Maps based on virtual reality(VR)are evolving and are being increasingly used in the field of geography.However,the advantages of VR based on the map use processes of users over desktop-based environments(DEs)are not ...Maps based on virtual reality(VR)are evolving and are being increasingly used in the field of geography.However,the advantages of VR based on the map use processes of users over desktop-based environments(DEs)are not fully understood.In this study,an experiment was conducted in which 120 participants performed map use tasks using maps and globes in VR and DE.The participants’eye movements and questionnaires were collected to compare the map use performance differences.We analyzed the general metrics,information searching and processing metrics of participants(e.g.response time,RT;average fixation duration,AFD;average saccade duration,ASD;saccade frequency,SF,etc.)using maps and globes in different environments.We found that the participants using VR processed information more efficiently(AFDDE=233.34 ms,AFDVR=173.09 ms),and the participants using DE had both a significantly shorter response time(RT_(DE)=88.68 s,RT_(VR)=124.05 s)and a shorter visual search time(ASD_(DE)=60.78 ms,ASD_(VR)=112.13 ms;SF_(DE)=6.30,SF_(VR)=2.07).We also found similarities in accuracy,satisfaction and readability.These results are helpful for designing VR maps that can adapt to human cognition and reflect the advantages of VR.展开更多
【研究目的】为全面提升吉林省地质环境信息服务能力,解决地质环境数据存储分散、缺乏数据共享服务机制和综合分析能力弱等诸多问题,采用“大综合、大集成、大融合”的理念,研发了吉林省地质环境信息数据共享和服务平台。【研究方法】...【研究目的】为全面提升吉林省地质环境信息服务能力,解决地质环境数据存储分散、缺乏数据共享服务机制和综合分析能力弱等诸多问题,采用“大综合、大集成、大融合”的理念,研发了吉林省地质环境信息数据共享和服务平台。【研究方法】平台以面向服务架构(Service-Oriented Architecture,SOA)为总体框架,在.Net、地理信息系统(Geographic Information System,GIS)、虚拟现实(Virtual Reality,VR)、数据库等技术的支撑下,基于哈希格网改进的椭球四叉树空间索引和切片数据库构建技术、SOA和WCF地质环境大数据共享与服务技术、C/S和B/S模式信息系统集成等关键技术综合研发而成。【研究结果】平台高度整合集成地质环境调查监测和综合评价数据,规范化地质环境数据从生产、汇交、整合、管理、更新、共享到应用的全过程,采用工作系统、服务系统、科普系统的个性化功能提升地质环境数据服务的专业性与普适性,并基于VR技术和地质环境交叉研究提升地质环境数据应用的广度与深度。【结论】平台较大程度提升了地质环境成果转化的科技创新能力和现代化水平,对精准服务地质环境调查、监测、保护和地质灾害防治具有重要意义。展开更多
基金supported by National Natural Science Foundation of China:[Grant Number No.41871366]National Key Research and Development Program of China:[Grant Number No.2017YFB0503602].
文摘Maps based on virtual reality(VR)are evolving and are being increasingly used in the field of geography.However,the advantages of VR based on the map use processes of users over desktop-based environments(DEs)are not fully understood.In this study,an experiment was conducted in which 120 participants performed map use tasks using maps and globes in VR and DE.The participants’eye movements and questionnaires were collected to compare the map use performance differences.We analyzed the general metrics,information searching and processing metrics of participants(e.g.response time,RT;average fixation duration,AFD;average saccade duration,ASD;saccade frequency,SF,etc.)using maps and globes in different environments.We found that the participants using VR processed information more efficiently(AFDDE=233.34 ms,AFDVR=173.09 ms),and the participants using DE had both a significantly shorter response time(RT_(DE)=88.68 s,RT_(VR)=124.05 s)and a shorter visual search time(ASD_(DE)=60.78 ms,ASD_(VR)=112.13 ms;SF_(DE)=6.30,SF_(VR)=2.07).We also found similarities in accuracy,satisfaction and readability.These results are helpful for designing VR maps that can adapt to human cognition and reflect the advantages of VR.
文摘【研究目的】为全面提升吉林省地质环境信息服务能力,解决地质环境数据存储分散、缺乏数据共享服务机制和综合分析能力弱等诸多问题,采用“大综合、大集成、大融合”的理念,研发了吉林省地质环境信息数据共享和服务平台。【研究方法】平台以面向服务架构(Service-Oriented Architecture,SOA)为总体框架,在.Net、地理信息系统(Geographic Information System,GIS)、虚拟现实(Virtual Reality,VR)、数据库等技术的支撑下,基于哈希格网改进的椭球四叉树空间索引和切片数据库构建技术、SOA和WCF地质环境大数据共享与服务技术、C/S和B/S模式信息系统集成等关键技术综合研发而成。【研究结果】平台高度整合集成地质环境调查监测和综合评价数据,规范化地质环境数据从生产、汇交、整合、管理、更新、共享到应用的全过程,采用工作系统、服务系统、科普系统的个性化功能提升地质环境数据服务的专业性与普适性,并基于VR技术和地质环境交叉研究提升地质环境数据应用的广度与深度。【结论】平台较大程度提升了地质环境成果转化的科技创新能力和现代化水平,对精准服务地质环境调查、监测、保护和地质灾害防治具有重要意义。
