The Experts below are selected from a list of 48960 Experts worldwide ranked by ideXlab platform
Yuji Yamakawa - One of the best experts on this subject based on the ideXlab platform.
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reference broadcast frame synchronization for distributed high speed camera network
Static Analysis Symposium, 2018Co-Authors: Hyuno Kim, Masatoshi Ishikawa, Yuji YamakawaAbstract:Frame synchronization using reference broadcast is a promising method for distributed high-speed camera network due to its intuitive synchronization structure. This paper examines the performance of reference broadcast scheme based on Message Passing Interface at camera node level. For this purpose, the event time distribution regarding reference signal receiving and Image Capturing is statistically analyzed. We built a high-speed camera network consisting of 8 camera nodes and attained a high accuracy of frame synchronization, with a standard deviation on the order of tens of microseconds. In order to prove the synchronized operation of high-speed camera network at 1,000 Hz, an experiment with fast flashing LED is conducted.
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SAS - Reference broadcast frame synchronization for distributed high-speed camera network
2018 IEEE Sensors Applications Symposium (SAS), 2018Co-Authors: Hyuno Kim, Masatoshi Ishikawa, Yuji YamakawaAbstract:Frame synchronization using reference broadcast is a promising method for distributed high-speed camera network due to its intuitive synchronization structure. This paper examines the performance of reference broadcast scheme based on Message Passing Interface at camera node level. For this purpose, the event time distribution regarding reference signal receiving and Image Capturing is statistically analyzed. We built a high-speed camera network consisting of 8 camera nodes and attained a high accuracy of frame synchronization, with a standard deviation on the order of tens of microseconds. In order to prove the synchronized operation of high-speed camera network at 1,000 Hz, an experiment with fast flashing LED is conducted.
Hyuno Kim - One of the best experts on this subject based on the ideXlab platform.
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reference broadcast frame synchronization for distributed high speed camera network
Static Analysis Symposium, 2018Co-Authors: Hyuno Kim, Masatoshi Ishikawa, Yuji YamakawaAbstract:Frame synchronization using reference broadcast is a promising method for distributed high-speed camera network due to its intuitive synchronization structure. This paper examines the performance of reference broadcast scheme based on Message Passing Interface at camera node level. For this purpose, the event time distribution regarding reference signal receiving and Image Capturing is statistically analyzed. We built a high-speed camera network consisting of 8 camera nodes and attained a high accuracy of frame synchronization, with a standard deviation on the order of tens of microseconds. In order to prove the synchronized operation of high-speed camera network at 1,000 Hz, an experiment with fast flashing LED is conducted.
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SAS - Reference broadcast frame synchronization for distributed high-speed camera network
2018 IEEE Sensors Applications Symposium (SAS), 2018Co-Authors: Hyuno Kim, Masatoshi Ishikawa, Yuji YamakawaAbstract:Frame synchronization using reference broadcast is a promising method for distributed high-speed camera network due to its intuitive synchronization structure. This paper examines the performance of reference broadcast scheme based on Message Passing Interface at camera node level. For this purpose, the event time distribution regarding reference signal receiving and Image Capturing is statistically analyzed. We built a high-speed camera network consisting of 8 camera nodes and attained a high accuracy of frame synchronization, with a standard deviation on the order of tens of microseconds. In order to prove the synchronized operation of high-speed camera network at 1,000 Hz, an experiment with fast flashing LED is conducted.
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high speed distributed camera network based on message passing interface
International Conference on Information Fusion, 2016Co-Authors: Hyuno Kim, Masatoshi IshikawaAbstract:High-speed camera can be implemented into a distributed camera network, which makes the camera network available to various dynamic applications such as observation at high speed and tracking of fast moving objects. This network system can be referred as high-speed distributed smart cameras (H-DSC). In order to construct a H-DSC, accurate synchronization between cameras as well as real-time feature of whole system should be carefully considered due to the restriction of ‘high speed’. In this paper, we describe a H-DSC system which has a simple structure based on Message Passing Interface and show that it has enough accuracy in time synchronization to use in dynamic applications. Image Capturing at 400 Hz and object tracking at 200 Hz are shown as a kind of example tasks. It is expected that, of course, if we use higher frame rate cameras, our system structure also will work at higher speed such as 1,000 Hz.
Masatoshi Ishikawa - One of the best experts on this subject based on the ideXlab platform.
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reference broadcast frame synchronization for distributed high speed camera network
Static Analysis Symposium, 2018Co-Authors: Hyuno Kim, Masatoshi Ishikawa, Yuji YamakawaAbstract:Frame synchronization using reference broadcast is a promising method for distributed high-speed camera network due to its intuitive synchronization structure. This paper examines the performance of reference broadcast scheme based on Message Passing Interface at camera node level. For this purpose, the event time distribution regarding reference signal receiving and Image Capturing is statistically analyzed. We built a high-speed camera network consisting of 8 camera nodes and attained a high accuracy of frame synchronization, with a standard deviation on the order of tens of microseconds. In order to prove the synchronized operation of high-speed camera network at 1,000 Hz, an experiment with fast flashing LED is conducted.
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SAS - Reference broadcast frame synchronization for distributed high-speed camera network
2018 IEEE Sensors Applications Symposium (SAS), 2018Co-Authors: Hyuno Kim, Masatoshi Ishikawa, Yuji YamakawaAbstract:Frame synchronization using reference broadcast is a promising method for distributed high-speed camera network due to its intuitive synchronization structure. This paper examines the performance of reference broadcast scheme based on Message Passing Interface at camera node level. For this purpose, the event time distribution regarding reference signal receiving and Image Capturing is statistically analyzed. We built a high-speed camera network consisting of 8 camera nodes and attained a high accuracy of frame synchronization, with a standard deviation on the order of tens of microseconds. In order to prove the synchronized operation of high-speed camera network at 1,000 Hz, an experiment with fast flashing LED is conducted.
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high speed distributed camera network based on message passing interface
International Conference on Information Fusion, 2016Co-Authors: Hyuno Kim, Masatoshi IshikawaAbstract:High-speed camera can be implemented into a distributed camera network, which makes the camera network available to various dynamic applications such as observation at high speed and tracking of fast moving objects. This network system can be referred as high-speed distributed smart cameras (H-DSC). In order to construct a H-DSC, accurate synchronization between cameras as well as real-time feature of whole system should be carefully considered due to the restriction of ‘high speed’. In this paper, we describe a H-DSC system which has a simple structure based on Message Passing Interface and show that it has enough accuracy in time synchronization to use in dynamic applications. Image Capturing at 400 Hz and object tracking at 200 Hz are shown as a kind of example tasks. It is expected that, of course, if we use higher frame rate cameras, our system structure also will work at higher speed such as 1,000 Hz.
Romildo Dias Toledo Filho - One of the best experts on this subject based on the ideXlab platform.
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A multi-scale investigation of the mechanical behavior of durable sisal fiber cement composites
Materia-rio De Janeiro, 2010Co-Authors: Flavio De Andrade Silva, Barzin Mobasher, Romildo Dias Toledo Filho, Nikhilesh ChawlaAbstract:Durable sisal fiber cement composites reinforced with long unidirectional aligned fibers were developed and their mechanical behavior was characterized in a multi-scale level. Tensile tests were performed in individual sisal fibers. Weibull statistics were used to quantify the degree of variability in fiber strength at different gage lengths. The fiber-matrix pull-out behavior was evaluated at several curing ages and embedded lengths. The composite’s mechanical response was measured under direct tension while crack formation was investigated using a high resolution Image Capturing procedure. Crack spacing was measured using Image analysis and correlated with the applied strain under both the tensile and bending response.
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cracking mechanisms in durable sisal fiber reinforced cement composites
Cement & Concrete Composites, 2009Co-Authors: Flavio De Andrade Silva, Barzin Mobasher, Romildo Dias Toledo FilhoAbstract:Fiber reinforced cement composite laminates with long sisal fibers were manufactured using a cast hand lay up technique. A matrix with partial cement replacement by metakaolin and calcined waste crushed clay brick was used in order to improve the durability aspects. Mechanical response was measured under tension and bending tests while crack formation was investigated using a high resolution Image Capturing procedure. Crack spacing was measured using Image analysis and correlated with the applied strain under both the tensile and bending response. Various stages of loading corresponding to initiation, propagation, distribution, opening, and localization of a crack system in the specimen are discussed. The effect of flexural cracking on the location of neutral axis during the bending tests was measured using strain-gages.
Flavio De Andrade Silva - One of the best experts on this subject based on the ideXlab platform.
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A multi-scale investigation of the mechanical behavior of durable sisal fiber cement composites
Materia-rio De Janeiro, 2010Co-Authors: Flavio De Andrade Silva, Barzin Mobasher, Romildo Dias Toledo Filho, Nikhilesh ChawlaAbstract:Durable sisal fiber cement composites reinforced with long unidirectional aligned fibers were developed and their mechanical behavior was characterized in a multi-scale level. Tensile tests were performed in individual sisal fibers. Weibull statistics were used to quantify the degree of variability in fiber strength at different gage lengths. The fiber-matrix pull-out behavior was evaluated at several curing ages and embedded lengths. The composite’s mechanical response was measured under direct tension while crack formation was investigated using a high resolution Image Capturing procedure. Crack spacing was measured using Image analysis and correlated with the applied strain under both the tensile and bending response.
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cracking mechanisms in durable sisal fiber reinforced cement composites
Cement & Concrete Composites, 2009Co-Authors: Flavio De Andrade Silva, Barzin Mobasher, Romildo Dias Toledo FilhoAbstract:Fiber reinforced cement composite laminates with long sisal fibers were manufactured using a cast hand lay up technique. A matrix with partial cement replacement by metakaolin and calcined waste crushed clay brick was used in order to improve the durability aspects. Mechanical response was measured under tension and bending tests while crack formation was investigated using a high resolution Image Capturing procedure. Crack spacing was measured using Image analysis and correlated with the applied strain under both the tensile and bending response. Various stages of loading corresponding to initiation, propagation, distribution, opening, and localization of a crack system in the specimen are discussed. The effect of flexural cracking on the location of neutral axis during the bending tests was measured using strain-gages.
