Pub Date : 2010-06-07DOI: 10.1109/ISCE.2010.5523716
J. Korst, V. Pronk, M. Barbieri, W. Verhaegh, Wil Michiels
In a recommender-based digital video recorder, TV programs are considered for automatic recording on a hard disk. The choice of which programs to record depends on (¿) the scores assigned to the programs by the recommender, (ii) the times and channels at which the programs are broadcast, and (Hi) the number of tuners available for recording. For a given set S of n programs that are broadcast in a given time interval, and a given number m of tuners, we consider the problem of determining a subset S' ⊆ S of programs with a maximum sum of scores that can be recorded with the m tuners. We show that this problem can be formulated as a min-cost flow problem and can be solved to optimality in O(mn2) time. In addition, we indicate how the min-cost flow approach can be adapted to take into account practical considerations such as uncertainties in the actual broadcast times of programs and programs that are broadcast multiple times in the given time interval. We present experimental results that suggest that, for realistic settings, near-optimal subsets can be determined on low-cost hardware.
{"title":"Scheduling TV recordings for a recommender-based DVR","authors":"J. Korst, V. Pronk, M. Barbieri, W. Verhaegh, Wil Michiels","doi":"10.1109/ISCE.2010.5523716","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523716","url":null,"abstract":"In a recommender-based digital video recorder, TV programs are considered for automatic recording on a hard disk. The choice of which programs to record depends on (¿) the scores assigned to the programs by the recommender, (ii) the times and channels at which the programs are broadcast, and (Hi) the number of tuners available for recording. For a given set S of n programs that are broadcast in a given time interval, and a given number m of tuners, we consider the problem of determining a subset S' ⊆ S of programs with a maximum sum of scores that can be recorded with the m tuners. We show that this problem can be formulated as a min-cost flow problem and can be solved to optimality in O(mn2) time. In addition, we indicate how the min-cost flow approach can be adapted to take into account practical considerations such as uncertainties in the actual broadcast times of programs and programs that are broadcast multiple times in the given time interval. We present experimental results that suggest that, for realistic settings, near-optimal subsets can be determined on low-cost hardware.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"202 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123041382","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5523737
A. Peregudov, E. Grinenko, K. Glasman, A. Belozertsev
This paper describes experimental study of multimodal quality of compressed television materials for portable and mobile devises. The results of the study are used to discuss the characteristics of how auditory and visual channels interact in producing multimodal quality perception. It is shown in the paper that multimodal audiovisual perceptual quality should be taken into account. We propose the polynomial model of multimodal quality assessment of compressed television materials, based on integration of two modalities (audio and video) that can be used for optimum bit rate allocation in multimedia application.
{"title":"An audiovisual quality model of compressed television materials for portable and mobile multimedia applications","authors":"A. Peregudov, E. Grinenko, K. Glasman, A. Belozertsev","doi":"10.1109/ISCE.2010.5523737","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523737","url":null,"abstract":"This paper describes experimental study of multimodal quality of compressed television materials for portable and mobile devises. The results of the study are used to discuss the characteristics of how auditory and visual channels interact in producing multimodal quality perception. It is shown in the paper that multimodal audiovisual perceptual quality should be taken into account. We propose the polynomial model of multimodal quality assessment of compressed television materials, based on integration of two modalities (audio and video) that can be used for optimum bit rate allocation in multimedia application.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130613291","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5523295
Tsan-Ming Wu, Szu-Liang Wang
The distributed wireless communications system is a new architecture for wireless access with multiple distributed relay stations (RSs). Instead of the traditional cellular system, the multihop cellular network for executing their data transmission can potentially augment coverage, data rates, and quality of service (QoS) performance. However, in the multiuser environment the multihop cellular system has a competition problem among users so that fair spectrum usage for all users becomes an important index of QoS. On the other hand, the system overloading matter of RSs may cause a system malfunction. In this paper, the RS overloading problem is considered, and we propose an adaptive fair spectrum usage algorithm for enhancing capacity and QoS of multiuser OFDM (orthogonal frequency division multiplexing) multihop cellular systems. Furthermore, an overloading cancellation algorithm also presented to cope with the RS overloading problem.
分布式无线通信系统是一种由多个分布式中继站组成的新型无线接入体系结构。代替传统的蜂窝式系统，用于执行其数据传输的多跳蜂窝式网络可以潜在地增加覆盖范围、数据速率和服务质量(QoS)性能。然而，在多用户环境下，多跳蜂窝系统存在用户间的竞争问题，因此所有用户的频谱公平使用成为QoS的重要指标。另一方面，RSs的系统过载问题可能导致系统故障。针对多用户OFDM (orthogonal frequency division multiplexing，正交频分复用)多跳蜂窝系统中存在的RS过载问题，提出了一种自适应公平频谱使用算法来提高系统容量和服务质量。在此基础上，提出了一种针对RS系统过载问题的过载消除算法。
{"title":"Adaptive fair spectrum usage with overloading cancellation for OFDM multihop cellular networks","authors":"Tsan-Ming Wu, Szu-Liang Wang","doi":"10.1109/ISCE.2010.5523295","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523295","url":null,"abstract":"The distributed wireless communications system is a new architecture for wireless access with multiple distributed relay stations (RSs). Instead of the traditional cellular system, the multihop cellular network for executing their data transmission can potentially augment coverage, data rates, and quality of service (QoS) performance. However, in the multiuser environment the multihop cellular system has a competition problem among users so that fair spectrum usage for all users becomes an important index of QoS. On the other hand, the system overloading matter of RSs may cause a system malfunction. In this paper, the RS overloading problem is considered, and we propose an adaptive fair spectrum usage algorithm for enhancing capacity and QoS of multiuser OFDM (orthogonal frequency division multiplexing) multihop cellular systems. Furthermore, an overloading cancellation algorithm also presented to cope with the RS overloading problem.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124051375","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5523078
Audie Spina, A. Morales
This paper proposes two enhancements to the Noise Shaping (NS) algorithm with the intent of reducing the processing time required to shape the coefficients in the dual tree discrete wavelet transform (DDWT). First, Subband Significant Coefficient Determination (SSCD) will identify the most important coefficients while eliminating the others. A second algorithm, Energy Distribution Noise Shaping (EDNS) more efficiently processes the wavelet coefficients of the transform based on individual subband energy distributions.
{"title":"Enhancements in the dual tree discrete wavelet transform algorithm for video processing","authors":"Audie Spina, A. Morales","doi":"10.1109/ISCE.2010.5523078","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523078","url":null,"abstract":"This paper proposes two enhancements to the Noise Shaping (NS) algorithm with the intent of reducing the processing time required to shape the coefficients in the dual tree discrete wavelet transform (DDWT). First, Subband Significant Coefficient Determination (SSCD) will identify the most important coefficients while eliminating the others. A second algorithm, Energy Distribution Noise Shaping (EDNS) more efficiently processes the wavelet coefficients of the transform based on individual subband energy distributions.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123734492","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5523725
Jong-Nam Kim, Taekyung Ryu
In this paper, we propose a fast motion estimation algorithm to reduce computational load of the FS (full search) algorithm. We reduce only unnecessary computations which doesn't affect predicted images from the motion vector. To do that, we use normalized dithering matching scan to get uniform distribution of partial distortion by which we can reduce only unnecessary computation significantly. Additionally, we remove unlike candidate vectors faster by using multiply of LOG value to threshold of matching error. Additionally, we further reduce unnecessary computation for motion estimation according to distribution of motion vectors. Our algorithm reduces about 60% of computations for block matching error compared with the conventional PDE (partial distortion elimination) algorithm almost without degradation of prediction quality.
{"title":"A fast PDE algorithm using LOG based comparison threshold and dithering scan for real-time MPEG video coding","authors":"Jong-Nam Kim, Taekyung Ryu","doi":"10.1109/ISCE.2010.5523725","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523725","url":null,"abstract":"In this paper, we propose a fast motion estimation algorithm to reduce computational load of the FS (full search) algorithm. We reduce only unnecessary computations which doesn't affect predicted images from the motion vector. To do that, we use normalized dithering matching scan to get uniform distribution of partial distortion by which we can reduce only unnecessary computation significantly. Additionally, we remove unlike candidate vectors faster by using multiply of LOG value to threshold of matching error. Additionally, we further reduce unnecessary computation for motion estimation according to distribution of motion vectors. Our algorithm reduces about 60% of computations for block matching error compared with the conventional PDE (partial distortion elimination) algorithm almost without degradation of prediction quality.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128396577","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5523253
W. Kao, Jen-Jui Liu, Ming-I Chu, Yi-Kai Wang, Tsung-Hua Yang
The electrophoretic display (EPD) has become the main solution to electronic paper, but it is temperature sensitive with only a few number of gray levels. In this paper, we present an integrated image tool to automatically estimate the reflectance function curves under different temperatures, perform adaptive image halftoning to improve visual quality, and calibrate the image to compensate the nonlinear response of EPD. The proposed approach has been verified on a practical EPD panel and promising results are achieved.
{"title":"Photometric calibration for image enhancement of electrophoretic displays","authors":"W. Kao, Jen-Jui Liu, Ming-I Chu, Yi-Kai Wang, Tsung-Hua Yang","doi":"10.1109/ISCE.2010.5523253","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523253","url":null,"abstract":"The electrophoretic display (EPD) has become the main solution to electronic paper, but it is temperature sensitive with only a few number of gray levels. In this paper, we present an integrated image tool to automatically estimate the reflectance function curves under different temperatures, perform adaptive image halftoning to improve visual quality, and calibrate the image to compensate the nonlinear response of EPD. The proposed approach has been verified on a practical EPD panel and promising results are achieved.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"9 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121014196","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5522751
F. Busching, M. Doering, L. Wolf
The demographic structure is changing in many countries which leads to “aging societies”. This introduces several new challenges, e.g., for provisioning of healthcare. Many research projects try to address some of the upcoming technical issues. In this paper we delineate the integration of a complex OSGi-based “Multi-Services-Home-Platform (MSHP)”, designed for versatile healthcare and monitoring issues in a domestic area, and a common Small Office / Home Office (SOHO) broadband access router. Besides the presentation of several use cases to explain the functional requirements of the platform, a closer look on the technical requirements is provided. Many of the features and interfaces a MHSP requires are already present on modern router platforms and with growing processing capacity of embedded systems even the demand of heavier computation jobs can be manageable. In such modular systems, based on standard hard- and software, current techniques and research topics like Delay Tolerant Networking (DTN) or “new” protocols like IPv6 can easily be implemented and brought to the end-user, by combining the worlds of healthcare and consumer Internet access in one platform.
{"title":"Integration of an “Environments for Aging”-Platform in SOHO-Routers","authors":"F. Busching, M. Doering, L. Wolf","doi":"10.1109/ISCE.2010.5522751","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5522751","url":null,"abstract":"The demographic structure is changing in many countries which leads to “aging societies”. This introduces several new challenges, e.g., for provisioning of healthcare. Many research projects try to address some of the upcoming technical issues. In this paper we delineate the integration of a complex OSGi-based “Multi-Services-Home-Platform (MSHP)”, designed for versatile healthcare and monitoring issues in a domestic area, and a common Small Office / Home Office (SOHO) broadband access router. Besides the presentation of several use cases to explain the functional requirements of the platform, a closer look on the technical requirements is provided. Many of the features and interfaces a MHSP requires are already present on modern router platforms and with growing processing capacity of embedded systems even the demand of heavier computation jobs can be manageable. In such modular systems, based on standard hard- and software, current techniques and research topics like Delay Tolerant Networking (DTN) or “new” protocols like IPv6 can easily be implemented and brought to the end-user, by combining the worlds of healthcare and consumer Internet access in one platform.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122509463","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5523700
Sinwook Lee, G. Noh, E. Jang
In conventional video coding, transforms such as DCT have been playing a crucial role by providing good data compaction for further compression with quantization and entropy coding. Traditionally, transformed coefficients after quantization are represented with nonzero coefficients and their locations (or patterns) in a block. The compression of coefficient patterns was often done with run-length coding, which is also the case in MPEG-4 AVC/H.264. In this paper, we propose a new method to compress the coefficient patterns adaptively on the frame-basis. In the proposed method, we first categorize all possible coefficient patterns (i.e., 216 −1 = 65535 for 4×4 transform in AVC) into 16 different classes based on the number of nonzero coefficients in a block. The proposed method exploits the fact that the coefficient patterns have strong correlation depending on the video sequence and quantization parameter. The probability of each coefficient pattern is updated after encoding each frame, which is then used to generate a new variable length code of the pattern for the next frame. Experimental results show that the proposed method can provide up to 9.4% bit saving over MPEG-4 AVC/H.264 baseline profile encoder.
{"title":"Frame-level adaptive variable length coding for MPEG-4 AVC/H.264","authors":"Sinwook Lee, G. Noh, E. Jang","doi":"10.1109/ISCE.2010.5523700","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523700","url":null,"abstract":"In conventional video coding, transforms such as DCT have been playing a crucial role by providing good data compaction for further compression with quantization and entropy coding. Traditionally, transformed coefficients after quantization are represented with nonzero coefficients and their locations (or patterns) in a block. The compression of coefficient patterns was often done with run-length coding, which is also the case in MPEG-4 AVC/H.264. In this paper, we propose a new method to compress the coefficient patterns adaptively on the frame-basis. In the proposed method, we first categorize all possible coefficient patterns (i.e., 216 −1 = 65535 for 4×4 transform in AVC) into 16 different classes based on the number of nonzero coefficients in a block. The proposed method exploits the fact that the coefficient patterns have strong correlation depending on the video sequence and quantization parameter. The probability of each coefficient pattern is updated after encoding each frame, which is then used to generate a new variable length code of the pattern for the next frame. Experimental results show that the proposed method can provide up to 9.4% bit saving over MPEG-4 AVC/H.264 baseline profile encoder.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130565588","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5523709
J. Kinzel
This article presents paradigms for mobile applications and introduces a model-based development process, by which they can be effectively developed. With the proliferation of mobile devices such as Apple® iPhone® or BlackBerry®, business processes may be implemented in a mobile environment. Mobile applications operate in environments that place high demands on ergonomics and performance and are very different from those of desktop applications. These requirements are best met by custom-developed applications. The effort of implementation can be substantially reduced by utilizing methods such as codegeneration.
{"title":"A model driven approach to build high effective and ergonomic mobile business applications","authors":"J. Kinzel","doi":"10.1109/ISCE.2010.5523709","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523709","url":null,"abstract":"This article presents paradigms for mobile applications and introduces a model-based development process, by which they can be effectively developed. With the proliferation of mobile devices such as Apple® iPhone® or BlackBerry®, business processes may be implemented in a mobile environment. Mobile applications operate in environments that place high demands on ergonomics and performance and are very different from those of desktop applications. These requirements are best met by custom-developed applications. The effort of implementation can be substantially reduced by utilizing methods such as codegeneration.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129692322","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5523241
M. Jacob, Christian Mbianke, T. Kurner
This paper presents a dynamic 60 GHz radio channel model for system level simulations with MAC Protocols. It is based on radio propagation measurements investigating the influence of moving humans on the 60 GHz channel, which has been performed in the framework of IEEE 802.11ad 60 GHz WLAN standardization.
{"title":"A dynamic 60 GHz radio channel model for system level simulations with MAC protocols for IEEE 802.11ad","authors":"M. Jacob, Christian Mbianke, T. Kurner","doi":"10.1109/ISCE.2010.5523241","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523241","url":null,"abstract":"This paper presents a dynamic 60 GHz radio channel model for system level simulations with MAC Protocols. It is based on radio propagation measurements investigating the influence of moving humans on the 60 GHz channel, which has been performed in the framework of IEEE 802.11ad 60 GHz WLAN standardization.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124209502","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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