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2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS)最新文献

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Censorship of video images with adaptive reconstruction based on spectral domain watermarking 基于谱域水印的自适应重构视频图像审查
2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS) Pub Date : 2015-11-23 DOI: 10.1109/NDS.2015.7332647
Thomas Sablik, J. Velten, A. Kummert
{"title":"Censorship of video images with adaptive reconstruction based on spectral domain watermarking","authors":"Thomas Sablik, J. Velten, A. Kummert","doi":"10.1109/NDS.2015.7332647","DOIUrl":"https://doi.org/10.1109/NDS.2015.7332647","url":null,"abstract":"Censorship of video images has become an important field of science nowadays. Multimedia files often contain sensitive content that should be unseen by human observer. Therefor a novel system for censorship of video images based on spectral domain watermarking is described in the present paper. Faces are detected by face detection algorithms and embedded as watermarks into the images. Then these areas are blurred to protect privacy. The whole MJPEG video is also embedded as watermark to protect against tampering. Adaptive reconstruction allows low quality reconstruction of tampered areas and high quality reconstruction of protected faces.","PeriodicalId":284922,"journal":{"name":"2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129213105","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
Classification of ascending steps and stairs using Time-of-Flight sensor data 使用飞行时间传感器数据对上升台阶和楼梯进行分类
2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS) Pub Date : 2015-11-23 DOI: 10.1109/NDS.2015.7332643
Carsten Stahlschmidt, Alexandros Gavriilidis, A. Kummert
{"title":"Classification of ascending steps and stairs using Time-of-Flight sensor data","authors":"Carsten Stahlschmidt, Alexandros Gavriilidis, A. Kummert","doi":"10.1109/NDS.2015.7332643","DOIUrl":"https://doi.org/10.1109/NDS.2015.7332643","url":null,"abstract":"This paper proposes a method to analyse human-made environments in order to verify the presence of ascending steps or stairs. Our system is intended to assist visually impaired people by providing acoustic information about the scene in front of a low-resolution Time-of-Flight (ToF) camera that is fixed to a mobile vehicle (rollator). Detailed instructions to the user about potentially hazardous situations are provided. This paper in particular deals with a fast approach on classification of ascending steps in 3D point clouds. This method is part of a system that aims on enhancing visually impaired persons understand the environment and help prevent collisions.","PeriodicalId":284922,"journal":{"name":"2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125930907","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: 6
Evaluation of pedestrian detection fusion and localization based on the idea of car-to-X communication 基于车对x通信思想的行人检测融合与定位评价
2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS) Pub Date : 2015-11-23 DOI: 10.1109/NDS.2015.7332644
Alexandros Gavriilidis, Carsten Stahlschmidt, J. Velten, A. Kummert
{"title":"Evaluation of pedestrian detection fusion and localization based on the idea of car-to-X communication","authors":"Alexandros Gavriilidis, Carsten Stahlschmidt, J. Velten, A. Kummert","doi":"10.1109/NDS.2015.7332644","DOIUrl":"https://doi.org/10.1109/NDS.2015.7332644","url":null,"abstract":"Pedestrian safety applications for urban environments, e.g. observation of intersections or crosswalks for pedestrians, are a growing research area. This paper is focused on the fusion of detected pedestrians from different viewing angles, especially from a surveillance system and from a moving car. Therefore, a combination of the available information inside of a generated world map, which is based on the global positioning system (GPS), is presented. The model for transforming detections with assumed uncertainties into the world map, and an attempt to combine separate independent single detections from different views to a unique one are results of the paper. Besides the combination of information, an evaluation of the detection accuracy of a surveillance system and a monocular object detection driver assistance system is presented. This evaluation discloses drawbacks as well as benefits of an information mapping from different viewing angles into a global world map.","PeriodicalId":284922,"journal":{"name":"2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132838735","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
State feedback structural stabilization of 2D discrete Roesser models 二维离散Roesser模型的状态反馈结构镇定
2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS) Pub Date : 2015-11-23 DOI: 10.1109/NDS.2015.7332631
O. Bachelier, N. Yeganefar, D. Mehdi, W. Paszke
{"title":"State feedback structural stabilization of 2D discrete Roesser models","authors":"O. Bachelier, N. Yeganefar, D. Mehdi, W. Paszke","doi":"10.1109/NDS.2015.7332631","DOIUrl":"https://doi.org/10.1109/NDS.2015.7332631","url":null,"abstract":"In the previous edition of nDS, a Linear Matrix Inequality (LMI)-based necessary and sufficient condition to test the structural stability of 2D discrete linear Roesser models was proposed. This note hinges on this condition and proposes the first numerically tractable necessary and sufficient condition for state feedback structural stabilization of such models.","PeriodicalId":284922,"journal":{"name":"2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129872974","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
Series concatenation of 2D convolutional codes 二维卷积码的串联
2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS) Pub Date : 2015-11-23 DOI: 10.1109/NDS.2015.7332648
Joan-Josep Climent, D. N. Avelli, R. Pinto, Rita Simões
{"title":"Series concatenation of 2D convolutional codes","authors":"Joan-Josep Climent, D. N. Avelli, R. Pinto, Rita Simões","doi":"10.1109/NDS.2015.7332648","DOIUrl":"https://doi.org/10.1109/NDS.2015.7332648","url":null,"abstract":"In this paper we study two-dimensional (2D) con-volutional codes which are obtained from series concatenation of two 2D convolutional codes. In this preliminary work we confine ourselves to dealing with finite-support 2D convolutional codes and make use of the so-called Fornasini-Marchesini input-state-output (ISO) model representations. In particular, we show that the series concatenation of two 2D convolutional codes is again a 2D convolutional code and we explicitly compute an ISO representation of the code. Within these ISO representations we study when the structural properties of reachability and observability of the two given ISO representations carry over to the resulting 2D convolutional code.","PeriodicalId":284922,"journal":{"name":"2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125964071","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: 6
Detection of ascending and descending stairways by surface normal vectors 用表面法向量检测上下楼梯
2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS) Pub Date : 2015-11-23 DOI: 10.1109/NDS.2015.7332646
Daniel Wagner, K. Kalischewski, J. Velten, A. Kummert
{"title":"Detection of ascending and descending stairways by surface normal vectors","authors":"Daniel Wagner, K. Kalischewski, J. Velten, A. Kummert","doi":"10.1109/NDS.2015.7332646","DOIUrl":"https://doi.org/10.1109/NDS.2015.7332646","url":null,"abstract":"Persons with walking frames are often limited with respect to visual acuity and they are depending on assistance. To give them the possibility to move free and autonomous in their environment an intelligent assistance system is proposed which can be mounted on a walking frame is used to observe the scene in walking direction, and obstacles have to be detected. Especially, stairways represent a high risk of injury if a collapse occurs. For stairway recognition, an algorithm is proposed which estimates normal vectors by using a covariance matrix and this makes it possible to segment the point cloud data provided by the Kinect sensor. The calculation of surface normal vectors of these regions helps to detect ascending and descending stairways.","PeriodicalId":284922,"journal":{"name":"2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116615542","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: 2
Stabilization of nonlinear 2D Fornasini-Marchesini and Roesser systems 非线性二维Fornasini-Marchesini和Roesser系统的镇定
2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS) Pub Date : 2015-11-23 DOI: 10.1109/NDS.2015.7332650
P. Pakshin, J. Emelianova, K. Gałkowski, E. Rogers
{"title":"Stabilization of nonlinear 2D Fornasini-Marchesini and Roesser systems","authors":"P. Pakshin, J. Emelianova, K. Gałkowski, E. Rogers","doi":"10.1109/NDS.2015.7332650","DOIUrl":"https://doi.org/10.1109/NDS.2015.7332650","url":null,"abstract":"The paper considers nonlinear 2D systems described by Fornasini-Marchesini and Roesser state-space models. Sufficient conditions for the property of exponential stability are developed in terms of vector Lyapunov functions and a converse stability theorem is proved. A form of passivity, termed exponential passivity, is defined and used, together with a vector storage function, to develop a new control law design algorithm to guarantee exponential stability of the controlled system. As one application, the algorithm is applied to the physically relevant case of systems with nonlinear actuator dynamics.","PeriodicalId":284922,"journal":{"name":"2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124859891","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
Existence and uniqueness of the solutions of continuous nonlinear 2D Roesser models: The locally Lipschitz continuous case 二维连续非线性Roesser模型解的存在唯一性:局部Lipschitz连续情况
2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS) Pub Date : 2015-11-23 DOI: 10.1109/NDS.2015.7332632
R. David, Francisco J. Silva, N. Yeganefar, O. Bachelier
{"title":"Existence and uniqueness of the solutions of continuous nonlinear 2D Roesser models: The locally Lipschitz continuous case","authors":"R. David, Francisco J. Silva, N. Yeganefar, O. Bachelier","doi":"10.1109/NDS.2015.7332632","DOIUrl":"https://doi.org/10.1109/NDS.2015.7332632","url":null,"abstract":"This paper investigates the existence and uniqueness of the solution of the nonlinear continuous 2D Roesser model. We first remind the reader of the results obtained in the globally Lipschitz continuous case where a global solution is always to be found. Then we investigate the more general case which could be applied in more situations: when the function describing the system is only supposed locally Lipschitz continuous. Since in this case the solution will be defined only locally, the question of whether we can extend the solutions or not is answered.","PeriodicalId":284922,"journal":{"name":"2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS)","volume":"250 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114335334","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
Alzheimer's electroencephalogram event scalp localization 阿尔茨海默病脑电图事件头皮定位
2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS) Pub Date : 2015-11-23 DOI: 10.1109/NDS.2015.7332640
P. Rodrigues, D. Freitas, João Paulo Ramos Teixeira
{"title":"Alzheimer's electroencephalogram event scalp localization","authors":"P. Rodrigues, D. Freitas, João Paulo Ramos Teixeira","doi":"10.1109/NDS.2015.7332640","DOIUrl":"https://doi.org/10.1109/NDS.2015.7332640","url":null,"abstract":"Alzheimer's disease (AD) is a neurodegenerative and incurable illness that causes intellectual functions decrease. This study is a new approach to improve the scalp brain anomalies localization associated with Electroencephalogram (EEG) energy variations of EEG threads (subsegments) sequencies sets found in AD patients by unsupervised learning techniques, called AD EEG temporal events. This study showed that AD patients have less brain dynamics than controls, because the AD EEG events propagation time over the scalp is higher and statistically different from control subjects (p<;0.0022).","PeriodicalId":284922,"journal":{"name":"2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125032145","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: 2
Stabilization of stochastic 2D Fornasini-Marchesini systems 随机二维Fornasini-Marchesini系统的镇定
2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS) Pub Date : 2015-11-23 DOI: 10.1109/NDS.2015.7332653
P. Pakshin, J. Emelianova, M. Emelianov, K. Gałkowski, E. Rogers
{"title":"Stabilization of stochastic 2D Fornasini-Marchesini systems","authors":"P. Pakshin, J. Emelianova, M. Emelianov, K. Gałkowski, E. Rogers","doi":"10.1109/NDS.2015.7332653","DOIUrl":"https://doi.org/10.1109/NDS.2015.7332653","url":null,"abstract":"The paper uses the state-space model setting to consider the stabilization of stochastic nonlinear 2D Fornasini-Marchesini systems, where the properties of stability in the second moment and exponential stability in the mean square (ESMS) are defined and sufficient conditions for their existence established. In the case of ESMS a converse theorem is also established. The property of stochastic dissipativity in the second moment is introduced and a particular case of this property, termed passivity in the mean square, is used, together with a vector storage function, to develop a new method for control law design. Two practically motivated examples are given to demonstrate the application of the new results.","PeriodicalId":284922,"journal":{"name":"2015 IEEE 9th International Workshop on Multidimensional (nD) Systems (nDS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121606628","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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