA)宏块和无时间活动(NTA)宏块。基本时间子带使用类似h .261(欧洲COST 211 ter SIM3)编码器编码，运动估计被减少运动搜索算法取代。较高的时间子带是矢量量化的。nta宏块(基带除外)根本没有编码。对典型的视频会议序列以9.6 kbits/s、5帧/秒的速度进行了仿真。与SIM3编码器得到的结果进行了比较
A video coder for very low bit rate applications is designed and simulated. It employs a subband analysis technique to first split the video signal into four temporal subbands. Motion detection is performed to classify the co-sited macroblocks of the subbands into temporal activity (TA) macroblocks or no temporal activity (NTA) macroblocks. The base temporal subband is coded using a H.261-like (European COST 211 ter SIM3) coder with the motion estimation replaced by a reduced-motion search algorithm. The higher temporal subbands are vector-quantized. The NTA-macroblocks (except in the baseband) are not coded at all. Simulation results are presented at 9.6 kbits/s at five frames per second for a typical videoconferencing sequence. Comparisons are made with results obtained by the SIM3 coder.<>
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