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2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP)最新文献

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KASKADA - Multimedia processing platform architecture KASKADA——多媒体处理平台架构
2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP) Pub Date : 2010-07-26 DOI: 10.5220/0002944800260031
H. Krawczyk, J. Proficz
{"title":"KASKADA - Multimedia processing platform architecture","authors":"H. Krawczyk, J. Proficz","doi":"10.5220/0002944800260031","DOIUrl":"https://doi.org/10.5220/0002944800260031","url":null,"abstract":"The architecture of Context Analysis of the Camera Data Streams for Alert Defining Applications platform (Polish abbreviation: KASKADA, i.e. waterfall), a part of MAYDAY EURO 2012 project, is provided. A new multilayer processing model for multimedia streams is proposed. The model layers: services, computational tasks and processes are described. The composition of complex services with simple service scenario descriptions is presented. An example scenario and its realization in the environment is provided. The object-oriented domain analysis, component and deployment diagrams with their relations to the model are proposed.","PeriodicalId":408116,"journal":{"name":"2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP)","volume":"0160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123209383","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: 19
Arithmetic coding for joint source-channel coding 联合信源信道编码的算术编码
2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP) Pub Date : 2010-07-26 DOI: 10.5220/0002944400050014
Trevor Spiteri, Victor Buttigieg
{"title":"Arithmetic coding for joint source-channel coding","authors":"Trevor Spiteri, Victor Buttigieg","doi":"10.5220/0002944400050014","DOIUrl":"https://doi.org/10.5220/0002944400050014","url":null,"abstract":"This paper presents a joint source-channel coding technique involving arithmetic coding. The work is based on an existing maximum a posteriori (MAP) estimation approach in which a forbidden symbol is introduced into the arithmetic coder to improve error-correction performance. Three improvements to the system are presented: the placement of the forbidden symbol is modified to decrease the delay from the introduction of an error to the detection of the error; the arithmetic decoder is modified for quicker detection by the introduction of a look-ahead technique; and the calculation of the MAP metric is modified for faster error detection. Experimental results show an improvement of up to 0.4 dB for soft decoding and 0.6 dB for hard decoding.","PeriodicalId":408116,"journal":{"name":"2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP)","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115581214","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
Adaptive watermarking of color images in the DCT domain 彩色图像的DCT域自适应水印
2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP) Pub Date : 2010-07-26 DOI: 10.5220/0002895601710177
I. Nasir, Jianmin Jiang, S. Ipson
{"title":"Adaptive watermarking of color images in the DCT domain","authors":"I. Nasir, Jianmin Jiang, S. Ipson","doi":"10.5220/0002895601710177","DOIUrl":"https://doi.org/10.5220/0002895601710177","url":null,"abstract":"This paper presents a new approach of embedding watermarks adaptively in DC components of color images with respect to analysis of the image luminance in the YIQ model or the blue channel in the RGB model. The embedding strength is determined by the classification of DCT blocks, which is simply implemented in the DCT domain via just analyzing the values of two AC coefficients rather than using method such as Sobel, Canny, or Prewitt. Furthermore, a new combination algorithm of both watermark extraction and blind detection is designed, where the watermark is extracted directly in the spatial domain without knowledge of the original image. Experimental results demonstrated that the embedded watermark is robust to the attacks including JPEG-loss compression, JPEG2000, filtering, scaling, small cropping, small rotation-crop and self-similarities attacks.","PeriodicalId":408116,"journal":{"name":"2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123715503","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
DVB-T modulator imperfections evaluation and measurement DVB-T调制器缺陷评估与测量
2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP) Pub Date : 2010-07-26 DOI: 10.5220/0002993200500054
T. Kratochvil, R. Stukavec, M. Slanina
{"title":"DVB-T modulator imperfections evaluation and measurement","authors":"T. Kratochvil, R. Stukavec, M. Slanina","doi":"10.5220/0002993200500054","DOIUrl":"https://doi.org/10.5220/0002993200500054","url":null,"abstract":"The paper deals with simulation, evaluation and measurement of the DVB-T modulator imperfections. Modulator imperfections' and I/Q errors' influence on the DVB-T signal and its spectrum and I/Q constellation analysis are presented. Theoretical backgrounds of the Amplitude Imbalance, Phase Error and Carrier Suppression effects are outlined in the paper. Then the practical results measured in the laboratory environment are compared to the theoretical assumed impacts on Modulation Error Rate from I/Q constellation and Bit Error Rates before and after Viterbi decoding in DVB-T signal decoding. Commented results of the measurements are presented in the paper as well.","PeriodicalId":408116,"journal":{"name":"2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129781406","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
Practical examples of GPU computing optimization principles GPU计算优化原理的实例
2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP) Pub Date : 2010-07-26 DOI: 10.5220/0002990400460049
Patrik Goorts, S. Rogmans, Steven Vanden Eynde, P. Bekaert
{"title":"Practical examples of GPU computing optimization principles","authors":"Patrik Goorts, S. Rogmans, Steven Vanden Eynde, P. Bekaert","doi":"10.5220/0002990400460049","DOIUrl":"https://doi.org/10.5220/0002990400460049","url":null,"abstract":"In this paper, we provide examples to optimize signal processing or visual computing algorithms written for SIMT-based GPU architectures. These implementations demonstrate the optimizations for CUDA or its successors OpenCL and DirectCompute. We discuss the effect and optimization principles of memory coalescing, bandwidth reduction, processor occupancy, bank conflict reduction, local memory elimination and instruction optimization. The effect of the optimization steps are illustrated by state-of-the-art examples. A comparison with optimized and unoptimized algorithms is provided. A first example discusses the construction of joint histograms using shared memory, where optimizations lead to a significant speedup compared to the original implementation. A second example presents convolution and the acquired results.","PeriodicalId":408116,"journal":{"name":"2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129940013","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: 8
A component based integrated system for signal processing of swimming performance 基于组件的游泳比赛信号处理集成系统
2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP) Pub Date : 2010-07-26 DOI: 10.5220/0002943300730079
T. L. Sage, P. Conway, L. Justham, S. Slawson, A. Bindel, A. West
{"title":"A component based integrated system for signal processing of swimming performance","authors":"T. L. Sage, P. Conway, L. Justham, S. Slawson, A. Bindel, A. West","doi":"10.5220/0002943300730079","DOIUrl":"https://doi.org/10.5220/0002943300730079","url":null,"abstract":"Research presented in this paper details the development of an integrated system, which allowed presentation of meaningful data to coaches and their swimmers in a training environment. The integrated system comprised of a wireless sensor node, vision components, a wireless audio communication module and force measurement technologies. A trigger function was implemented onto the sensor node which synchronized all of the components and that allowed relative processing of the data. Filtering approaches and signal processing algorithms were used to allow real-time data analysis on the sensor node.","PeriodicalId":408116,"journal":{"name":"2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117303359","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: 13
Fast edge-guided interpolation of color images 快速边缘引导插值彩色图像
2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP) Pub Date : 2010-07-26 DOI: 10.5220/0002933401030107
Amin Behnad, K. Plataniotis
{"title":"Fast edge-guided interpolation of color images","authors":"Amin Behnad, K. Plataniotis","doi":"10.5220/0002933401030107","DOIUrl":"https://doi.org/10.5220/0002933401030107","url":null,"abstract":"We propose a fast adaptive image interpolation method for still color images which is suitable for real-time applications. The proposed interpolation scheme combines the speed of fast linear image interpolators with advantages of an edge-guided interpolator. A fast and high performance image interpolation technique is proposed to interpolate the luminance channel of low-resolution color images. Since the human visual system is less sensitive to the chrominance channels than the luminance channel, we interpolate the former with the fast method of bicubic interpolation. This hybrid technique achieves high PSNR and superior visual quality by preserving edge structures well while maintaining a low computational complexity. As verified by the simulation results, interpolation artifacts (e.g. blurring, ringing and jaggies) plaguing linear interpolators are noticeably reduced with our method.","PeriodicalId":408116,"journal":{"name":"2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131492808","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: 1
An optimal voting scheme for microaneurysm candidate extractors using simulated annealing 微动脉瘤候选提取器的模拟退火优化投票方案
2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP) Pub Date : 2010-07-26 DOI: 10.5220/0002988000800087
B. Antal, I. Lázár, A. Hajdu
{"title":"An optimal voting scheme for microaneurysm candidate extractors using simulated annealing","authors":"B. Antal, I. Lázár, A. Hajdu","doi":"10.5220/0002988000800087","DOIUrl":"https://doi.org/10.5220/0002988000800087","url":null,"abstract":"In this paper, we present a novel approach to improve microaneurysm candidate extraction in color fundus images. The individual algorithms published so far can be hardly considered in an automatic screening system. To improve further the sensitivity, specificity and image classification rate of microaneurysm detection, we propose an appropriate combination of individual algorithms. Thus, we investigate the detection of microaneurysms through the following phases: first, we use different approaches to extract microaneurysm candidates. Then, we select candidates voted by a sufficient number of the candidate extractor algorithms. The optimal number of votes and participating algorithms are determined by a simulated annealing algorithm. Finally, we classify the candidates with a machine-learning based approach by following the current literature recommendations. Our framework improves the positive likelihood ratio for the microaneurysms and outperforms both the state-of-the-art individual candidate extractors and microaneurysm detectors in these terms.","PeriodicalId":408116,"journal":{"name":"2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128605147","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
Archaeo Viz - a 3D explorative learning environment of reconstructed archaeological sites and cultural artefacts 考古Viz -重建考古遗址和文物的三维探索学习环境
2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP) Pub Date : 2010-07-26 DOI: 10.5220/0002938902110214
I. Paliokas, V. Buda, Iancu Adrian Robert
{"title":"Archaeo Viz - a 3D explorative learning environment of reconstructed archaeological sites and cultural artefacts","authors":"I. Paliokas, V. Buda, Iancu Adrian Robert","doi":"10.5220/0002938902110214","DOIUrl":"https://doi.org/10.5220/0002938902110214","url":null,"abstract":"In this paper, we present an educationally effective software system based on modelling for cultural heritage objects and landscapes of archaeological sites. The low-cost ‘Archaeo Viz’ can be easily applied as an extension to pre-existing museum data management systems. Its main contribution is to strengthen the visualized experience of visitors, support educational activities and enhance the communication between archaeologists, researchers, museum curators and the public. It is a concrete, open and evolving model designed to support case studies based on archaeological complex sites in a game like environment.","PeriodicalId":408116,"journal":{"name":"2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126707876","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: 12
Motion descriptors for semantic video indexing 用于语义视频索引的运动描述符
2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP) Pub Date : 2010-07-26 DOI: 10.5220/0002942601780184
M. Zampoglou, Theophilos Papadimitriou, K. Diamantaras
{"title":"Motion descriptors for semantic video indexing","authors":"M. Zampoglou, Theophilos Papadimitriou, K. Diamantaras","doi":"10.5220/0002942601780184","DOIUrl":"https://doi.org/10.5220/0002942601780184","url":null,"abstract":"Content-based video indexing is a field of rising interest that has achieved significant progress in the recent years. However, it can be retrospectively observed that, while many powerful spatial descriptors have so far been developed, the potential of motion information for the extraction of semantic meaning has been largely left untapped. As part of our effort to automatically classify the archives of a local TV station, we developed a number of motion descriptors aimed at providing meaningful distinctions between different semantic classes. In this paper, we present two descriptors we have used in our past work, combined with a novel motion descriptor inspired by the highly successful Bag-Of-Features methods. We demonstrate the ability of such descriptors to boost classifier performance compared to the exclusive use of spatial features, and discuss the potential formation of even more efficient descriptors for video motion patterns.","PeriodicalId":408116,"journal":{"name":"2010 International Conference on Signal Processing and Multimedia Applications (SIGMAP)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129221037","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
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