2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698)最新文献_第2页

Invertible deinterlacing with variable coefficients and its lifting implementation 变系数可逆去隔行法及其提升实现

2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698) Pub Date : 2003-07-06 DOI: 10.1109/ICME.2003.1221277

T. Ishida, S. Muramatsu, H. Kikuchi, T. Kuge

引用次数: 9

Using computer vision to generate customized spatial audio 使用计算机视觉生成定制的空间音频

2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698) Pub Date : 2003-07-06 DOI: 10.1109/ICME.2003.1221247

Ankur Mohan, R. Duraiswami, D. Zotkin, D. DeMenthon, L. Davis

{"title":"Using computer vision to generate customized spatial audio","authors":"Ankur Mohan, R. Duraiswami, D. Zotkin, D. DeMenthon, L. Davis","doi":"10.1109/ICME.2003.1221247","DOIUrl":"https://doi.org/10.1109/ICME.2003.1221247","url":null,"abstract":"Creating high quality virtual spatial audio over headphones requires real-time head tracking, personalized head-related transfer functions (HRTFs) and customized room response models. While there are expensive solutions to address these issues based on costly head trackers, measured personalized HRTFs and room responses, these are not suitable for widespread or easy deployment and use. We report on the development of a system that uses computer vision to produce customizable models for both the HRTF and the room response, and to achieve head-tracking. The system uses relatively inexpensive cameras and widely available personal computers. Computer-vision based anthropometric measurements of the head, torso, and the external ears are used for HRTF customization. For low-frequency HRTF customization we employ a simple head-and-torso model developed recently [V. R. Algazi et al., 2002]. For high frequency customization we employ measured pinna characteristics as an index into a database of HRTFs [D. N. Zotkin et al., 2002]. For head tracking we employ an online implementation of the POSIT algorithm [D. DeMenthon and L. Davis, 1995] along with active markers to compute head pose in real-time. The system provides an enhanced virtual listening experience at low cost.","PeriodicalId":118560,"journal":{"name":"2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122983329","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: 14

A programmable, high performance vector array unit used for real-time motion estimation 一个可编程的，高性能的矢量阵列单元，用于实时运动估计

2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698) Pub Date : 2003-07-06 DOI: 10.1109/ICME.2003.1220868

Nikolaos Bellas, Malcolm Dwyer

引用次数: 1

A scalable virtual programmable real-time testbed for rapid multimedia service creation and evaluation 一个可扩展的虚拟可编程实时测试平台，用于快速创建和评估多媒体服务

2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698) Pub Date : 2003-07-06 DOI: 10.1109/ICME.2003.1221297

Christian Bachmeir, P. Tabery, Serdar Uzumcu, E. Steinbach

{"title":"A scalable virtual programmable real-time testbed for rapid multimedia service creation and evaluation","authors":"Christian Bachmeir, P. Tabery, Serdar Uzumcu, E. Steinbach","doi":"10.1109/ICME.2003.1221297","DOIUrl":"https://doi.org/10.1109/ICME.2003.1221297","url":null,"abstract":"In this paper we describe a new flexible and universally applicable testbed for Internet-based multimedia applications. Our approach combines the technology of programmable networks with emulated network environments and delivers a virtual programmable testbed (VPT). In this work we show that a VPT is well suited for rapid creation and evaluation of distributed multimedia applications. There are three advantages of our approach compared to previously proposed testbed solutions: first, the software for processing IP datagrams, so called atomic modules, only depends on the programmable platform deployed, making it reusable. Second, loading several atomic modules concurrently allows the easy setup of customized test environments, e.g., channel models. Third, the application being developed can be tested under various network conditions (failures, congestion, etc.) at an early stage. Based on our VPT, distributed multimedia services can be created and evaluated both fast and economically in emulated environments without expensive and complex hardware setup.","PeriodicalId":118560,"journal":{"name":"2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114499326","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: 3

Quality of service controlled adaptive video-coding over IEEE 802.11 wireless links 通过IEEE 802.11无线链路控制自适应视频编码的服务质量

2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698) Pub Date : 2003-07-06 DOI: 10.1109/ICME.2003.1220886

J. Taal, I. Haratcherev, K. Langendoen, R. Lagendijk

引用次数: 5

Real-time sound localization using field-programmable gate arrays 实时声音定位使用现场可编程门阵列

2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698) Pub Date : 2003-07-06 DOI: 10.1109/ICME.2003.1221745

Duy Cuong Nguyen, P. Aarabi, A. Sheikholeslami

引用次数: 20

An improved parallel architecture fro MPEG-4 motion estimation in 3G mobile applications 3G移动应用中MPEG-4运动估计的改进并行架构

2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698) Pub Date : 2003-07-06 DOI: 10.1109/ICME.2003.1221343

Donglai Xu, Rui Gao, H. Batatia

引用次数: 0

8-bit partial sums of 16 luminance values for fast block motion estimation 用于快速块运动估计的16个亮度值的8位部分和

2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698) Pub Date : 2003-07-06 DOI: 10.1109/ICME.2003.1221011

C. Duanmu, M. Ahmad, M. Swamy

引用次数: 2

A new congestion control algorithm for layered multicast in heterogeneous multimedia dissemination 一种新的异构多媒体传播分层组播拥塞控制算法

2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698) Pub Date : 2003-07-06 DOI: 10.1109/ICME.2003.1221671

Qiang Liu, Jenq-Neng Hwang

引用次数: 11

The security flaws in some authentication watermarking schemes 一些认证水印方案的安全缺陷

2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698) Pub Date : 2003-07-06 DOI: 10.1109/ICME.2003.1221661

Yongdong Wu, F. Bao, Changsheng Xu

{"title":"The security flaws in some authentication watermarking schemes","authors":"Yongdong Wu, F. Bao, Changsheng Xu","doi":"10.1109/ICME.2003.1221661","DOIUrl":"https://doi.org/10.1109/ICME.2003.1221661","url":null,"abstract":"Watermarking technology was originally proposed for copyright protection. Recently it has been applied to media authentication so that a proof of authenticity is inserted into the media instead of being appended to the media as a separated attachment. However, security requirements of the authentication are overlooked in some authentication watermark schemes. In this paper we analyze three authentication watermarking schemes and point out their security flaws. The first scheme is the color authentication scheme in [S.C. Byun et al., 2002]. The scheme is not secure in the sense that as long as an attacker obtains one authenticated image, he is able to forge authentic images without the secret key. The second scheme [Ping Wah Wing, et al., 2001] is an authentication scheme but it is extended for ownership incorrectly. The third one, the robust invertible watermarking scheme [J. Friedrich et al., 2002], employs a multiple of secret random sequences to produce a watermark. However these sequences are independent of the original images, i.e., they remain invariable for different images. An adversary, having sufficient number of original images, can reconstruct the secret sequences by solving simultaneous equations. With these reconstructed sequences, the attacker can forge authentic image freely. The attack can be thwarted with content related sequences generated from both the secret key and the original image.","PeriodicalId":118560,"journal":{"name":"2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124768486","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: 3