2005 IEEE 7th Workshop on Multimedia Signal Processing最新文献_第4页

Low-Complexity Adaptive Streaming via Optimized A Priori Media Pruning 基于优化先验媒体剪枝的低复杂度自适应流

2005 IEEE 7th Workshop on Multimedia Signal Processing Pub Date : 2005-10-01 DOI: 10.1109/MMSP.2005.248610

Jacob Chakareski, P. Frossard

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引用次数: 11

An Autonomous Dance Scoring System Using Marker-based Motion Capture 使用基于标记的动作捕捉的自主舞蹈评分系统

2005 IEEE 7th Workshop on Multimedia Signal Processing Pub Date : 2005-10-01 DOI: 10.1109/MMSP.2005.248666

Huayue Chen, G. Qian, J. James

引用次数: 18

Enhanced Video Stream Switching Schemes for H.264 H.264增强的视频流交换方案

2005 IEEE 7th Workshop on Multimedia Signal Processing Pub Date : 2005-10-01 DOI: 10.1109/MMSP.2005.248597

Xiaosong Zhou, C.-C. Jay Kuo

{"title":"Enhanced Video Stream Switching Schemes for H.264","authors":"Xiaosong Zhou, C.-C. Jay Kuo","doi":"10.1109/MMSP.2005.248597","DOIUrl":"https://doi.org/10.1109/MMSP.2005.248597","url":null,"abstract":"Two enhanced video stream switching schemes for H.264 are proposed aiming at prompt switching among compressed video streams coded at different quality levels and bit rates. The stream switching scheme using primary and secondary SP/SI pictures in H.264 is effective in switching, but degrades the compression efficiency of the transmitted stream even if the switching operation does not take place. In the two proposed schemes, no modification is made to the original compressed streams (namely, no primary SP picture is adopted) so that compression efficiency is maintained at switching points. As a result, switching points can be assigned flexibly in our enhanced schemes according to the need of applications and network conditions without worrying about the bit rate overhead. When switching occurs, the proposed schemes use a new picture type-DIFF (difference picture) in different ways to compensate the mismatch of reference frames. The first proposed scheme is designed to simplify the implementation while the second scheme is designed to further reduce the bit rate overhead. It is shown by experimental results that both of the proposed schemes outperform the switching scheme defined in H.264 and they are able to realize prompt stream switching without noticeable quality degradation and have a small bit rate overhead only when the actual switching operation occurs","PeriodicalId":191719,"journal":{"name":"2005 IEEE 7th Workshop on Multimedia Signal Processing","volume":"207 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122321024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Attentive Behavior Detection by Non-Linear Head Pose Embedding and Mapping 非线性头部姿态嵌入与映射的注意行为检测

2005 IEEE 7th Workshop on Multimedia Signal Processing Pub Date : 2005-10-01 DOI: 10.1109/MMSP.2005.248585

Nan Hu, Weimin Huang

引用次数: 4

Characterization of Error Diffusion Halftone Images based on Subband Decompostion 基于子带分解的误差扩散半色调图像表征

2005 IEEE 7th Workshop on Multimedia Signal Processing Pub Date : 2005-10-01 DOI: 10.1109/MMSP.2005.248576

Hua Fang, Xiqun Lu

引用次数: 2

Music Identification Using Embedded HMM 使用嵌入式HMM的音乐识别

2005 IEEE 7th Workshop on Multimedia Signal Processing Pub Date : 2005-10-01 DOI: 10.1109/MMSP.2005.248550

Kai Chen, Sheng Gao, Peiqi Chai, Qibin Sun

引用次数: 2

Rate Control Based on Zero-Residue Pre-Selection for Video Transcoding 基于零残差预选的视频转码速率控制

2005 IEEE 7th Workshop on Multimedia Signal Processing Pub Date : 2005-10-01 DOI: 10.1109/MMSP.2005.248628

C. Ho, O. Au, S. Chan, H. Wong, S. Yip

{"title":"Rate Control Based on Zero-Residue Pre-Selection for Video Transcoding","authors":"C. Ho, O. Au, S. Chan, H. Wong, S. Yip","doi":"10.1109/MMSP.2005.248628","DOIUrl":"https://doi.org/10.1109/MMSP.2005.248628","url":null,"abstract":"A common issue in video transcoding for heterogeneous network environment is to efficiently and accurately reduce the bit-rate such that the distortion is minimized under a given rate constraint. To convert the bit-rate of an encoded video to match the channel capacity, in general, re-quantization is done on the DCT coefficients with larger quantization step size. Most existing rate control algorithms for video transcoding in the literature calculate quantization parameters (QPs) of macroblocks (MBs) based on a relationship between certain properties of coded video and bit-rate. They reduce the computational complexity by simplifying the R-D model and reusing the statistics information of input video. In this paper, we propose a zero-residue pre-selection (ZRPS) mechanism to select only a portion of MBs to apply the rate control in video transcoding. TMN-8 is used to evaluate the impact of ZRPS. Experimental results show that, as compared to the original TMN-8 rate control scheme, TMN-8 with ZRPS achieves up to 1.60 dB gain, in term of PSNR, and requires less than 50% of the computational complexity compared to TMN-8, depending on the characteristics of the video content","PeriodicalId":191719,"journal":{"name":"2005 IEEE 7th Workshop on Multimedia Signal Processing","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116987465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Detecting Interlaced or Progressive Source of Video 检测隔行或递进的视频源

2005 IEEE 7th Workshop on Multimedia Signal Processing Pub Date : 2005-10-01 DOI: 10.1109/MMSP.2005.248555

S. Keller, K. S. Pedersen, F. Lauze

引用次数: 3

Spectral Images and Features Co-Clustering with Application to Content-based Image Retrieval 光谱图像与特征协同聚类及其在基于内容的图像检索中的应用

2005 IEEE 7th Workshop on Multimedia Signal Processing Pub Date : 2005-10-01 DOI: 10.1109/MMSP.2005.248647

Jian Guan, G. Qiu, X. Xue

引用次数: 14

Personalized Unit Selection for an Image-based Facial Animation System 基于图像的面部动画系统的个性化单元选择

2005 IEEE 7th Workshop on Multimedia Signal Processing Pub Date : 2005-10-01 DOI: 10.1109/MMSP.2005.248608

Axel Weissenfeld, Kang Liu, S. Klomp, J. Ostermann

引用次数: 9