... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies最新文献
Narun Asvarujanon, N. Wakamiya, K. Leibnitz, M. Murata
Computer networks have become highly complicated and less flexible to handle emerging problems which often occur nowadays. In order to cope with unpredictable problems, the concept of biologically inspired networks has been introduced, which provides a high degree of robustness and adaptability to computer networks. However, the performance of the network often relies heavily on the configurable parameters assigned during the deployment process, where end nodes cannot change these parameters during runtime to achieve the desirable performance. In this paper, we introduce a new method, called attractor perturbation (AP) allowing end nodes to influence the average of an observable performance metric at runtime without directly manipulating any optimal parameters of underlying protocols. An example application in this paper is a traffic distribution over multi-path routing protocol in MANETs, where the target variable is end-to-end delay. The approach to solve for the appropriate amount of management influence and simulation results are shown in this paper.
{"title":"Noise-assisted traffic distribution over multi-path ad hoc routing","authors":"Narun Asvarujanon, N. Wakamiya, K. Leibnitz, M. Murata","doi":"10.1145/2093698.2093823","DOIUrl":"https://doi.org/10.1145/2093698.2093823","url":null,"abstract":"Computer networks have become highly complicated and less flexible to handle emerging problems which often occur nowadays. In order to cope with unpredictable problems, the concept of biologically inspired networks has been introduced, which provides a high degree of robustness and adaptability to computer networks. However, the performance of the network often relies heavily on the configurable parameters assigned during the deployment process, where end nodes cannot change these parameters during runtime to achieve the desirable performance. In this paper, we introduce a new method, called attractor perturbation (AP) allowing end nodes to influence the average of an observable performance metric at runtime without directly manipulating any optimal parameters of underlying protocols. An example application in this paper is a traffic distribution over multi-path routing protocol in MANETs, where the target variable is end-to-end delay. The approach to solve for the appropriate amount of management influence and simulation results are shown in this paper.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79714378","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}
An algorithm for correction and soft verification of message protected by cryptographic check values like MAC is presented. The algorithm uses soft output values of the channel decoder which are given as input of the cryptographic verification module. The criterion of standard verification becomes less strict, when the algorithm for correction and soft verification is introduced. Soft verification allows the correction of messages, if only some bits of the message and the MAC are modified. So, many disturbed messages, which cannot be corrected by repetition, can be recovered -- at the cost of trust in the message. This paper introduces the quantified unit of trust in a message and presents the results of simulations, showing a significant improvement of the acceptance rate of the cryptographic verification.
{"title":"Trust in corrected messages protected by message authentication codes","authors":"N. Zivic","doi":"10.1145/2093698.2093764","DOIUrl":"https://doi.org/10.1145/2093698.2093764","url":null,"abstract":"An algorithm for correction and soft verification of message protected by cryptographic check values like MAC is presented. The algorithm uses soft output values of the channel decoder which are given as input of the cryptographic verification module. The criterion of standard verification becomes less strict, when the algorithm for correction and soft verification is introduced. Soft verification allows the correction of messages, if only some bits of the message and the MAC are modified. So, many disturbed messages, which cannot be corrected by repetition, can be recovered -- at the cost of trust in the message. This paper introduces the quantified unit of trust in a message and presents the results of simulations, showing a significant improvement of the acceptance rate of the cryptographic verification.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90350156","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}
A method is proposed for bandwidth table constructions in synchronized QoS ad hoc networking. In this scheme of networking, specified bandwidth is reserved for each communication path based on bandwidth tables constructed by each terminal. This bandwidth reservation is desirable in diaster areas where rescue teams need to share wideband picture images of distant locations sent from rescue robots or human scouts. However, because process gain of associated CDMA operation is assumed to be high enough, unreasonable ra-diowave bandwidth is necessary for the system designs. The proposed method for bandwidth table construction regards CDMA interferences when the process gain is set arbitrary. With this method, system designs with reasonable radiowave bandwidth become possible. Simulations confirm the network performances with the proposed method.
{"title":"Bandwidth table construction regarding CDMA interferences in synchronized QoS ad hoc networking","authors":"Hisayoshi Sugiyama","doi":"10.1145/2093698.2093775","DOIUrl":"https://doi.org/10.1145/2093698.2093775","url":null,"abstract":"A method is proposed for bandwidth table constructions in synchronized QoS ad hoc networking. In this scheme of networking, specified bandwidth is reserved for each communication path based on bandwidth tables constructed by each terminal. This bandwidth reservation is desirable in diaster areas where rescue teams need to share wideband picture images of distant locations sent from rescue robots or human scouts. However, because process gain of associated CDMA operation is assumed to be high enough, unreasonable ra-diowave bandwidth is necessary for the system designs. The proposed method for bandwidth table construction regards CDMA interferences when the process gain is set arbitrary. With this method, system designs with reasonable radiowave bandwidth become possible. Simulations confirm the network performances with the proposed method.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73029902","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}
M. Radványi, Zóra Solymár, A. Stubendek, K. Karacs
Portable assistive devices are getting more and more widespread. Since most cell phones are nowadays equipped with cameras they can provide an easy way for blind and visually impaired people to obtain visual information about their environment. In this paper we present a banknote recognition system for our previously proposed mobile device, called the bionic eyeglass. We employ a recognition scheme based on the structural topology of banknotes that enables that the visual features detected are not joined in an ensemble classifier independently, but they are coupled via an excitation-inhibition model. We have shown that the technique outperforms classical ensemble classifiers.
{"title":"Mobile banknote recognition: topological models in scene understanding","authors":"M. Radványi, Zóra Solymár, A. Stubendek, K. Karacs","doi":"10.1145/2093698.2093883","DOIUrl":"https://doi.org/10.1145/2093698.2093883","url":null,"abstract":"Portable assistive devices are getting more and more widespread. Since most cell phones are nowadays equipped with cameras they can provide an easy way for blind and visually impaired people to obtain visual information about their environment. In this paper we present a banknote recognition system for our previously proposed mobile device, called the bionic eyeglass. We employ a recognition scheme based on the structural topology of banknotes that enables that the visual features detected are not joined in an ensemble classifier independently, but they are coupled via an excitation-inhibition model. We have shown that the technique outperforms classical ensemble classifiers.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81892138","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}
In non-coherent multiple-input multiple-output (MIMO) systems, the conventional noncoherent MAP detector is too complex to be performed if the number of labelling bits conveyed within one single coherence block is high. In order to overcome this difficulty, in this paper, we propose a noncoherent MAP (maximum a posteriori) detector with very low complexity for orthogonally designed USTM (unitary space-time modulation) schemes. In addition, we show that the detected soft values are independent of the extrinsic information fed back from the turbo decoder. As a result, iterative detection and decoding between the noncoherent detector and the turbo decoder can be avoided without performance degradation. Compared to the scheme using the exhaustive-search-based noncoherent MAP detector, the proposed scheme achieves the same error performance, and has a much lower detection complexity.
{"title":"A low-complexity noncoherent MAP detector for turbo-coded unitary space-time modulation scheme","authors":"Yeong-Luh Ueng, Yen-ming Chen","doi":"10.1145/2093698.2093785","DOIUrl":"https://doi.org/10.1145/2093698.2093785","url":null,"abstract":"In non-coherent multiple-input multiple-output (MIMO) systems, the conventional noncoherent MAP detector is too complex to be performed if the number of labelling bits conveyed within one single coherence block is high. In order to overcome this difficulty, in this paper, we propose a noncoherent MAP (maximum a posteriori) detector with very low complexity for orthogonally designed USTM (unitary space-time modulation) schemes. In addition, we show that the detected soft values are independent of the extrinsic information fed back from the turbo decoder. As a result, iterative detection and decoding between the noncoherent detector and the turbo decoder can be avoided without performance degradation. Compared to the scheme using the exhaustive-search-based noncoherent MAP detector, the proposed scheme achieves the same error performance, and has a much lower detection complexity.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79297111","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}
This paper describes the various methods that are implemented to diagnose a sample of skin for malignancy. Skin cancer detection at the earliest stage possible is vital to increase the chance of survival of the affected patient. Imaging in this field happens to be at the cross-roads. Skin cancer imaging can be visual in nature (nevoscope imaging, electron microscope, naked eye) or non-visual (optical coherence tomography (OCT), Raman spectroscopy). ABCDs is a set of rules that are the first step that is applied to determine the nature of a mole. Although extensively used as front line methodology for malignancy in moles, it is not deterministic in nature. Each of the techniques described in this paper analyze the samples of the skin lesion under the scanner in a varied way. The samples of the skin lession can be either a visual depiction or in the form of a cross-section. We have after extensive experimentation arrived at two different ways to analyze the samples obtained as a result of the imaging. For the sample that we have obtained as a result of the nevoscope visual imaging, the power spectra appears to be the most discriminative and effective way of classification as against the use of discrete wavelet transformation in case of the cross-sections obtained from OCT. The aim is to ultimately build an automated system that has the capability to discriminating and classifying the skin samples into three main classes; namely, benign, precancerous and malignant independent of the scanning methodology.
{"title":"Non-invasive detection and classification of skin cancer from visual and cross-sectional images","authors":"N. Dhinagar, M. Celenk","doi":"10.1145/2093698.2093792","DOIUrl":"https://doi.org/10.1145/2093698.2093792","url":null,"abstract":"This paper describes the various methods that are implemented to diagnose a sample of skin for malignancy. Skin cancer detection at the earliest stage possible is vital to increase the chance of survival of the affected patient. Imaging in this field happens to be at the cross-roads. Skin cancer imaging can be visual in nature (nevoscope imaging, electron microscope, naked eye) or non-visual (optical coherence tomography (OCT), Raman spectroscopy). ABCDs is a set of rules that are the first step that is applied to determine the nature of a mole. Although extensively used as front line methodology for malignancy in moles, it is not deterministic in nature. Each of the techniques described in this paper analyze the samples of the skin lesion under the scanner in a varied way. The samples of the skin lession can be either a visual depiction or in the form of a cross-section. We have after extensive experimentation arrived at two different ways to analyze the samples obtained as a result of the imaging. For the sample that we have obtained as a result of the nevoscope visual imaging, the power spectra appears to be the most discriminative and effective way of classification as against the use of discrete wavelet transformation in case of the cross-sections obtained from OCT. The aim is to ultimately build an automated system that has the capability to discriminating and classifying the skin samples into three main classes; namely, benign, precancerous and malignant independent of the scanning methodology.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76685639","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}
Pål Anders Floor, A. N. Kim, T. Ramstad, I. Balasingham, Niklas Wernersson, M. Skoglund
In this paper, we study the problem of communicating multiple correlated Gaussian memoryless sources over a Gaussian Multiple Access Channel (GMAC). We focus on distributed delay-free, low complexity, joint source-channel coding (JSCC) solutions to the problem. Theoretical performance bounds are derived and linear and nonlinear JSCC schemes are evaluated. The main contribution is a nonlinear hybrid discrete-analog mapping based on distributed quantization and a linear continuous mapping named Distributed Quantizer Linear Coder (DQLC). The proposed scheme shows promising performance which improve with increasing correlation and is robust against variations in noise level.
{"title":"Transmitting multiple correlated gaussian sources over a Gaussian MAC using delay-free mappings","authors":"Pål Anders Floor, A. N. Kim, T. Ramstad, I. Balasingham, Niklas Wernersson, M. Skoglund","doi":"10.1145/2093698.2093808","DOIUrl":"https://doi.org/10.1145/2093698.2093808","url":null,"abstract":"In this paper, we study the problem of communicating multiple correlated Gaussian memoryless sources over a Gaussian Multiple Access Channel (GMAC). We focus on distributed delay-free, low complexity, joint source-channel coding (JSCC) solutions to the problem. Theoretical performance bounds are derived and linear and nonlinear JSCC schemes are evaluated. The main contribution is a nonlinear hybrid discrete-analog mapping based on distributed quantization and a linear continuous mapping named Distributed Quantizer Linear Coder (DQLC). The proposed scheme shows promising performance which improve with increasing correlation and is robust against variations in noise level.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79067202","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}
The Artificial Accommodation System is a micro mechatronic system which will be implanted into the capsular bag to replace the human crystalline lens. Depending on the patients' actual need for accommodation, the system autonomously adapts the refractive power of its integrated optical element in a way that the projection on the patients' retina results in a sharp image. As the Artificial Accommodation System is an active implant, its subsystems have to be supplied with electrical energy. Therefore an inductive power supply system will be developed which is able to autonomously power the Artificial Accommodation System over a period of 24h and can be recharged wirelessly. This Paper describes the design process of the coils needed for inductively transferring power to the implant. It can be shown that by means of optimization it is possible to transfer 50 mW of power to the interior of the Artificial Accommodation System.
{"title":"Design of the inductive power supply system for the artificial accommodation system","authors":"J. Nagel, M. Krug, G. Bretthauer","doi":"10.1145/2093698.2093819","DOIUrl":"https://doi.org/10.1145/2093698.2093819","url":null,"abstract":"The Artificial Accommodation System is a micro mechatronic system which will be implanted into the capsular bag to replace the human crystalline lens. Depending on the patients' actual need for accommodation, the system autonomously adapts the refractive power of its integrated optical element in a way that the projection on the patients' retina results in a sharp image. As the Artificial Accommodation System is an active implant, its subsystems have to be supplied with electrical energy. Therefore an inductive power supply system will be developed which is able to autonomously power the Artificial Accommodation System over a period of 24h and can be recharged wirelessly. This Paper describes the design process of the coils needed for inductively transferring power to the implant. It can be shown that by means of optimization it is possible to transfer 50 mW of power to the interior of the Artificial Accommodation System.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74889862","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}
The FIRESENSE FP7 project aims to implement an automatic early warning system to remotely monitor areas of archaeological and cultural interest from the risk of fire and extreme weather conditions. This challenging task requires the operation of a multimodal wireless sensor network, the setting up of an infrastructure to publish and access sensor data and the fusion of multiple modalities in a real-time fashion. This paper discusses the multimodal sensor data access and fusion aspects of the project.
{"title":"Multimodal monitoring of cultural heritage sites and the FIRESENSE project","authors":"A. A. Salah, J. Han, E. Pauwels, P. M. D. Zeeuw","doi":"10.1145/2093698.2093850","DOIUrl":"https://doi.org/10.1145/2093698.2093850","url":null,"abstract":"The FIRESENSE FP7 project aims to implement an automatic early warning system to remotely monitor areas of archaeological and cultural interest from the risk of fire and extreme weather conditions. This challenging task requires the operation of a multimodal wireless sensor network, the setting up of an infrastructure to publish and access sensor data and the fusion of multiple modalities in a real-time fashion. This paper discusses the multimodal sensor data access and fusion aspects of the project.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76275894","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}
When designing coding algorithms for the wireless endoscope, achieving good performance with very low complexity is of great importance. This is due to the fact that hardware implementation is much constrained by the small size of the endoscope capsule and available power is also very limited. In this paper, we propose a very low complexity image coder for the wireless endoscope which operates within these constraints, with special emphasis on low bit rate performance. The scheme encodes the captured images frame-by-frame using simple DPCM (Differential Pulse Coded Modulation) coding, combined with multi-rate processing, dead-zone quantization and efficient run-length coding of the quantization indices. Simulation results show that proposed coder is able to meet our objectives.
{"title":"Very low complexity low rate image coding for the wireless endoscope","authors":"A. N. Kim, T. Ramstad, I. Balasingham","doi":"10.1145/2093698.2093788","DOIUrl":"https://doi.org/10.1145/2093698.2093788","url":null,"abstract":"When designing coding algorithms for the wireless endoscope, achieving good performance with very low complexity is of great importance. This is due to the fact that hardware implementation is much constrained by the small size of the endoscope capsule and available power is also very limited. In this paper, we propose a very low complexity image coder for the wireless endoscope which operates within these constraints, with special emphasis on low bit rate performance. The scheme encodes the captured images frame-by-frame using simple DPCM (Differential Pulse Coded Modulation) coding, combined with multi-rate processing, dead-zone quantization and efficient run-length coding of the quantization indices. Simulation results show that proposed coder is able to meet our objectives.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90134476","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}
... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies
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