Pub Date : 2021-12-01DOI: 10.1109/ICVISP54630.2021.00018
Jiyong Zhang, T. Deng, Fei Yan, Wenbo Liu
Lane detection plays a more and more significant role in ensuring the safety of autonomous driving, Lane Departure Warning, etc. Although a lot of research has been conducted with innovative methods on lane detection, pursuing the high accuracy of lane detection in challenging scenarios is still an open research question. In this work, we present a robust lane detection model via dilated residual convolutions and spatio-temporal networks (DRSTNet). The dilated residual convolutions make our model have the ability to obtain richer and denser feature information by expanding the receptive fields of the convolutions, and provide our model with necessary supplements by skip connections. In addition, the spatio-temporal networks further enhance the learning ability of our model in extracting effective features by dealing with spatial and temporal information via convolutional gated recurrent units (ConvGRUs). Furthermore, a large number of experiments verify that our model outperforms the state-of-the-art algorithms while increasing the robustness and reducing the size of the weight parameter, achieving 81.35% on DET and 73.0% on CULane.
{"title":"DRSTNet: A Robust Spatio-temporal Network with Dilated Residual Convolutions for Lane Detection","authors":"Jiyong Zhang, T. Deng, Fei Yan, Wenbo Liu","doi":"10.1109/ICVISP54630.2021.00018","DOIUrl":"https://doi.org/10.1109/ICVISP54630.2021.00018","url":null,"abstract":"Lane detection plays a more and more significant role in ensuring the safety of autonomous driving, Lane Departure Warning, etc. Although a lot of research has been conducted with innovative methods on lane detection, pursuing the high accuracy of lane detection in challenging scenarios is still an open research question. In this work, we present a robust lane detection model via dilated residual convolutions and spatio-temporal networks (DRSTNet). The dilated residual convolutions make our model have the ability to obtain richer and denser feature information by expanding the receptive fields of the convolutions, and provide our model with necessary supplements by skip connections. In addition, the spatio-temporal networks further enhance the learning ability of our model in extracting effective features by dealing with spatial and temporal information via convolutional gated recurrent units (ConvGRUs). Furthermore, a large number of experiments verify that our model outperforms the state-of-the-art algorithms while increasing the robustness and reducing the size of the weight parameter, achieving 81.35% on DET and 73.0% on CULane.","PeriodicalId":296789,"journal":{"name":"2021 5th International Conference on Vision, Image and Signal Processing (ICVISP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129520867","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 : 2021-12-01DOI: 10.1109/ICVISP54630.2021.00039
Ines Amokrane, K. Ngo
Isolating and analyzing a single cell remains a challenging task in both biological and medical researches since the analysis at the single-cell level offers great potential in gaining a unique insight in cellular activity. The aim of this work is to develop a lab-on-chip device that consists in a fully integrated droplet-based microfluidics platform devoted to real-time and single-cell analysis and capable of performing a sequence of several steps such as single cell encapsulation, droplet characterization, droplet sorting, droplet trapping and the analysis of droplets of interest. Only the results of the first part of this project is presented in this paper, in which we present a simple and fast standard microelectronic technique to fabricate the microfluidic platform. In addition, we show the possibility to use the electrochemical impedance technique as an alternative to those based on optical methods to detect and characterize droplets flowing in a microfluidic channel.
{"title":"Development of a Droplet-Based Microfluidics Platform Toward Single-cell Analysis","authors":"Ines Amokrane, K. Ngo","doi":"10.1109/ICVISP54630.2021.00039","DOIUrl":"https://doi.org/10.1109/ICVISP54630.2021.00039","url":null,"abstract":"Isolating and analyzing a single cell remains a challenging task in both biological and medical researches since the analysis at the single-cell level offers great potential in gaining a unique insight in cellular activity. The aim of this work is to develop a lab-on-chip device that consists in a fully integrated droplet-based microfluidics platform devoted to real-time and single-cell analysis and capable of performing a sequence of several steps such as single cell encapsulation, droplet characterization, droplet sorting, droplet trapping and the analysis of droplets of interest. Only the results of the first part of this project is presented in this paper, in which we present a simple and fast standard microelectronic technique to fabricate the microfluidic platform. In addition, we show the possibility to use the electrochemical impedance technique as an alternative to those based on optical methods to detect and characterize droplets flowing in a microfluidic channel.","PeriodicalId":296789,"journal":{"name":"2021 5th International Conference on Vision, Image and Signal Processing (ICVISP)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116489887","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 : 2021-12-01DOI: 10.1109/ICVISP54630.2021.00044
Jing Xiao, T. Yuizono, H. Gokon
Variable canyon building morphology and neighborhood configurations affect pedestrian habits and comfort, and cold weather limits pedestrian mobility in the city. The orientation and aspect ratio of a canyon significantly affect the thermal comfort and microclimatic conditions of outdoor pedestrians. This study evaluated thermal comfort and microclimate conditions in an asymmetric canyon (aspect ratio $lt 0.5)$ within the East Square of Komatsu Station, Japan. The method combines ENVI-met numerical simulations and site measurements to derive thermal comfort ranges at the highest and lowest winter temperatures through the physiologically equivalent temperature (PET) thermal index. The results showed that the optimal comfort zone was on the south side of the E-W canyon, with a higher distribution of thermal comfort levels in the S-N orientation. The mean PET index was $17^{circ}mathrm{C}$ at the highest temperature, and it was $4.48^{circ}mathrm{C}$ at the lowest temperature. Meanwhile, there is a significant difference between the thermal comfort and mean radiation temperature (Tmrt) between day and night. Interestingly, the thermal comfort index PET distribution showed that the southern side of the seating area was consistent with the winter's optimal horizontal thermal comfort zone. The mean PET index was kept between $9.69^{circ}mathrm{C}$ and $11.77^{circ}mathrm{C}$, indicating that physiological stress at the moderate cold level in the asymmetric canyon (E-W direction) is challenging to maintain pedestrians' thermal balance and comfort in windy winter weather. As one of the typical urban canyon morphologies, the evaluation results of winter thermal comfort and microclimate in the asymmetric canyon will provide an important reference for the climate-sensitive design and planning of the local urban environment.
{"title":"Numerical Simulation of Winter Microclimate and Thermal Comfort of an Asymmetric Canyon in the Urban Square Area","authors":"Jing Xiao, T. Yuizono, H. Gokon","doi":"10.1109/ICVISP54630.2021.00044","DOIUrl":"https://doi.org/10.1109/ICVISP54630.2021.00044","url":null,"abstract":"Variable canyon building morphology and neighborhood configurations affect pedestrian habits and comfort, and cold weather limits pedestrian mobility in the city. The orientation and aspect ratio of a canyon significantly affect the thermal comfort and microclimatic conditions of outdoor pedestrians. This study evaluated thermal comfort and microclimate conditions in an asymmetric canyon (aspect ratio $lt 0.5)$ within the East Square of Komatsu Station, Japan. The method combines ENVI-met numerical simulations and site measurements to derive thermal comfort ranges at the highest and lowest winter temperatures through the physiologically equivalent temperature (PET) thermal index. The results showed that the optimal comfort zone was on the south side of the E-W canyon, with a higher distribution of thermal comfort levels in the S-N orientation. The mean PET index was $17^{circ}mathrm{C}$ at the highest temperature, and it was $4.48^{circ}mathrm{C}$ at the lowest temperature. Meanwhile, there is a significant difference between the thermal comfort and mean radiation temperature (Tmrt) between day and night. Interestingly, the thermal comfort index PET distribution showed that the southern side of the seating area was consistent with the winter's optimal horizontal thermal comfort zone. The mean PET index was kept between $9.69^{circ}mathrm{C}$ and $11.77^{circ}mathrm{C}$, indicating that physiological stress at the moderate cold level in the asymmetric canyon (E-W direction) is challenging to maintain pedestrians' thermal balance and comfort in windy winter weather. As one of the typical urban canyon morphologies, the evaluation results of winter thermal comfort and microclimate in the asymmetric canyon will provide an important reference for the climate-sensitive design and planning of the local urban environment.","PeriodicalId":296789,"journal":{"name":"2021 5th International Conference on Vision, Image and Signal Processing (ICVISP)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122234673","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 semi-physical marine engine room simulator is one of the necessary equipment for the training of marine engineers worldwide. However, its maintenance has become a problem for a long time due to its complexity and vulnerability. Although the semi-physical marine engine room simulator fails frequently, its failures are usually small-scale communication failures, which are easy to solve for experts. For such kind of micro faults, the cost of field maintenance by experts is very high due to the long journey. Generally, most manufactures will choose to assist the users’ maintenance by telephone or email firstly. If it does not work, they will have to send experts for field maintenance which is expensive for users. In this paper, we propose a digital twin architecture of the semi-physical marine engine room simulator to assist users in remote maintenance. The digital twin system is a multi-twins architecture consisting of the user digital twin and the manufacturer digital twin. The user digital twin is a technical guidance platform for information reception and display, through which the user can get technical adviser from the experts in the 3D virtual environment. The manufacture digital twin is a platform for monitoring and troubleshooting by experts. The communication faults are the main faults of the semi-physical marine engine room simulator, which are easy to monitor. Consequently, it is possible to realize remote maintenance assistance through the digital twin system without a lot of time cost and economic cost.
{"title":"A Digital Twin Based Design of the Semi-physical Marine Engine Room Simulator for Remote Maintenance Assistance","authors":"Yanghui Tan, Chunyang Niu, Hui Tian, Jun-dong Zhang","doi":"10.1109/ICVISP54630.2021.00032","DOIUrl":"https://doi.org/10.1109/ICVISP54630.2021.00032","url":null,"abstract":"The semi-physical marine engine room simulator is one of the necessary equipment for the training of marine engineers worldwide. However, its maintenance has become a problem for a long time due to its complexity and vulnerability. Although the semi-physical marine engine room simulator fails frequently, its failures are usually small-scale communication failures, which are easy to solve for experts. For such kind of micro faults, the cost of field maintenance by experts is very high due to the long journey. Generally, most manufactures will choose to assist the users’ maintenance by telephone or email firstly. If it does not work, they will have to send experts for field maintenance which is expensive for users. In this paper, we propose a digital twin architecture of the semi-physical marine engine room simulator to assist users in remote maintenance. The digital twin system is a multi-twins architecture consisting of the user digital twin and the manufacturer digital twin. The user digital twin is a technical guidance platform for information reception and display, through which the user can get technical adviser from the experts in the 3D virtual environment. The manufacture digital twin is a platform for monitoring and troubleshooting by experts. The communication faults are the main faults of the semi-physical marine engine room simulator, which are easy to monitor. Consequently, it is possible to realize remote maintenance assistance through the digital twin system without a lot of time cost and economic cost.","PeriodicalId":296789,"journal":{"name":"2021 5th International Conference on Vision, Image and Signal Processing (ICVISP)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115336925","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 : 2021-12-01DOI: 10.1109/ICVISP54630.2021.00051
Yongpeng Wu, Junna Gao
Most existing video-based 3D human pose estimation methods focus on single-scale spatial and temporal feature extraction. However, many human motions are only related to local joints, which suggests that we need to pay attention to the local pose of the human body for 3D pose estimation. In this paper, we propose a novel multi-scale spatial-temporal transformer framework to tackle the problem of 3D human pose estimation. Our framework mainly consists of two separate modules: a multi-scale spatial transformer module and a multiscale temporal transformer module. The first module is designed to enhance the spatial dependencies by the joint-level and part-level spatial transformers. The goal for the second module is to capture the temporal correlation of human pose by the local part-level and global whole-level temporal transformer. Then we apply a weight fusion module to predict accurate 3D human pose of the center frame. Experimental results show that our method achieves excellent performance.
{"title":"Multi-scale spatial-temporal transformer for 3D human pose estimation","authors":"Yongpeng Wu, Junna Gao","doi":"10.1109/ICVISP54630.2021.00051","DOIUrl":"https://doi.org/10.1109/ICVISP54630.2021.00051","url":null,"abstract":"Most existing video-based 3D human pose estimation methods focus on single-scale spatial and temporal feature extraction. However, many human motions are only related to local joints, which suggests that we need to pay attention to the local pose of the human body for 3D pose estimation. In this paper, we propose a novel multi-scale spatial-temporal transformer framework to tackle the problem of 3D human pose estimation. Our framework mainly consists of two separate modules: a multi-scale spatial transformer module and a multiscale temporal transformer module. The first module is designed to enhance the spatial dependencies by the joint-level and part-level spatial transformers. The goal for the second module is to capture the temporal correlation of human pose by the local part-level and global whole-level temporal transformer. Then we apply a weight fusion module to predict accurate 3D human pose of the center frame. Experimental results show that our method achieves excellent performance.","PeriodicalId":296789,"journal":{"name":"2021 5th International Conference on Vision, Image and Signal Processing (ICVISP)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125966033","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 : 2021-12-01DOI: 10.1109/ICVISP54630.2021.00012
Laurent Kloeker, Tobias Moers, Lennart Vater, A. Zlocki, L. Eckstein
The number of existing UAVs in the private and commercial sector has steadily increased in recent years and is expected to experience strong growth in the future. However, so far there is little research on the use of UAVs in connection with automated driving. In this paper, we first analyze existing research and the current state of the art in the use of UAVs in the transport sector. Then we list possible potentials how UAVs can be used in the field of automated driving. We focus on the four sub-areas of the transport sector a) surveillance, b) road user detection and tracking, c) wireless communication and V2X and d) infrastructure mapping. The elaborations show that the use of UAVs in all four sub-areas can contribute significantly to enable and safeguard automated driving. In sub-area a), UAVs for example can support intelligent parking space monitoring and enable functions such as automated valet parking. In sub-area b), UAVs are particularly suitable for collecting naturalistic trajectories of road users, which are stored as datasets and serve to develop and safeguard automated driving functions. By using UAVs in sub-area c), long distances can be bridged and new, previously unattainable areas can be made accessible for communication applications. Finally, UAVs can also be used in sub-area d) to easily map new areas or to improve and continuously update existing digital HD maps. It has been further shown in literature that UAVs are partly superior to conventional vehicle environment perception methods due to their low cost factor, their ease of use and especially due to their comparatively large area of sensor coverage.
{"title":"Utilization and Potentials of Unmanned Aerial Vehicles (UAVs) in the Field of Automated Driving: A Survey","authors":"Laurent Kloeker, Tobias Moers, Lennart Vater, A. Zlocki, L. Eckstein","doi":"10.1109/ICVISP54630.2021.00012","DOIUrl":"https://doi.org/10.1109/ICVISP54630.2021.00012","url":null,"abstract":"The number of existing UAVs in the private and commercial sector has steadily increased in recent years and is expected to experience strong growth in the future. However, so far there is little research on the use of UAVs in connection with automated driving. In this paper, we first analyze existing research and the current state of the art in the use of UAVs in the transport sector. Then we list possible potentials how UAVs can be used in the field of automated driving. We focus on the four sub-areas of the transport sector a) surveillance, b) road user detection and tracking, c) wireless communication and V2X and d) infrastructure mapping. The elaborations show that the use of UAVs in all four sub-areas can contribute significantly to enable and safeguard automated driving. In sub-area a), UAVs for example can support intelligent parking space monitoring and enable functions such as automated valet parking. In sub-area b), UAVs are particularly suitable for collecting naturalistic trajectories of road users, which are stored as datasets and serve to develop and safeguard automated driving functions. By using UAVs in sub-area c), long distances can be bridged and new, previously unattainable areas can be made accessible for communication applications. Finally, UAVs can also be used in sub-area d) to easily map new areas or to improve and continuously update existing digital HD maps. It has been further shown in literature that UAVs are partly superior to conventional vehicle environment perception methods due to their low cost factor, their ease of use and especially due to their comparatively large area of sensor coverage.","PeriodicalId":296789,"journal":{"name":"2021 5th International Conference on Vision, Image and Signal Processing (ICVISP)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116520058","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 : 2021-12-01DOI: 10.1109/ICVISP54630.2021.00048
Saharath Sanguanpong, Nantapath Trakultraipruk
Let D be a set of vertices of a graph G. Then D is called an induced-paired dominating set if every vertex in G is adjacent to some vertex in D and the subgraph induced by D contains only nonadjacent edges. The upper induced-paired domination number of G, denoted by $Gamma_{ip}(G)$, is the maximum cardinality of a minimal induced-paired dominating set of G. An induced-paired dominating set of cardinality $Gamma_{ip}(G)$ is called an $Gamma_{ip}(G)$-set. We introduce the $Gamma$-induced-paired dominating graph of G, denoted by $IPD_{Gamma}$, to be the graph whose vertex set is the set of all $Gamma_{ip}(G)$-sets, and two $Gamma_{ip}(G)$-sets are adjacent in $IPD_{Gamma}(G)$ if one can be obtained from the other by removing one vertex and adding another vertex of G. In this paper, we present the $Gamma$-induced-paired dominating graphs of all paths.
{"title":"Γ-induced-paired Dominating Graphs of Paths","authors":"Saharath Sanguanpong, Nantapath Trakultraipruk","doi":"10.1109/ICVISP54630.2021.00048","DOIUrl":"https://doi.org/10.1109/ICVISP54630.2021.00048","url":null,"abstract":"Let D be a set of vertices of a graph G. Then D is called an induced-paired dominating set if every vertex in G is adjacent to some vertex in D and the subgraph induced by D contains only nonadjacent edges. The upper induced-paired domination number of G, denoted by $Gamma_{ip}(G)$, is the maximum cardinality of a minimal induced-paired dominating set of G. An induced-paired dominating set of cardinality $Gamma_{ip}(G)$ is called an $Gamma_{ip}(G)$-set. We introduce the $Gamma$-induced-paired dominating graph of G, denoted by $IPD_{Gamma}$, to be the graph whose vertex set is the set of all $Gamma_{ip}(G)$-sets, and two $Gamma_{ip}(G)$-sets are adjacent in $IPD_{Gamma}(G)$ if one can be obtained from the other by removing one vertex and adding another vertex of G. In this paper, we present the $Gamma$-induced-paired dominating graphs of all paths.","PeriodicalId":296789,"journal":{"name":"2021 5th International Conference on Vision, Image and Signal Processing (ICVISP)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125412524","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 : 2021-12-01DOI: 10.1109/ICVISP54630.2021.00038
Qibin Zheng, Dongxue Zhao, J. Deng, Xiaoli Xu, Z. Ou
This study introduces a front-end electronics design for Micro-Pattern Gas Detectors based on VA140 chip. In this system, modular structure and scalable design concept is adopted. A data acquisition cell (DAQ Cell) integrates 16 VA140 chips processing 512 detector channels and numbers of DAQ Cells can be assembled and tailored to meet the needs of different scale requirements. The system based on VA140 has been assembled and tested with the MPGD detectors. Test results indicate that the INL of the VA140 based readout system is better than 1.5%, the equivalent noise charge is about 0.75 fC and 0.15 fC, with and without connecting to the detectors. The integration test results show that the VA140 based readout system works well with the MPGD detectors. An image of a slit has been achieved with a spatial resolution of about 235um.
{"title":"Front-end Electronics Design for Micro-Pattern Gas Detectors Based on VA140","authors":"Qibin Zheng, Dongxue Zhao, J. Deng, Xiaoli Xu, Z. Ou","doi":"10.1109/ICVISP54630.2021.00038","DOIUrl":"https://doi.org/10.1109/ICVISP54630.2021.00038","url":null,"abstract":"This study introduces a front-end electronics design for Micro-Pattern Gas Detectors based on VA140 chip. In this system, modular structure and scalable design concept is adopted. A data acquisition cell (DAQ Cell) integrates 16 VA140 chips processing 512 detector channels and numbers of DAQ Cells can be assembled and tailored to meet the needs of different scale requirements. The system based on VA140 has been assembled and tested with the MPGD detectors. Test results indicate that the INL of the VA140 based readout system is better than 1.5%, the equivalent noise charge is about 0.75 fC and 0.15 fC, with and without connecting to the detectors. The integration test results show that the VA140 based readout system works well with the MPGD detectors. An image of a slit has been achieved with a spatial resolution of about 235um.","PeriodicalId":296789,"journal":{"name":"2021 5th International Conference on Vision, Image and Signal Processing (ICVISP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120957665","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 : 2021-12-01DOI: 10.1109/ICVISP54630.2021.00036
Wuxing Zheng, T. Shao, Yingluo Wang
Clarifying the influence degree of various factors that affect human thermal sensation in free-running built environment, can provide quantitative control basis for indoor thermal environment creation and behavioral adjustment based on thermal sensation evaluation. To this end, the college student apartment buildings in Xi'an were selected as the survey location, and a thermal comfort field survey was conducted in the summer, and 1160 effective questionnaires were obtained; by analyzing the factors affecting human body heat balance, 7 parameters that affected the human thermal sensation under free-running conditions were screened out as index variables. Statistical regression method was used to establish a multi-factor comprehensive model of human thermal sensation (principal component regression model) for summer in Xi'an, and the scoring coefficient for each parameters in the model was also obtained; the predicted thermal sensation (PMTS) calculated by the comprehensive model was compared with the measured thermal sensation (MTS), and the fitting relationship of PMTS against indoor air temperature (t) was compared with that of MTS against t as well, the results show that the accuracy of the comprehensive model is fine; the influence of each factor on thermal sensation was quantified and compared, and then the priority way to improve the thermal comfort in summer in Xi'an for free-running buildings was obtained.
{"title":"A Multi-factor Comprehensive Model of Human Thermal Sensation in Free-running Built Environment in Summer in Xi'an, China","authors":"Wuxing Zheng, T. Shao, Yingluo Wang","doi":"10.1109/ICVISP54630.2021.00036","DOIUrl":"https://doi.org/10.1109/ICVISP54630.2021.00036","url":null,"abstract":"Clarifying the influence degree of various factors that affect human thermal sensation in free-running built environment, can provide quantitative control basis for indoor thermal environment creation and behavioral adjustment based on thermal sensation evaluation. To this end, the college student apartment buildings in Xi'an were selected as the survey location, and a thermal comfort field survey was conducted in the summer, and 1160 effective questionnaires were obtained; by analyzing the factors affecting human body heat balance, 7 parameters that affected the human thermal sensation under free-running conditions were screened out as index variables. Statistical regression method was used to establish a multi-factor comprehensive model of human thermal sensation (principal component regression model) for summer in Xi'an, and the scoring coefficient for each parameters in the model was also obtained; the predicted thermal sensation (PMTS) calculated by the comprehensive model was compared with the measured thermal sensation (MTS), and the fitting relationship of PMTS against indoor air temperature (t) was compared with that of MTS against t as well, the results show that the accuracy of the comprehensive model is fine; the influence of each factor on thermal sensation was quantified and compared, and then the priority way to improve the thermal comfort in summer in Xi'an for free-running buildings was obtained.","PeriodicalId":296789,"journal":{"name":"2021 5th International Conference on Vision, Image and Signal Processing (ICVISP)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128553821","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 : 2021-12-01DOI: 10.1109/ICVISP54630.2021.00055
Luo Xiaokui, Sun Haiyang, Zhang Ning, Zhijun Han, Bi Jingjian
As aspheric mirrors are more and more widely used in aerospace remote sensors, the detection technology of aspheric surface shape and geometric parameters has become more and more important. At present, the surface form deviation before the mirror polishing process and the geometric parameters such as the curvature radius of the mirror vertex and the off-axis amount after the mirror processing are completed are mainly performed by using a coordinate measuring machine, according to the theoretical equation or three-dimensional model of the aspheric surface. The mirror surface is automatically measured to obtain the three-coordinate data of the actual point on the mirror surface, and finally obtained through data fitting processing. They are an important basis for determining the subsequent processing parameters and debugging of the optical system. This paper elaborates on the three-coordinate measurement method in terms of measurement principle, measurement plan formulation, measurement procedure, data processing and measurement uncertainty analysis. At present, it is mature and effective, and is widely used in engineering practice.
{"title":"A Three-coordinate Measuring Method for the Surface Shape and Geometric Parameters of Aspheric Mirrors","authors":"Luo Xiaokui, Sun Haiyang, Zhang Ning, Zhijun Han, Bi Jingjian","doi":"10.1109/ICVISP54630.2021.00055","DOIUrl":"https://doi.org/10.1109/ICVISP54630.2021.00055","url":null,"abstract":"As aspheric mirrors are more and more widely used in aerospace remote sensors, the detection technology of aspheric surface shape and geometric parameters has become more and more important. At present, the surface form deviation before the mirror polishing process and the geometric parameters such as the curvature radius of the mirror vertex and the off-axis amount after the mirror processing are completed are mainly performed by using a coordinate measuring machine, according to the theoretical equation or three-dimensional model of the aspheric surface. The mirror surface is automatically measured to obtain the three-coordinate data of the actual point on the mirror surface, and finally obtained through data fitting processing. They are an important basis for determining the subsequent processing parameters and debugging of the optical system. This paper elaborates on the three-coordinate measurement method in terms of measurement principle, measurement plan formulation, measurement procedure, data processing and measurement uncertainty analysis. At present, it is mature and effective, and is widely used in engineering practice.","PeriodicalId":296789,"journal":{"name":"2021 5th International Conference on Vision, Image and Signal Processing (ICVISP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131237373","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：