By using evacuation simulation technology and taking North China University of Technology as an example,the barrier-free evacuation design scheme for groups with different needs in campus environment was deeply discus...By using evacuation simulation technology and taking North China University of Technology as an example,the barrier-free evacuation design scheme for groups with different needs in campus environment was deeply discussed.Based on the data of building layout,population composition,road system and distribution of shelters in the school,a detailed evacuation model was constructed in the Pathfinder emergency evacuation simulation system.By the simulation during the daytime and at night,the total evacuation time of the whole school,evacuation completion time of each building,selection of evacuation paths and shelter utilization were analyzed in detail.The simulation results show that the distribution of shelters on campus is uneven,and their capacity is limited.As a result,the evacuation paths of the disabled,the elderly and children need to be adjusted frequently,which affects the overall evacuation efficiency.In view of this,the optimization strategies of road renovation and entrances of shelters and buildings were put forward from the perspective of space planning.From the perspective of emergency management,it is suggested to improve the campus evacuation infrastructure and strengthen the evacuation drill for teachers and students.These results provide a solid theoretical support for enhancing the construction of campus barrier-free environment and improving the level of emergency management.展开更多
Aiming at the noise disturbance of unwrapping phases of control points in the camera-projector calibration system, a random sample consensus(RANSAC) based plane fitting method is proposed to filter the phase noise in ...Aiming at the noise disturbance of unwrapping phases of control points in the camera-projector calibration system, a random sample consensus(RANSAC) based plane fitting method is proposed to filter the phase noise in this paper. Different from the classical least squares method using all data, the points with noise will not be used to fit the plane in the proposed RANSAC method, which improves the accuracy of plane fitting. The proposed method suits for any two-dimensional(2D) calibration patterns, such as checkerboard or black dots with white background, which improves the flexibility of camera-projector system calibration.展开更多
基金Innovation and Entrepreneurship Training Project for College Students in Beijing(10805136024-XN139-100)Scientific Research Foundation of North China University of Technology(11005136024XN147-56)Yuxiu Innovation Project of North China University of Technology(2024NCUTYXCX214).
文摘By using evacuation simulation technology and taking North China University of Technology as an example,the barrier-free evacuation design scheme for groups with different needs in campus environment was deeply discussed.Based on the data of building layout,population composition,road system and distribution of shelters in the school,a detailed evacuation model was constructed in the Pathfinder emergency evacuation simulation system.By the simulation during the daytime and at night,the total evacuation time of the whole school,evacuation completion time of each building,selection of evacuation paths and shelter utilization were analyzed in detail.The simulation results show that the distribution of shelters on campus is uneven,and their capacity is limited.As a result,the evacuation paths of the disabled,the elderly and children need to be adjusted frequently,which affects the overall evacuation efficiency.In view of this,the optimization strategies of road renovation and entrances of shelters and buildings were put forward from the perspective of space planning.From the perspective of emergency management,it is suggested to improve the campus evacuation infrastructure and strengthen the evacuation drill for teachers and students.These results provide a solid theoretical support for enhancing the construction of campus barrier-free environment and improving the level of emergency management.
基金supported by the Guangxi Science and Technology Base and Special Talents Program(No.2018AD19077)the Guangxi Innovation and Driving Development Special Funds Project(No.AA18118002-3)the Guangxi Natural Science Foundation(No.2018JA170110)。
文摘Aiming at the noise disturbance of unwrapping phases of control points in the camera-projector calibration system, a random sample consensus(RANSAC) based plane fitting method is proposed to filter the phase noise in this paper. Different from the classical least squares method using all data, the points with noise will not be used to fit the plane in the proposed RANSAC method, which improves the accuracy of plane fitting. The proposed method suits for any two-dimensional(2D) calibration patterns, such as checkerboard or black dots with white background, which improves the flexibility of camera-projector system calibration.
