IEEE International Conference on Image Processing 2005最新文献

The tie-zone watershed: definition, algorithm and applications 结合区分水岭:定义、算法及应用

IEEE International Conference on Image Processing 2005 Pub Date : 2005-12-19 DOI: 10.1109/ICIP.2005.1530140

Romaric Audigier, R. Lotufo, M. Couprie

引用次数: 19

An adaptive linear system framework for image distortion analysis 一种用于图像失真分析的自适应线性系统框架

IEEE International Conference on Image Processing 2005 Pub Date : 2005-12-01 DOI: 10.1109/ICIP.2005.1530603

Zhou Wang, Eero P. Simoncelli

引用次数: 43

Visual data rate gain for wavelet foveated image coding 小波注视点图像编码的视觉数据速率增益

IEEE International Conference on Image Processing 2005 Pub Date : 2005-12-01 DOI: 10.1109/ICIP.2005.1530323

Hyungkeuk Lee, Sanghoon Lee

引用次数: 5

Natural contrast statistics and the selection of visual fixations 自然对比统计和视觉注视点的选择

IEEE International Conference on Image Processing 2005 Pub Date : 2005-12-01 DOI: 10.1109/ICIP.2005.1530601

R. Raj, W. Geisler, Robert A. Frazor, A. Bovik

引用次数: 6

HMM-based motion recognition system using segmented PCA 基于hmm的分段PCA运动识别系统

IEEE International Conference on Image Processing 2005 Pub Date : 2005-12-01 DOI: 10.1109/ICIP.2005.1530635

F. Bashir, Wei Qu, A. Khokhar, D. Schonfeld

引用次数: 77

Cross-layer design for delay-constrained error-resilient video communications over wireless ad-hoc networks 无线自组织网络上延迟约束容错视频通信的跨层设计

IEEE International Conference on Image Processing 2005 Pub Date : 2005-12-01 DOI: 10.1109/ICIP.2005.1530493

Q. Qu, Y. Pei, J. Modestino, Xusheng Tian, Bin Wang

{"title":"Cross-layer design for delay-constrained error-resilient video communications over wireless ad-hoc networks","authors":"Q. Qu, Y. Pei, J. Modestino, Xusheng Tian, Bin Wang","doi":"10.1109/ICIP.2005.1530493","DOIUrl":"https://doi.org/10.1109/ICIP.2005.1530493","url":null,"abstract":"For video communications over wireless ad-hoc networks, there are fundamentally two different kinds of packet losses: packet losses due to channel over-pumping, where the operating transmission rate is higher than the prevailing channel capacity, and packet losses due to transmission errors. To eliminate the first kind of packet losses, rate-control is necessary in order to adapt to the time-varying channel capacity. For the second kind of packet losses, error-resilient coding techniques should be used. In this paper, we propose a cross-layer rate-control scheme based on an analytical study of how the effective video transmission rate is affected by the prevailing operating parameters. Furthermore, in order to provide error-resilient real-time video delivery over such wireless ad-hoc networks, a cross-layer delay-constrained joint source-channel coding (JSCC) approach, to be used in conjunction with rate-control, is proposed and investigated. Simulation results demonstrate the effectiveness of this combination of cross-layer rate-control and delay-constrained JSCC for supporting error-resilient video delivery over wireless ad-hoc networks operating under a delay constraint.","PeriodicalId":295452,"journal":{"name":"IEEE International Conference on Image Processing 2005","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132072598","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: 5

On the bandlimitedness of the plenoptic function 关于全视函数的带宽限制

IEEE International Conference on Image Processing 2005 Pub Date : 2005-12-01 DOI: 10.1109/ICIP.2005.1530317

M. Do, Davy Marchand-Maillet, M. Vetterli

引用次数: 19

An area-efficient and high-throughput de-blocking filter for multi-standard video applications 一种适用于多标准视频应用的面积高效和高吞吐量去阻塞滤波器

IEEE International Conference on Image Processing 2005 Pub Date : 2005-12-01 DOI: 10.1109/ICIP.2005.1530574

Tsu-Ming Liu, Wen-Ping Lee, Chen-Yi Lee

引用次数: 7

Source camera identification based on CFA interpolation 基于CFA插值的源摄像机识别

IEEE International Conference on Image Processing 2005 Pub Date : 2005-12-01 DOI: 10.1109/ICIP.2005.1530330

Sevinc Bayram, H. Sencar, N. Memon, I. Avcibas

引用次数: 320

Comparison of MPEG-4 facial animation parameter groups with respect to audio-visual speech recognition performance MPEG-4面部动画参数组在视听语音识别性能方面的比较

IEEE International Conference on Image Processing 2005 Pub Date : 2005-12-01 DOI: 10.1109/ICIP.2005.1530438

Petar S. Aleksic, A. Katsaggelos

{"title":"Comparison of MPEG-4 facial animation parameter groups with respect to audio-visual speech recognition performance","authors":"Petar S. Aleksic, A. Katsaggelos","doi":"10.1109/ICIP.2005.1530438","DOIUrl":"https://doi.org/10.1109/ICIP.2005.1530438","url":null,"abstract":"In this paper, we describe an audio-visual automatic speech recognition (AV-ASR) system that utilizes facial animation parameters (FAPs), supported by the MPEG-4 standard, for the visual representation of speech. We describe the visual feature extraction algorithms used for extracting FAPs, which control outer- and inner-lip movement. Principal component analysis (PCA) is performed on both inner- and outer-lip FAP vector in order to decrease their dimensionality and decorrelate them. The PCA-based projection weights of the extracted FAP vectors are used as visual features. Multi-stream hidden Markov models (HMMs) and a late integration approach are used to integrate audio and visual information and train a continuous AV-ASR system. We compare the performance of the developed AV-ASR system utilizing outer- and inner lip FAPs, individually and jointly. Experiments were performed for different dimensionalities of the visual features, at various SNRs (0-30dB) with additive white Gaussian noise, on a relatively large vocabulary (approximately 1000 words) database. The proposed system reduces the word error rate (WER) by 20% to 23% relatively to audio-only ASR WERs. Conclusions are drawn on the individual and combined effectiveness of the inner- and outer-lip FAPs, the trade off between the dimensionality of the visual features and the amount of speechreading information contained in them and its influence on the AV-ASR performance.","PeriodicalId":295452,"journal":{"name":"IEEE International Conference on Image Processing 2005","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127521160","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