With the development of stereoscopic technology, more attention is attracted on the stereoscopic three-dimensional(S3 D) content and service, and researches on images and videos have emerged in large numbers. This pap...With the development of stereoscopic technology, more attention is attracted on the stereoscopic three-dimensional(S3 D) content and service, and researches on images and videos have emerged in large numbers. This paper focuses mainly on visual comfort affected by characteristics of disparity for multiple objects. To find the relationship between disparity distribution and visual comfort perception, several subject evaluation experiments are done. The study contains two spatial distribution types of disparity: 1) only one of the foreground objects has zero disparity; 2) one of the foreground objects has positive disparity, while the other one has negative disparity. The experimental results and relative regression analysis provide appropriate relationship between disparity distribution and visual comfort for both conditions, which is significant to meet the applicant field in S3 D content acquisition, display adjustment and quality evaluation.展开更多
PeopLe＇s visual perception and recognition of urban coLorscape tones change significantly in hazy weather. A psychoLogicaL experiment is conducted in this study to investigate visual comfort related to commercial and...PeopLe＇s visual perception and recognition of urban coLorscape tones change significantly in hazy weather. A psychoLogicaL experiment is conducted in this study to investigate visual comfort related to commercial and residential buildings. Visual observations are performed on the tones of an urban coLorscape during hazy weather and air poLLution in Harbin, China. Fifty-eight color samples selected through an orthogonaL method are evaluated through a Ukert scale by 30 subjects in a Laboratory setting. Statistical analysis is performed with the maximal information coefficient and R Language. Experimental results show that the changing threshold values of color tones are related to the visual comfort LeveLs of the subjects. The influence of the three factors of color tones on visual comfort Level is reLativeLy independent, and the effects of value and chroma contrast on color comfort Level are greater than that of hue contrast in hazy weather. Furthermore, the comfort recognition threshold values of color tones in hazy weather are determined through data comparisons and analyses.展开更多
The architectural form of the façade determines its identity as well as interactions with micro-climate forces of the ambient environment,such as solar radiation.The dynamic nature of daylight and occupants’posi...The architectural form of the façade determines its identity as well as interactions with micro-climate forces of the ambient environment,such as solar radiation.The dynamic nature of daylight and occupants’positions can cause some issues such as heat gains and visual discomfort,which need to be controlled in real-time operation.Improving daylight performance and preventing visual discomfort for multiple occupants simultaneously is challenging.However,integrating the biomimicry principles of morphological adaptation with dynamic,complex fenestration,and human-in-loop systems can lead us to find an optimal solution.This research builds on relevant literature study,biomimicry morphological approaches,and parametric simulations,to develop a bio-inspired interactive kinetic façade for improving multiple occupants’visual comfort simultaneously,inspired by plant’s stomata movement and behavior principles.Learning from the transitory stage and hunting new position of stomata’s patchy patterns,leads us to identify the dynamic transitory-sensitive area of attraction point on the façade that is triggered by the dynamic sun-timing position and multiple occupants.The annual climate-based metrics and luminance-based metric simulation results of 810 bioinspired interactive kinetic façade alternatives prove that the elastic-deformable-complexkinetic form triggered by the dynamic transitory-sensitive area can improve the visual comfort of multiple occupants simultaneously.In particular,the bio-inspired interactive kinetic façade with grid division 8x1 displays extraordinary daylight performance for south direction that prevents visual discomfort by keeping cases in the imperceptible range while providing an adequate average Spatial Daylight Autonomy of 60.5%,Useful Daylight illuminance of 90.47%,and Exceed Useful Daylight illuminance of 2.94%.展开更多
Based on human perception and machine learning methods,this study proposes a measurable method for evaluating visual comfort in underground spaces.First,a comfort evaluation index based on the characteristics of human...Based on human perception and machine learning methods,this study proposes a measurable method for evaluating visual comfort in underground spaces.First,a comfort evaluation index based on the characteristics of human visual perception is proposed,and color features and segmentation extraction methods for intelligent methods are given.Then,using probability statistics and machine learning methods,a multi-class intelligent sorting and classification algorithm for ranking visual comfort levels is constructed and a comparison is made of the suitability of different intelligent methods for evaluating visual comfort.The random forest algorithm is then selected as the most effective measurable intelligent evaluation algorithm for underground spaces.Finally,the proposed method is compared to intelligent methods employed by previous research,and a case study,the Wujiaochang underground space in Shanghai,China,is applied as the background.Results show that the proposed method can effectively improve the quantification and refinement of human perception and evaluation of comfort in underground spaces;this method will also be useful in computer-aided generative design in the future.展开更多
为分析热防护材料领域研究现状和未来发展趋势,文章采用信息可视化、网络分析的研究方法,以Web of Science(WOS)数据库及中国知网(CNKI)数据库中近30年(1993年1月—2023年6月)热防护材料相关的文献作为数据来源绘制可视化信息图谱,对发...为分析热防护材料领域研究现状和未来发展趋势,文章采用信息可视化、网络分析的研究方法,以Web of Science(WOS)数据库及中国知网(CNKI)数据库中近30年(1993年1月—2023年6月)热防护材料相关的文献作为数据来源绘制可视化信息图谱,对发文量、发文国家地区和机构、研究方向、核心作者、关键词等元素逐一进行分析,剖析热防护材料研究领域的发展动态、研究热点及前沿趋势。结果显示,美国、中国为主要研究国家,在该领域居重要地位;LI J(Li Jun)、SONG G W(Song Guowen)、SU Y(Su Yun)、LU Y H(Lu Yehu)、王云仪、朱方龙等作者为该领域的核心作者,在热应激、热防护服的研究中具有重要影响力;热防护服的热防护性与传热机制、人体的热生理与热舒适为活跃的研究主题与研究热点;相变材料、气凝胶、形状记忆织物、蜂窝夹芯织物、三维间隔织物为当前的研究热点材料,新型热防护材料的研发、服装内部结构的优化是未来研究中有效应对热应激的解决方法,是兼顾热防护服的热防护与热舒适平衡的重要途径。展开更多
目的了解国内外办公椅舒适性研究现状,明确国内办公椅舒适性研究的不足与空白部分,以明确未来的重点研究方向,预测国内外研究趋势。方法以中国知网中的中文数据和Web of science核心合集中的英文数据作为数据来源,利用Cite Space和VOSvi...目的了解国内外办公椅舒适性研究现状,明确国内办公椅舒适性研究的不足与空白部分,以明确未来的重点研究方向,预测国内外研究趋势。方法以中国知网中的中文数据和Web of science核心合集中的英文数据作为数据来源,利用Cite Space和VOSviewer软件对国内外文献数据中的关键词进行可视化分析,基于分析结果从研究热点和研究历程两个方面梳理国内外研究现状,并横纵向对比国内外研究状况以找到国内研究的不足之处。结论办公椅舒适性研究是办公椅研究领域的热点;国内办公椅舒适性研究起步晚于国外约20年,且每个研究阶段落后国外约10年。国外该领域研究时间长,研究范围广,国内在热舒适性、能量节约、身体不适等研究方面有所欠缺,未来应重点研究;未来办公椅舒适性研究极可能向结合人工智能的方向发展,基于神经网络、机器学习、深度学习的研究是未来发展的热点。展开更多
基金Supported by the National Science and Technology Planning Project(No.2012BAH38F00)the Engineering Research Project of Communication University of China(No.3132016XN1622)
文摘With the development of stereoscopic technology, more attention is attracted on the stereoscopic three-dimensional(S3 D) content and service, and researches on images and videos have emerged in large numbers. This paper focuses mainly on visual comfort affected by characteristics of disparity for multiple objects. To find the relationship between disparity distribution and visual comfort perception, several subject evaluation experiments are done. The study contains two spatial distribution types of disparity: 1) only one of the foreground objects has zero disparity; 2) one of the foreground objects has positive disparity, while the other one has negative disparity. The experimental results and relative regression analysis provide appropriate relationship between disparity distribution and visual comfort for both conditions, which is significant to meet the applicant field in S3 D content acquisition, display adjustment and quality evaluation.
文摘PeopLe＇s visual perception and recognition of urban coLorscape tones change significantly in hazy weather. A psychoLogicaL experiment is conducted in this study to investigate visual comfort related to commercial and residential buildings. Visual observations are performed on the tones of an urban coLorscape during hazy weather and air poLLution in Harbin, China. Fifty-eight color samples selected through an orthogonaL method are evaluated through a Ukert scale by 30 subjects in a Laboratory setting. Statistical analysis is performed with the maximal information coefficient and R Language. Experimental results show that the changing threshold values of color tones are related to the visual comfort LeveLs of the subjects. The influence of the three factors of color tones on visual comfort Level is reLativeLy independent, and the effects of value and chroma contrast on color comfort Level are greater than that of hue contrast in hazy weather. Furthermore, the comfort recognition threshold values of color tones in hazy weather are determined through data comparisons and analyses.
文摘The architectural form of the façade determines its identity as well as interactions with micro-climate forces of the ambient environment,such as solar radiation.The dynamic nature of daylight and occupants’positions can cause some issues such as heat gains and visual discomfort,which need to be controlled in real-time operation.Improving daylight performance and preventing visual discomfort for multiple occupants simultaneously is challenging.However,integrating the biomimicry principles of morphological adaptation with dynamic,complex fenestration,and human-in-loop systems can lead us to find an optimal solution.This research builds on relevant literature study,biomimicry morphological approaches,and parametric simulations,to develop a bio-inspired interactive kinetic façade for improving multiple occupants’visual comfort simultaneously,inspired by plant’s stomata movement and behavior principles.Learning from the transitory stage and hunting new position of stomata’s patchy patterns,leads us to identify the dynamic transitory-sensitive area of attraction point on the façade that is triggered by the dynamic sun-timing position and multiple occupants.The annual climate-based metrics and luminance-based metric simulation results of 810 bioinspired interactive kinetic façade alternatives prove that the elastic-deformable-complexkinetic form triggered by the dynamic transitory-sensitive area can improve the visual comfort of multiple occupants simultaneously.In particular,the bio-inspired interactive kinetic façade with grid division 8x1 displays extraordinary daylight performance for south direction that prevents visual discomfort by keeping cases in the imperceptible range while providing an adequate average Spatial Daylight Autonomy of 60.5%,Useful Daylight illuminance of 90.47%,and Exceed Useful Daylight illuminance of 2.94%.
基金supported by the National Key Special Project(2018YFC0808702)National Natural Science Foundation of China(52038008)Shanghai Science and Technology Commission Innovation Action Plan(20dz1202406).
文摘Based on human perception and machine learning methods,this study proposes a measurable method for evaluating visual comfort in underground spaces.First,a comfort evaluation index based on the characteristics of human visual perception is proposed,and color features and segmentation extraction methods for intelligent methods are given.Then,using probability statistics and machine learning methods,a multi-class intelligent sorting and classification algorithm for ranking visual comfort levels is constructed and a comparison is made of the suitability of different intelligent methods for evaluating visual comfort.The random forest algorithm is then selected as the most effective measurable intelligent evaluation algorithm for underground spaces.Finally,the proposed method is compared to intelligent methods employed by previous research,and a case study,the Wujiaochang underground space in Shanghai,China,is applied as the background.Results show that the proposed method can effectively improve the quantification and refinement of human perception and evaluation of comfort in underground spaces;this method will also be useful in computer-aided generative design in the future.
文摘为分析热防护材料领域研究现状和未来发展趋势,文章采用信息可视化、网络分析的研究方法,以Web of Science(WOS)数据库及中国知网(CNKI)数据库中近30年(1993年1月—2023年6月)热防护材料相关的文献作为数据来源绘制可视化信息图谱,对发文量、发文国家地区和机构、研究方向、核心作者、关键词等元素逐一进行分析,剖析热防护材料研究领域的发展动态、研究热点及前沿趋势。结果显示,美国、中国为主要研究国家,在该领域居重要地位;LI J(Li Jun)、SONG G W(Song Guowen)、SU Y(Su Yun)、LU Y H(Lu Yehu)、王云仪、朱方龙等作者为该领域的核心作者,在热应激、热防护服的研究中具有重要影响力;热防护服的热防护性与传热机制、人体的热生理与热舒适为活跃的研究主题与研究热点;相变材料、气凝胶、形状记忆织物、蜂窝夹芯织物、三维间隔织物为当前的研究热点材料,新型热防护材料的研发、服装内部结构的优化是未来研究中有效应对热应激的解决方法,是兼顾热防护服的热防护与热舒适平衡的重要途径。
文摘目的了解国内外办公椅舒适性研究现状,明确国内办公椅舒适性研究的不足与空白部分,以明确未来的重点研究方向,预测国内外研究趋势。方法以中国知网中的中文数据和Web of science核心合集中的英文数据作为数据来源,利用Cite Space和VOSviewer软件对国内外文献数据中的关键词进行可视化分析,基于分析结果从研究热点和研究历程两个方面梳理国内外研究现状,并横纵向对比国内外研究状况以找到国内研究的不足之处。结论办公椅舒适性研究是办公椅研究领域的热点;国内办公椅舒适性研究起步晚于国外约20年,且每个研究阶段落后国外约10年。国外该领域研究时间长,研究范围广,国内在热舒适性、能量节约、身体不适等研究方面有所欠缺,未来应重点研究;未来办公椅舒适性研究极可能向结合人工智能的方向发展,基于神经网络、机器学习、深度学习的研究是未来发展的热点。
