The spatial configuration of historical canal villages and towns is crucial to their overall structural framework.Moreover,it serves as a fundamental element in the manifestation of architectural style,the promotion o...The spatial configuration of historical canal villages and towns is crucial to their overall structural framework.Moreover,it serves as a fundamental element in the manifestation of architectural style,the promotion of vitality,and the enhancement of environmental conditions.This study used Google Maps and field research to examine the spatial perception of Xiangxi Pushi Ancient Town by analyzing node space,street space components,and visual data.It investigates the spatial structure characteristics of ancient canal villages and towns at three levels:point-like space,line-like space,and point-line association.Furthermore,this study evaluates these characteristics based on three perspectives:macroscopic,mesoscopic,and microscopic.The text subsequently elucidates its formation mechanism,along with the cultural aspects of watersheds following the construction of canals.The results showed that the point space of Pushi Ancient Town is relatively complete;however,the overall structure is loose,and the core is not strong.The linear space utilizes the main street as its framework,while certain internal and external streets and lanes have isolation and insufficient connectivity.Simultaneously,some important nodes are marginalized,and the connectivity and overall synergy between the point and line spaces require improvement.This study provides a theoretical foundation and practical reference for examining the sustainable development of villages and towns,as well as watershed culture in the post-canal era.展开更多
Efficient perception of the real world is a long-standing effort of computer vision.Mod⁃ern visual computing techniques have succeeded in attaching semantic labels to thousands of daily objects and reconstructing dens...Efficient perception of the real world is a long-standing effort of computer vision.Mod⁃ern visual computing techniques have succeeded in attaching semantic labels to thousands of daily objects and reconstructing dense depth maps of complex scenes.However,simultaneous se⁃mantic and spatial joint perception,so-called dense 3D semantic mapping,estimating the 3D ge⁃ometry of a scene and attaching semantic labels to the geometry,remains a challenging problem that,if solved,would make structured vision understanding and editing more widely accessible.Concurrently,progress in computer vision and machine learning has motivated us to pursue the capability of understanding and digitally reconstructing the surrounding world.Neural metric-se⁃mantic understanding is a new and rapidly emerging field that combines differentiable machine learning techniques with physical knowledge from computer vision,e.g.,the integration of visualinertial simultaneous localization and mapping(SLAM),mesh reconstruction,and semantic un⁃derstanding.In this paper,we attempt to summarize the recent trends and applications of neural metric-semantic understanding.Starting with an overview of the underlying computer vision and machine learning concepts,we discuss critical aspects of such perception approaches.Specifical⁃ly,our emphasis is on fully leveraging the joint semantic and 3D information.Later on,many im⁃portant applications of the perception capability such as novel view synthesis and semantic aug⁃mented reality(AR)contents manipulation are also presented.Finally,we conclude with a dis⁃cussion of the technical implications of the technology under a 5G edge computing scenario.展开更多
The experience of interior space is profoundly shaped by the interplay of various sensory inputs.Despite this,soundscape design remains an underexplored avenue for enhancing spatial experience in built environments.Us...The experience of interior space is profoundly shaped by the interplay of various sensory inputs.Despite this,soundscape design remains an underexplored avenue for enhancing spatial experience in built environments.Using virtual reality technology,this study simulated how musical soundscape,including objective musical attributes(mode,tempo,reverberation time—RT),and subjective music evaluations,affect spatial perception and roaming behavior within exhibition spaces featuring diverse layouts.The key findings are as follows:(1)The explanatory contributions of music attributes and subjective evaluations vary across different spatial perceptual dimensions.For instance,major mode and slow tempo significantly enhance spatial scale perception,whereas music familiarity plays a role in influencing spatial legibility.(2)Visual factors have an inherent effect on spatial perception,with significant impacts on spatial scale,fluidity,abundance,and legibility.(3)Music influences spatial perception across different layouts,and its mediating effects on roaming behavior differ.For instance,in axial spaces,increasing spatial abundance positively impacts roaming time and range,with RT conditions playing a key role.In shape-contrast spaces,spatial legibility significantly influences roaming range,with mode and familiarity affecting the results.This study provides a comprehensive exploration of the complex interactions between music,spatial perception,and human behavior,offering valuable insights for future soundscape design.展开更多
Since the twenty-first century,with the rapid development of high-resolution earth observation satellites,the earth observation satellite system has developed from the initial single satellite observation model to the...Since the twenty-first century,with the rapid development of high-resolution earth observation satellites,the earth observation satellite system has developed from the initial single satellite observation model to the current satellite constellation formed by light and small satellites observation model.All-weather and all-directional fine earth observation can now be realized.In the future,the satellite constellation,communication satellites,navigation satellites,and aircrafts are linked through dynamic linking network to form an air-space information network to realize real-time services of intelligent air-space information.To further enhance the perception,cognition,and quick response ability of the network,we propose the concept and model of the Earth Observation Brain(EOB)−the intelligent earth system based on events perception in this paper.Then,some key technologies needed to be solved in the EOB are also described.An application example is illustrated to show the process of perception and cognition in the primary stage of the EOB.In the future,EOB can observe what change of what object,the when and where to push these right information to mobile terminal of right people at the right time and right place.Global users can obtain any data,information,and knowledge in real-time through the EOB.展开更多
With the rapid development of rail transit,effectively developing urban underground space(UUS)in the metro zone has become an important approach to expanding urban space.However,UUS is currently facing problems,such a...With the rapid development of rail transit,effectively developing urban underground space(UUS)in the metro zone has become an important approach to expanding urban space.However,UUS is currently facing problems,such as an uneven distribution or even loss of vitality,which restricts the utilization efficiency of the space.Thus,we established a UUS environmental assessment system based on the‘‘comfort-aesthetic-function-traffic-structure”using space syntax,instrumental measurement,and questionnaire surveys.By constructing a partial-least-square structural equation model,the internal relationships between the UUS environment and corresponding space vitality and space perception under different study areas,namely the underground transportation-oriented space(transportation space for short)and the underground commercial-oriented space(commercial space for short),were studied in detail throughout the working day.Results indicate the following:(1)the UUS in the metro zone environment influences spatial vitality.The vitality distribution of transportation space is significantly affected by the spatial traffic and structure.The vitality distribution of commercial space is significantly affected by the spatial function and traffic.(2)The environment of UUSs in the metro zone influences users’s perception.The perception of transportation space is significantly affected by aesthetics and comfort.The perception of commercial space is significantly affected by aesthetic,comfort,and spatial functions.(3)The user’s perception affects vitality,and the effect is more significant in commercial space.This study provides an in-depth understanding of the relationship between the complex environment and its spatial vitality as well as the spatial perception of the UUS in metro zones.Our research results provide a novel approach and theoretical basis for the development and application of UUS vitality in various cities.展开更多
Background:Recent developments in virtual acoustic technology has levered promising applications in the field of auditory sciences,especially in spatial perception.While conventional auditory spatial assessment using ...Background:Recent developments in virtual acoustic technology has levered promising applications in the field of auditory sciences,especially in spatial perception.While conventional auditory spatial assessment using loudspeakers,interaural differences and/or questionnaires are limited by the availability and cost of instruments,the use of virtual acoustic space identification(VASI)test has widespread applications in spatial test battery as it overcomes these constraints.Purpose:The lack of test-retest reliability data of VASI test narrows its direct application in auditory spatial assessment,which is explored in the present study.Methods:Data from 75 normal-hearing young adults(mean age:25.11 y±4.65 SD)was collected in three sessions:baseline,within 15 min of baseline(intra-session),and one week after baseline session(inter-session).Test-retest reliability was assessed using the intra-class correlation coefficient(ICC),coefficient of variation(CV),and cluster plots.Results:The results showed excellent reliability for both accuracy and reaction time measures of VASI,with ICC values of 0.93 and 0.87,respectively.The CV values for overall VASI accuracy and reaction time 9.66% and 11.88%,respectively.This was also complemented by the cluster plot analyses,which showed 93.33% and 96.00% of temporal stability in the accuracy and reaction time measures,indicative of high test-retest reliability of VASI test in auditory spatial assessment.Conclusions:The high temporal stability(test-retest reliability)of VASI test validates its application in spatial hearing test battery.展开更多
What defines an ideal home?Perhaps it is gentle morning light streaming through big floor-to-ceiling windows,the comfort of a spacious and well-designed living room filled with laughter or a quiet bedroom that offers ...What defines an ideal home?Perhaps it is gentle morning light streaming through big floor-to-ceiling windows,the comfort of a spacious and well-designed living room filled with laughter or a quiet bedroom that offers sanctuary from the outside world.Among the many architectural elements that shape our living experiences,ceiling height plays a crucial role,affecting everything from air circulation to spatial perception.展开更多
基金The Humanities and Social Science Research Youth Fund Project of Ministry of Education(23YJC850017)The Key Project of Teaching Research and Reform in Hunan Province(HNJG-2022-0094)The Research Project on Degree and Graduate Teaching Reform at Changsha University of Science and Technology(1205015)。
文摘The spatial configuration of historical canal villages and towns is crucial to their overall structural framework.Moreover,it serves as a fundamental element in the manifestation of architectural style,the promotion of vitality,and the enhancement of environmental conditions.This study used Google Maps and field research to examine the spatial perception of Xiangxi Pushi Ancient Town by analyzing node space,street space components,and visual data.It investigates the spatial structure characteristics of ancient canal villages and towns at three levels:point-like space,line-like space,and point-line association.Furthermore,this study evaluates these characteristics based on three perspectives:macroscopic,mesoscopic,and microscopic.The text subsequently elucidates its formation mechanism,along with the cultural aspects of watersheds following the construction of canals.The results showed that the point space of Pushi Ancient Town is relatively complete;however,the overall structure is loose,and the core is not strong.The linear space utilizes the main street as its framework,while certain internal and external streets and lanes have isolation and insufficient connectivity.Simultaneously,some important nodes are marginalized,and the connectivity and overall synergy between the point and line spaces require improvement.This study provides a theoretical foundation and practical reference for examining the sustainable development of villages and towns,as well as watershed culture in the post-canal era.
文摘Efficient perception of the real world is a long-standing effort of computer vision.Mod⁃ern visual computing techniques have succeeded in attaching semantic labels to thousands of daily objects and reconstructing dense depth maps of complex scenes.However,simultaneous se⁃mantic and spatial joint perception,so-called dense 3D semantic mapping,estimating the 3D ge⁃ometry of a scene and attaching semantic labels to the geometry,remains a challenging problem that,if solved,would make structured vision understanding and editing more widely accessible.Concurrently,progress in computer vision and machine learning has motivated us to pursue the capability of understanding and digitally reconstructing the surrounding world.Neural metric-se⁃mantic understanding is a new and rapidly emerging field that combines differentiable machine learning techniques with physical knowledge from computer vision,e.g.,the integration of visualinertial simultaneous localization and mapping(SLAM),mesh reconstruction,and semantic un⁃derstanding.In this paper,we attempt to summarize the recent trends and applications of neural metric-semantic understanding.Starting with an overview of the underlying computer vision and machine learning concepts,we discuss critical aspects of such perception approaches.Specifical⁃ly,our emphasis is on fully leveraging the joint semantic and 3D information.Later on,many im⁃portant applications of the perception capability such as novel view synthesis and semantic aug⁃mented reality(AR)contents manipulation are also presented.Finally,we conclude with a dis⁃cussion of the technical implications of the technology under a 5G edge computing scenario.
基金supported by the National Natural Science Foundation of China(NSFC)(Grant Number 52478083,52308089,52208101)Shanghai Engineering Research Center of Urban Environmental Noise Control(Grant Number UENC-202404).
文摘The experience of interior space is profoundly shaped by the interplay of various sensory inputs.Despite this,soundscape design remains an underexplored avenue for enhancing spatial experience in built environments.Using virtual reality technology,this study simulated how musical soundscape,including objective musical attributes(mode,tempo,reverberation time—RT),and subjective music evaluations,affect spatial perception and roaming behavior within exhibition spaces featuring diverse layouts.The key findings are as follows:(1)The explanatory contributions of music attributes and subjective evaluations vary across different spatial perceptual dimensions.For instance,major mode and slow tempo significantly enhance spatial scale perception,whereas music familiarity plays a role in influencing spatial legibility.(2)Visual factors have an inherent effect on spatial perception,with significant impacts on spatial scale,fluidity,abundance,and legibility.(3)Music influences spatial perception across different layouts,and its mediating effects on roaming behavior differ.For instance,in axial spaces,increasing spatial abundance positively impacts roaming time and range,with RT conditions playing a key role.In shape-contrast spaces,spatial legibility significantly influences roaming range,with mode and familiarity affecting the results.This study provides a comprehensive exploration of the complex interactions between music,spatial perception,and human behavior,offering valuable insights for future soundscape design.
基金substantially supported by the National Natural Science Foundation of China[grant number 91438203]the National Basic Research Program of China(973 Program)[grant number 2014CB744201].
文摘Since the twenty-first century,with the rapid development of high-resolution earth observation satellites,the earth observation satellite system has developed from the initial single satellite observation model to the current satellite constellation formed by light and small satellites observation model.All-weather and all-directional fine earth observation can now be realized.In the future,the satellite constellation,communication satellites,navigation satellites,and aircrafts are linked through dynamic linking network to form an air-space information network to realize real-time services of intelligent air-space information.To further enhance the perception,cognition,and quick response ability of the network,we propose the concept and model of the Earth Observation Brain(EOB)−the intelligent earth system based on events perception in this paper.Then,some key technologies needed to be solved in the EOB are also described.An application example is illustrated to show the process of perception and cognition in the primary stage of the EOB.In the future,EOB can observe what change of what object,the when and where to push these right information to mobile terminal of right people at the right time and right place.Global users can obtain any data,information,and knowledge in real-time through the EOB.
基金supported by the Natural Science Research Project of Anhui Educational Committee,China(Grant No.2022AH050845)Major project of the National Natural Science Foundation of China(Grant No.52090080)+6 种基金Special project of Chinese Academy of Engineering and National Natural Science Foundation of China(Grant No.L1924061)Teaching Research Project in Anhui Province,China(Grant No.2020jyxm1819)Scientific Research Foundation for High-level Talents of Anhui University of Science and Technology,China(Grant No.2022yjrc83)Humanity and Social Science Research Project of Anhui Educational Committee,China(Grant No.SK2021A0211)Anhui Province Science and Technology Plan Project of Housing Urban-rural Construction,China(Grant Nos.2020-YF12 and 2020-YF14)Major Science and Technology Projects of Guangdong Province,China(Grant No.192019071811500001)the Research Project of Huainan Science and Technology Bureau,China(Grant No.2020141).
文摘With the rapid development of rail transit,effectively developing urban underground space(UUS)in the metro zone has become an important approach to expanding urban space.However,UUS is currently facing problems,such as an uneven distribution or even loss of vitality,which restricts the utilization efficiency of the space.Thus,we established a UUS environmental assessment system based on the‘‘comfort-aesthetic-function-traffic-structure”using space syntax,instrumental measurement,and questionnaire surveys.By constructing a partial-least-square structural equation model,the internal relationships between the UUS environment and corresponding space vitality and space perception under different study areas,namely the underground transportation-oriented space(transportation space for short)and the underground commercial-oriented space(commercial space for short),were studied in detail throughout the working day.Results indicate the following:(1)the UUS in the metro zone environment influences spatial vitality.The vitality distribution of transportation space is significantly affected by the spatial traffic and structure.The vitality distribution of commercial space is significantly affected by the spatial function and traffic.(2)The environment of UUSs in the metro zone influences users’s perception.The perception of transportation space is significantly affected by aesthetics and comfort.The perception of commercial space is significantly affected by aesthetic,comfort,and spatial functions.(3)The user’s perception affects vitality,and the effect is more significant in commercial space.This study provides an in-depth understanding of the relationship between the complex environment and its spatial vitality as well as the spatial perception of the UUS in metro zones.Our research results provide a novel approach and theoretical basis for the development and application of UUS vitality in various cities.
文摘Background:Recent developments in virtual acoustic technology has levered promising applications in the field of auditory sciences,especially in spatial perception.While conventional auditory spatial assessment using loudspeakers,interaural differences and/or questionnaires are limited by the availability and cost of instruments,the use of virtual acoustic space identification(VASI)test has widespread applications in spatial test battery as it overcomes these constraints.Purpose:The lack of test-retest reliability data of VASI test narrows its direct application in auditory spatial assessment,which is explored in the present study.Methods:Data from 75 normal-hearing young adults(mean age:25.11 y±4.65 SD)was collected in three sessions:baseline,within 15 min of baseline(intra-session),and one week after baseline session(inter-session).Test-retest reliability was assessed using the intra-class correlation coefficient(ICC),coefficient of variation(CV),and cluster plots.Results:The results showed excellent reliability for both accuracy and reaction time measures of VASI,with ICC values of 0.93 and 0.87,respectively.The CV values for overall VASI accuracy and reaction time 9.66% and 11.88%,respectively.This was also complemented by the cluster plot analyses,which showed 93.33% and 96.00% of temporal stability in the accuracy and reaction time measures,indicative of high test-retest reliability of VASI test in auditory spatial assessment.Conclusions:The high temporal stability(test-retest reliability)of VASI test validates its application in spatial hearing test battery.
文摘What defines an ideal home?Perhaps it is gentle morning light streaming through big floor-to-ceiling windows,the comfort of a spacious and well-designed living room filled with laughter or a quiet bedroom that offers sanctuary from the outside world.Among the many architectural elements that shape our living experiences,ceiling height plays a crucial role,affecting everything from air circulation to spatial perception.
