Proceedings of the International Conference on Signal Processing and Multimedia Applications最新文献_第3页

Visual AER-based processing with convolutions for a parallel supercomputer 基于视觉aer的并行超级计算机卷积处理

Proceedings of the International Conference on Signal Processing and Multimedia Applications Pub Date : 2011-07-18 DOI: 10.5220/0003519100850090

R. Montero-Gonzalez, Arturo Morgado Estévez, F. Perez-Peña, A. Linares-Barranco, A. Jiménez-Fernandez, B. Linares-Barranco, J. Pérez-Carrasco

{"title":"Visual AER-based processing with convolutions for a parallel supercomputer","authors":"R. Montero-Gonzalez, Arturo Morgado Estévez, F. Perez-Peña, A. Linares-Barranco, A. Jiménez-Fernandez, B. Linares-Barranco, J. Pérez-Carrasco","doi":"10.5220/0003519100850090","DOIUrl":"https://doi.org/10.5220/0003519100850090","url":null,"abstract":"This paper is based on the simulation of a convolution model for multimedia applications using the neuro-inspired Address-Event-Representation (AER) philosophy. AER is a communication mechanism between chips gathering thousands of spiking neurons. These spiking neurons are able to process the visual information in a frame-free style like the human brain do. All the spiking neurons are working in parallel and each of them implement an operation when an input stimulus is received. The result of this operation could be, or not, to produce an output event. There exist AER retinas and other sensors, AER processors (convolvers, WTA filters), learning chips and robot actuators. In this paper we present the implementation of an AER convolution processor for the supercomputer CRS (cluster research support) of the University of Cadiz (UCA). This research involves a test cases design in which the optimal parameters are set to run the AER convolution in parallel processors. These cases consist on running the convolution taking an image divided in different number of parts, applying to each part a Sobel filter for edge detection, and based on the AER-TOOL simulator. Runtimes are compared for all cases and the optimal configuration of the system is discussed. In general, CRS obtain better performances when the image is subdivided than for the whole image processing.","PeriodicalId":103791,"journal":{"name":"Proceedings of the International Conference on Signal Processing and Multimedia Applications","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116942835","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

A genetic approach for improving the side information in Wyner-Ziv video coding with long duration GOP 一种改进长时间GOP的Wyner-Ziv视频编码侧信息的遗传方法

Proceedings of the International Conference on Signal Processing and Multimedia Applications Pub Date : 2011-07-18 DOI: 10.5220/0003526300970103

C. Yaacoub, J. Farah, Chadi Jabroun

引用次数: 0

Exploring the differences in surface electromyographic signal between myofascial-pain and normal groups: Feature extraction through wavelet denoising and decomposition 探讨肌筋膜疼痛组与正常组肌电信号的差异:小波去噪分解特征提取

Proceedings of the International Conference on Signal Processing and Multimedia Applications Pub Date : 2011-07-18 DOI: 10.5220/0003515402030206

Ching-Fen Jiang, N. Yu, Yu-Ching Lin

{"title":"Exploring the differences in surface electromyographic signal between myofascial-pain and normal groups: Feature extraction through wavelet denoising and decomposition","authors":"Ching-Fen Jiang, N. Yu, Yu-Ching Lin","doi":"10.5220/0003515402030206","DOIUrl":"https://doi.org/10.5220/0003515402030206","url":null,"abstract":"Upper-back myofascial pain is an increasingly significant syndrome associated with frequent computer using. However, the changes in neuromuscular functions incurred by myofascial pain are still under-discovered. This study aims to discover the changes in neuromuscular function on the taut band through signal analysis of surface electromyography. We first developed a fully automatic algorithm to detect the duration of an epoch of muscle contraction. Following that, the features of epochs in both time-domain and frequency-domain were extracted from the 13 patients to compare with the measurement from 13 normal subjects. The higher contraction strength with lower median frequency found in the patient group is similar to the reported changes with muscle fatigue. The signal was further analyzed by wavelet energy of 17 levels. The result shows that the energy measured from the patients exceeds that from the normal group at the low frequency band, suggesting that an increasing synchronization level of motor unit recruitment may cause the drop in the median frequency and the increase in contraction strength.","PeriodicalId":103791,"journal":{"name":"Proceedings of the International Conference on Signal Processing and Multimedia Applications","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126718176","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

The WINDSURF library for the efficient retrieval of multimedia hierarchical data WINDSURF库用于高效检索多媒体分层数据

Proceedings of the International Conference on Signal Processing and Multimedia Applications Pub Date : 2011-07-18 DOI: 10.5220/0003451701390148

Ilaria Bartolini, M. Patella, Guido Stromei

{"title":"The WINDSURF library for the efficient retrieval of multimedia hierarchical data","authors":"Ilaria Bartolini, M. Patella, Guido Stromei","doi":"10.5220/0003451701390148","DOIUrl":"https://doi.org/10.5220/0003451701390148","url":null,"abstract":"Several modem multimedia applications require the management of complex data, that can be defined as hierarchical objects consisting of several component elements. In such scenarios, the concept of similarity between complex objects clearly recursively depends on the similarity between component data, making difficult the resolution of several common tasks, like processing of queries and understanding the impact of different alternatives available for the definition of similarity between objects. To overcome such limitations, in this paper we present the WINDSURF library for management of multimedia hierarchical data. The goal of the library is to provide a general framework for assessing the performance of alternative query processing techniques for efficient retrieval of complex data that arise in several multimedia applications, such as image/video retrieval and the comparison of collection of documents. We designed the library so as to include characteristics of generality, flexibility, and extensibility: these are provided by way of a number of different templates that can be appropriately instantiated in order to realize the particular retrieval model needed by the user.","PeriodicalId":103791,"journal":{"name":"Proceedings of the International Conference on Signal Processing and Multimedia Applications","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123052632","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: 20

Effective interference reduction method for spread spectrum fingerprinting 扩频指纹识别的有效抗干扰方法

Proceedings of the International Conference on Signal Processing and Multimedia Applications Pub Date : 2011-07-18 DOI: 10.5220/0003497101670172

M. Kuribayashi

引用次数: 0

A spatial immersive office environment for computer-supported collaborative work: Moving towards the office of the future 计算机支持协同工作的空间沉浸式办公环境:走向未来的办公室

Proceedings of the International Conference on Signal Processing and Multimedia Applications Pub Date : 2011-07-18 DOI: 10.5220/0003567702120216

Maarten Dumont, S. Rogmans, S. Maesen, Karel Frederix, Johannes Taelman, P. Bekaert

引用次数: 1

Automatic sound restoration system concepts and design 自动音响恢复系统的概念与设计

Proceedings of the International Conference on Signal Processing and Multimedia Applications Pub Date : 2011-07-18 DOI: 10.5220/0003527702070211

A. Czyżewski, B. Kostek, A. Kupryjanow

引用次数: 2

Quality evaluation of novel DTD algorithm based on audio watermarking 基于音频水印的新型DTD算法的质量评价

Proceedings of the International Conference on Signal Processing and Multimedia Applications Pub Date : 2011-07-18 DOI: 10.5220/0003524701810186

A. Ciarkowski, A. Czyżewski

引用次数: 0

Accuracy of MP3 speech recognition under real-word conditions: Experimental study 真实世界条件下MP3语音识别的准确性实验研究

Proceedings of the International Conference on Signal Processing and Multimedia Applications Pub Date : 2011-07-18 DOI: 10.5220/0003512600050010

P. Pollák, Martin Behunek

{"title":"Accuracy of MP3 speech recognition under real-word conditions: Experimental study","authors":"P. Pollák, Martin Behunek","doi":"10.5220/0003512600050010","DOIUrl":"https://doi.org/10.5220/0003512600050010","url":null,"abstract":"This paper presents the study of speech recognition accuracy with respect to different levels of MP3 compression. Special attention is focused on the processing of speech signals with different quality, i.e. with different level of background noise and channel distortion. The work was motivated by possible usage of ASR for offline automatic transcription of audio recordings collected by standard wide-spread MP3 devices. The realized experiments have proved that although MP3 format is not optimal for speech compression it does not distort speech significantly especially for high or moderate bit rates and high quality of source data. The accuracy of connected digits ASR decreased consequently very slowly up to the bit rate 24 kbps. For the best case of PLP parameterization in close-talk channel just 3% decrease of recognition accuracy was observed while the size of the compressed file was approximately 10% of the original size. All results were slightly worse under presence of additive background noise and channel distortion in a signal but achieved accuracy was also acceptable in this case especially for PLP features.","PeriodicalId":103791,"journal":{"name":"Proceedings of the International Conference on Signal Processing and Multimedia Applications","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134214773","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

Hand image segmentation by means of Gaussian multiscale aggregation for biometric applications 基于高斯多尺度聚集的生物识别手图像分割

Proceedings of the International Conference on Signal Processing and Multimedia Applications Pub Date : 2011-07-18 DOI: 10.5220/0003462500400046

A. Sierra, C. S. Ávila, J. Casanova, G. Bailador

引用次数: 2