Searching for human actions in a large video collection is a frequent demand in our daily lives. However, it is often not well supported by current multimedia technologies. For example, by using the traditional text-based search methods, it is not quite straightforward to give proper keywords as query input if users are uncertain about the textual or verbal descriptions of interesting actions in their mind. According to the sociological findings, the use of body language could be arguably a more natural and direct way for people to express their conscious or subconscious thoughts in a nonverbal manner. Therefore, in this paper, we propose an interactive system for human action search in videos, which is characterized by enabling the user to give a search query of interesting human actions through directly performing it. In contrast to a machines learning based recognition system, we address the problem of human action search with the approximate string matching (ASM) technique. As long as a user's actions can be matched with any sequence of the video database, they are said to be meaningful actions. The experiments demonstrate the effectiveness of our system in support of the user's search task.
{"title":"Interactive human action search using body language","authors":"Yan-Ching Lin, Hong-Ming Chen, Yung-Huan Hsieh, Min-Chun Hu, Wen-Huang Cheng","doi":"10.1109/WOCC.2012.6198141","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198141","url":null,"abstract":"Searching for human actions in a large video collection is a frequent demand in our daily lives. However, it is often not well supported by current multimedia technologies. For example, by using the traditional text-based search methods, it is not quite straightforward to give proper keywords as query input if users are uncertain about the textual or verbal descriptions of interesting actions in their mind. According to the sociological findings, the use of body language could be arguably a more natural and direct way for people to express their conscious or subconscious thoughts in a nonverbal manner. Therefore, in this paper, we propose an interactive system for human action search in videos, which is characterized by enabling the user to give a search query of interesting human actions through directly performing it. In contrast to a machines learning based recognition system, we address the problem of human action search with the approximate string matching (ASM) technique. As long as a user's actions can be matched with any sequence of the video database, they are said to be meaningful actions. The experiments demonstrate the effectiveness of our system in support of the user's search task.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122669516","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}
We have analyzed the coupling gap dependent micro-ring loss in a single ring all-pass filter configuration using the two dimension (2D) finite difference time domain (FDTD) and EIM (effective index method). We utilized a new analysis scheme by calculating the transmission signal as a function of input wavelength and fitting the transmission spectrum with a phenomenological ring loss parameter. This novel scheme circumvents the complex waveguide mode analysis process, when the coupling gap is small and the all-pass coupling region becomes multi-mode. We find that the radiation loss increases rapidly with decreasing coupling gap width when the gap reaches 200 nm or below. Our initial results show that the intrinsic bending loss of a silicon micro-ring (on oxide) with a radius of 2.5μm is about 3dB/cm. The total loss of the micro-ring with 150 nm coupling gap reaches 21.82dB/cm.
{"title":"Analysis of narrow gap induced additional micro-ring loss","authors":"Kaung-Cheng Lin, Wei-Lun Chang, Ruei Hao You, Yung-Jui Chen","doi":"10.1109/WOCC.2012.6198183","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198183","url":null,"abstract":"We have analyzed the coupling gap dependent micro-ring loss in a single ring all-pass filter configuration using the two dimension (2D) finite difference time domain (FDTD) and EIM (effective index method). We utilized a new analysis scheme by calculating the transmission signal as a function of input wavelength and fitting the transmission spectrum with a phenomenological ring loss parameter. This novel scheme circumvents the complex waveguide mode analysis process, when the coupling gap is small and the all-pass coupling region becomes multi-mode. We find that the radiation loss increases rapidly with decreasing coupling gap width when the gap reaches 200 nm or below. Our initial results show that the intrinsic bending loss of a silicon micro-ring (on oxide) with a radius of 2.5μm is about 3dB/cm. The total loss of the micro-ring with 150 nm coupling gap reaches 21.82dB/cm.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131773000","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 : 2012-04-19DOI: 10.1109/WOCC.2012.6198179
Shr-Hau Huang, P. Huang, B. Hsieh, Hsin-Hui Kuo, Chao-Yung Yeh, Shau-Ching Lin, Jiang-Jen Lin, W. Cheng
We investigated the concentration effect of dispersed graphene in polymer films for being a saturable absorber (SA) to optimize the mode locking performance of the Erbium-doped fiber (EDFL) laser pulse. With the concentrations of 1.65 and 3.25 wt%, the mode-locked (ML) pulse is stabilized with the pulse duration of 543 and 443 fs, respectively. For a short pulse of 443 fs, the 3-dB spectral bandwidth and time-bandwidth product were 5.78 nm and 0.316, respectively.
{"title":"Concentration effect of dispersed-graphene based saturable absorber on stabilizing and shortening mode-locked pulse","authors":"Shr-Hau Huang, P. Huang, B. Hsieh, Hsin-Hui Kuo, Chao-Yung Yeh, Shau-Ching Lin, Jiang-Jen Lin, W. Cheng","doi":"10.1109/WOCC.2012.6198179","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198179","url":null,"abstract":"We investigated the concentration effect of dispersed graphene in polymer films for being a saturable absorber (SA) to optimize the mode locking performance of the Erbium-doped fiber (EDFL) laser pulse. With the concentrations of 1.65 and 3.25 wt%, the mode-locked (ML) pulse is stabilized with the pulse duration of 543 and 443 fs, respectively. For a short pulse of 443 fs, the 3-dB spectral bandwidth and time-bandwidth product were 5.78 nm and 0.316, respectively.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128799810","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 : 2012-04-19DOI: 10.1109/WOCC.2012.6198177
H. Sulaiman, M. Othman, M. M. Ismail, M. H. Misran
Simulating a signal propagation of wireless cognitive network has been widely accepted by researchers in order to come out with three-dimensional (3D) representation data display. Instead of using primitive way to understand the behavior of signal propagation, 3D visualization of wireless networking could also help researchers to study the limitation and exploration of wireless cognitive network deeply. In this paper, we would like to address the requirement and the potential of using 3D representation to visualize properly the wireless cognitive network. We also performed preliminary test of our 3D visualization system using OpenGL graphic library to visualize the propagation of signal travelling in specific room with several medium. The test has been conducted in order to understand the requirement of wireless cognitive network in 3D visualization before the actual system is built.
{"title":"Wireless network visualization in 3D virtual environment framework","authors":"H. Sulaiman, M. Othman, M. M. Ismail, M. H. Misran","doi":"10.1109/WOCC.2012.6198177","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198177","url":null,"abstract":"Simulating a signal propagation of wireless cognitive network has been widely accepted by researchers in order to come out with three-dimensional (3D) representation data display. Instead of using primitive way to understand the behavior of signal propagation, 3D visualization of wireless networking could also help researchers to study the limitation and exploration of wireless cognitive network deeply. In this paper, we would like to address the requirement and the potential of using 3D representation to visualize properly the wireless cognitive network. We also performed preliminary test of our 3D visualization system using OpenGL graphic library to visualize the propagation of signal travelling in specific room with several medium. The test has been conducted in order to understand the requirement of wireless cognitive network in 3D visualization before the actual system is built.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130767472","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 : 2012-04-01DOI: 10.1109/WOCC.2012.6198147
C. Liu
Ping and Traceroute utility has been a fundamental tool for a network service provider or an enterprise network operator to run its IPv4 network for various kinds of services, data/voice/video. However, it's known the returned result from IPv4 ping/traceroute tool cannot tell whether any link in a packet's path to its destination is congested. In this paper, a proposal to enhance IPv6 ping/traceroute utility is presented. The returned results of the enhanced IPv6 traceroute utility will carry information on link utilization of each intermediate hop. The information is particularly useful for Internet traffic crossing multiple autonomous systems and being sensitive to network congestion. Over-the-top video delivery and IP audio/video conferences are examples of QoS sensitive traffic crossing multiple ASNs in internet. The link utilization information from the enhanced IPv6 ping/traceroute tool can also be used in a measurement-based approach for dynamic QoS adaptation in wired-wireless networks. The enhanced ping/traceroute utility can also inform its user on the autonomous system number (ASN), interface ID and host/domain name of each intermediate hop. The latter capability will deem DNS and/or whois database queries based on returned IPv6 address unnecessary. In fact, the enhanced utility can be used to tell if DNS entry of a router interface is correct in DNS database. Error in DNS entry of a router interface is common due to re-IP, network migration or merger. It's known that DNS error can mislead a network operator when trouble shooting a network connectivity failure.
{"title":"Enhanced IPv6 ping and traceroute","authors":"C. Liu","doi":"10.1109/WOCC.2012.6198147","DOIUrl":"https://doi.org/10.1109/WOCC.2012.6198147","url":null,"abstract":"Ping and Traceroute utility has been a fundamental tool for a network service provider or an enterprise network operator to run its IPv4 network for various kinds of services, data/voice/video. However, it's known the returned result from IPv4 ping/traceroute tool cannot tell whether any link in a packet's path to its destination is congested. In this paper, a proposal to enhance IPv6 ping/traceroute utility is presented. The returned results of the enhanced IPv6 traceroute utility will carry information on link utilization of each intermediate hop. The information is particularly useful for Internet traffic crossing multiple autonomous systems and being sensitive to network congestion. Over-the-top video delivery and IP audio/video conferences are examples of QoS sensitive traffic crossing multiple ASNs in internet. The link utilization information from the enhanced IPv6 ping/traceroute tool can also be used in a measurement-based approach for dynamic QoS adaptation in wired-wireless networks. The enhanced ping/traceroute utility can also inform its user on the autonomous system number (ASN), interface ID and host/domain name of each intermediate hop. The latter capability will deem DNS and/or whois database queries based on returned IPv6 address unnecessary. In fact, the enhanced utility can be used to tell if DNS entry of a router interface is correct in DNS database. Error in DNS entry of a router interface is common due to re-IP, network migration or merger. It's known that DNS error can mislead a network operator when trouble shooting a network connectivity failure.","PeriodicalId":118220,"journal":{"name":"2012 21st Annual Wireless and Optical Communications Conference (WOCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129365928","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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