Pub Date : 2002-11-07DOI: 10.1109/VIPROM.2002.1026687
T. Peter, S. Michal
Satellite systems play significant task in the telecommunications infrastructure. They can interconnect various remote geographical areas or deliver multimedia services to many geographically dispersed and outlying "islands". Unfortunately, the satellite systems suffer from some drawbacks which influence data transmission. That is why it is necessary to simulate performance of various current and future protocols planned to use for data transmission on the satellite channel. This contribution introduces a product we made for simulation of the satellite environment on LAN.
{"title":"Simulation of GEO satellite on LAN","authors":"T. Peter, S. Michal","doi":"10.1109/VIPROM.2002.1026687","DOIUrl":"https://doi.org/10.1109/VIPROM.2002.1026687","url":null,"abstract":"Satellite systems play significant task in the telecommunications infrastructure. They can interconnect various remote geographical areas or deliver multimedia services to many geographically dispersed and outlying \"islands\". Unfortunately, the satellite systems suffer from some drawbacks which influence data transmission. That is why it is necessary to simulate performance of various current and future protocols planned to use for data transmission on the satellite channel. This contribution introduces a product we made for simulation of the satellite environment on LAN.","PeriodicalId":223771,"journal":{"name":"International Symposium on VIPromCom Video/Image Processing and Multimedia Communications","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123323923","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}
Pub Date : 2002-11-07DOI: 10.1109/VIPROM.2002.1026655
R. Vargic
In this paper we construct a new type of directional wavelet transform based on the lifting scheme and quincunx sampling. Based on known separable wavelet predictors we build nonseparable 2D wavelet predictors with directional properties. As example we use the resulting wavelet transform for image compression for motion blurred images.
{"title":"An approach to directional wavelet construction and their use for image compression","authors":"R. Vargic","doi":"10.1109/VIPROM.2002.1026655","DOIUrl":"https://doi.org/10.1109/VIPROM.2002.1026655","url":null,"abstract":"In this paper we construct a new type of directional wavelet transform based on the lifting scheme and quincunx sampling. Based on known separable wavelet predictors we build nonseparable 2D wavelet predictors with directional properties. As example we use the resulting wavelet transform for image compression for motion blurred images.","PeriodicalId":223771,"journal":{"name":"International Symposium on VIPromCom Video/Image Processing and Multimedia Communications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122826268","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}
Pub Date : 2002-11-07DOI: 10.1109/VIPROM.2002.1026629
Milog Oravec
An original method of feature extraction from image data is introduced using MLP (multilayer perceptron) and PCA (principal component analysis). This method is used in a human face recognition system and results are compared to a face recognition system using PCA directly and to a system with direct classification of input images by MLP.
{"title":"PCA applied to neural internal representation of input data - application to face recognition","authors":"Milog Oravec","doi":"10.1109/VIPROM.2002.1026629","DOIUrl":"https://doi.org/10.1109/VIPROM.2002.1026629","url":null,"abstract":"An original method of feature extraction from image data is introduced using MLP (multilayer perceptron) and PCA (principal component analysis). This method is used in a human face recognition system and results are compared to a face recognition system using PCA directly and to a system with direct classification of input images by MLP.","PeriodicalId":223771,"journal":{"name":"International Symposium on VIPromCom Video/Image Processing and Multimedia Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129417463","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}
Pub Date : 2002-11-07DOI: 10.1109/VIPROM.2002.1026678
Ben-Zion Shaick, L. Yaroslavsky
The problem addressed is that of the fast generation of accurate multiple downscaled copies of an input image, with an arbitrary non-integer reduction factor, for object detection and recognition. Three algorithms that can be implemented in parallel, recursive and hybrid architectures are introduced and compared in terms of their accuracy and computational complexity. It is shown that the recursive algorithm is the most advantageous in terms of computational complexity, while the parallel algorithm performs better in terms of accuracy reduction. The hybrid algorithm combines advantages of both.
{"title":"Image reduction for object recognition","authors":"Ben-Zion Shaick, L. Yaroslavsky","doi":"10.1109/VIPROM.2002.1026678","DOIUrl":"https://doi.org/10.1109/VIPROM.2002.1026678","url":null,"abstract":"The problem addressed is that of the fast generation of accurate multiple downscaled copies of an input image, with an arbitrary non-integer reduction factor, for object detection and recognition. Three algorithms that can be implemented in parallel, recursive and hybrid architectures are introduced and compared in terms of their accuracy and computational complexity. It is shown that the recursive algorithm is the most advantageous in terms of computational complexity, while the parallel algorithm performs better in terms of accuracy reduction. The hybrid algorithm combines advantages of both.","PeriodicalId":223771,"journal":{"name":"International Symposium on VIPromCom Video/Image Processing and Multimedia Communications","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128403977","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}
Pub Date : 2002-11-07DOI: 10.1109/VIPROM.2002.1026618
R. Schafer
It is generally agreed that video conferencing today is limited in its support of natural human-centered communication. Body postures and subtle movement, gaze direction, room acoustics, and joint object/data interactions are often misrepresented, lacking, or wholly absent within these systems. To obviate these shortcomings, a so-called immersive teleconferencing system is being developed at HHI within the German ITI project and in cooperation with the IST project VIRTUE. Following the principle of a shared table, it subtends a class of teleconferencing systems enabling conferees located in different geographical places to meet around a virtual table, appearing at each station in such a way as to create a convincing impression of presence. This system enables the participants to make use of rich communication modalities as similar as possible to those used in a face-to-face meeting (e.g., gestures, eye contact, realistic images, correct sound direction, etc.). The author presents the following topics: state-of-the-art in video conferencing; the shared table approach; 3D image analysis and synthesis; image and disparity coding; architecture of the conference table; conclusions and outlook.
{"title":"Image processing and coding for an immersive teleconferencing system","authors":"R. Schafer","doi":"10.1109/VIPROM.2002.1026618","DOIUrl":"https://doi.org/10.1109/VIPROM.2002.1026618","url":null,"abstract":"It is generally agreed that video conferencing today is limited in its support of natural human-centered communication. Body postures and subtle movement, gaze direction, room acoustics, and joint object/data interactions are often misrepresented, lacking, or wholly absent within these systems. To obviate these shortcomings, a so-called immersive teleconferencing system is being developed at HHI within the German ITI project and in cooperation with the IST project VIRTUE. Following the principle of a shared table, it subtends a class of teleconferencing systems enabling conferees located in different geographical places to meet around a virtual table, appearing at each station in such a way as to create a convincing impression of presence. This system enables the participants to make use of rich communication modalities as similar as possible to those used in a face-to-face meeting (e.g., gestures, eye contact, realistic images, correct sound direction, etc.). The author presents the following topics: state-of-the-art in video conferencing; the shared table approach; 3D image analysis and synthesis; image and disparity coding; architecture of the conference table; conclusions and outlook.","PeriodicalId":223771,"journal":{"name":"International Symposium on VIPromCom Video/Image Processing and Multimedia Communications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128516459","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}
Pub Date : 2002-11-07DOI: 10.1109/VIPROM.2002.1026699
J. López-Ardao, C. López, A. Gil, R. Díaz, A. Fernandez, M. Fernandez, A. Suarez, J. Muñoz
The growth of interactive digital TV heralds a seamless convergence of media, telecommunications, and information technology, offering viewers increasingly exciting and interactive programming. The need of standardization in this field led DVB to head the regulator project, defining standards for digital video broadcasting and interactive services in all transmission networks, and recently for a generic common interface (the MHP API) to enable interoperable applications to be downloaded from broadcast networks and executed on receivers with specific hardware and software implementations from any manufacturer. The software architecture of a MHP receiver consists of a multitask real-time OS that gives support to the middleware below the MHP API. This middleware consists of an application manager, the communications protocol stack and a Java VM together with suitable API. Conventional implementations of MHP receivers use a proprietary OS. In this paper, we present our experience implementing a prototype based on an open platform over RT-Linux.
{"title":"Experiences from implementing a MHP receiver","authors":"J. López-Ardao, C. López, A. Gil, R. Díaz, A. Fernandez, M. Fernandez, A. Suarez, J. Muñoz","doi":"10.1109/VIPROM.2002.1026699","DOIUrl":"https://doi.org/10.1109/VIPROM.2002.1026699","url":null,"abstract":"The growth of interactive digital TV heralds a seamless convergence of media, telecommunications, and information technology, offering viewers increasingly exciting and interactive programming. The need of standardization in this field led DVB to head the regulator project, defining standards for digital video broadcasting and interactive services in all transmission networks, and recently for a generic common interface (the MHP API) to enable interoperable applications to be downloaded from broadcast networks and executed on receivers with specific hardware and software implementations from any manufacturer. The software architecture of a MHP receiver consists of a multitask real-time OS that gives support to the middleware below the MHP API. This middleware consists of an application manager, the communications protocol stack and a Java VM together with suitable API. Conventional implementations of MHP receivers use a proprietary OS. In this paper, we present our experience implementing a prototype based on an open platform over RT-Linux.","PeriodicalId":223771,"journal":{"name":"International Symposium on VIPromCom Video/Image Processing and Multimedia Communications","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128585350","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}
Pub Date : 2002-11-07DOI: 10.1109/VIPROM.2002.1026657
G. Rozinaj, S. Herrera, J. Mikula
BTC (block truncation coding) codes and their variations are lost-block codes often used in narrowband systems with a lower sensitivity for transported picture impairment. Our preferred modification of these codes goes to better compression with a very low picture impairment against original BTC methods. The modification uses the convenience of low-level changes of successive pictures, which are inserted into the "difference byte". In this way the whole level need not be transported. In the case of big differences between levels, this code uses nonlinear quantisation for the level differences and it brings approximate capacity decrease of 30%.
{"title":"Modified BTC algorithm for satellite image coding","authors":"G. Rozinaj, S. Herrera, J. Mikula","doi":"10.1109/VIPROM.2002.1026657","DOIUrl":"https://doi.org/10.1109/VIPROM.2002.1026657","url":null,"abstract":"BTC (block truncation coding) codes and their variations are lost-block codes often used in narrowband systems with a lower sensitivity for transported picture impairment. Our preferred modification of these codes goes to better compression with a very low picture impairment against original BTC methods. The modification uses the convenience of low-level changes of successive pictures, which are inserted into the \"difference byte\". In this way the whole level need not be transported. In the case of big differences between levels, this code uses nonlinear quantisation for the level differences and it brings approximate capacity decrease of 30%.","PeriodicalId":223771,"journal":{"name":"International Symposium on VIPromCom Video/Image Processing and Multimedia Communications","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121966079","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}
Pub Date : 2002-11-07DOI: 10.1109/VIPROM.2002.1026693
C. Serrão, J. Marques
Electronic trading of multimedia content faces today important challenges. One of the most important challenges refers to the lack of production methodologies with strong interactions with the current state of the art digital content protection tools. This paper proposes a methodology, especially useful in the field of still digital images that interconnects a digital image production pipeline with coherent protection mechanisms building a framework for a digital rights management solution.
{"title":"DIGIPIPE - a pipeline methodology for digital image production and protection","authors":"C. Serrão, J. Marques","doi":"10.1109/VIPROM.2002.1026693","DOIUrl":"https://doi.org/10.1109/VIPROM.2002.1026693","url":null,"abstract":"Electronic trading of multimedia content faces today important challenges. One of the most important challenges refers to the lack of production methodologies with strong interactions with the current state of the art digital content protection tools. This paper proposes a methodology, especially useful in the field of still digital images that interconnects a digital image production pipeline with coherent protection mechanisms building a framework for a digital rights management solution.","PeriodicalId":223771,"journal":{"name":"International Symposium on VIPromCom Video/Image Processing and Multimedia Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131135342","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}
Pub Date : 2002-11-07DOI: 10.1109/VIPROM.2002.1026658
T. Karlubíková, J. Polec, J. Pavlovičová, M. Kováčiková
This paper presents a new scheme for lossless image coding with SCAN image data scanning (Maniccam et al. (2001)). A methodology for creation of a convenient space-filling curve based on correlation is introduced.
本文提出了一种利用SCAN图像数据扫描进行无损图像编码的新方案(Maniccam et al.(2001))。介绍了一种基于相关性的方便空间填充曲线的生成方法。
{"title":"SCAN methodology optimization based on correlation","authors":"T. Karlubíková, J. Polec, J. Pavlovičová, M. Kováčiková","doi":"10.1109/VIPROM.2002.1026658","DOIUrl":"https://doi.org/10.1109/VIPROM.2002.1026658","url":null,"abstract":"This paper presents a new scheme for lossless image coding with SCAN image data scanning (Maniccam et al. (2001)). A methodology for creation of a convenient space-filling curve based on correlation is introduced.","PeriodicalId":223771,"journal":{"name":"International Symposium on VIPromCom Video/Image Processing and Multimedia Communications","volume":"05 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129088346","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}
Pub Date : 2002-11-07DOI: 10.1109/VIPROM.2002.1026620
P. Cristea
An original tetrahedral representation of the genetic code (GC) is presented. It is shown that the dimensionality of the genomic signal representation can be reduced by projecting the genetic code tetrahedron on an adequately oriented plane, leading to the complex representations of the GC. On these bases, optimal symbolic-to-digital mappings of the linear, one-dimensional and one-directional strands of nucleic acids into complex genomic signals are derived at nucleotide, codon and amino acid levels. By converting the sequences of nucleotides and polypeptides into digital genomic signals, this approach offers the possibility of using a large variety of signal processing methods for their processing and analysis.
{"title":"Complex genomic signals","authors":"P. Cristea","doi":"10.1109/VIPROM.2002.1026620","DOIUrl":"https://doi.org/10.1109/VIPROM.2002.1026620","url":null,"abstract":"An original tetrahedral representation of the genetic code (GC) is presented. It is shown that the dimensionality of the genomic signal representation can be reduced by projecting the genetic code tetrahedron on an adequately oriented plane, leading to the complex representations of the GC. On these bases, optimal symbolic-to-digital mappings of the linear, one-dimensional and one-directional strands of nucleic acids into complex genomic signals are derived at nucleotide, codon and amino acid levels. By converting the sequences of nucleotides and polypeptides into digital genomic signals, this approach offers the possibility of using a large variety of signal processing methods for their processing and analysis.","PeriodicalId":223771,"journal":{"name":"International Symposium on VIPromCom Video/Image Processing and Multimedia Communications","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132015496","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}
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