Browsing by Author "Fukahori, K"

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    The effect of visual stimuli of planned residential streetscapes on way finding behavior of first time visitors
    (2014-04-10) Gunawardena, GMWL; Yoichi, K; Fukahori, K
    This paper is concerned the streetscape visual stimuli making streetscape confusions as we" as the visual stimuli making trouble-free bzdirectional movements of first time visitors to an area. Pedestrian/ vehicle streets around Saitama Universiry, Japan iuere selectedfor the stucfy. One fonvard movement movie along a streetscape with 5 movies of baceiuard movements from different streetscapes were displqyed to a group of suo/ects. S uijccts u/ere asked to select the correct bacesiard movement analogous to the fonvard movement and a questionnaire was given to fill Ivith the answers for individual's selection. This method tuas repeated ry changing the fonuard and backward movies along streetscapes and the group of suo/ects. A significant variation could be identified in the backward path selection corresponding to thefonvard movement. Visual stimuli which caused streetscape confusions and the visual stimuli that helpful jor correctpath selection sere identified. The visual stimuli that made streetscape confusions and that made correct selection were significantlY similar among different planned streetscape groups.
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    item: Article-Full-text
    The Effect of Visual Stimuli of Planned Residential Streetscapes on Way Finding Behavior of First Time Visitors
    (2013-12) Gunanwardena, WL; Yoichi, K; Fukahori, K
    This paper is concerned the streetscape visual stimuli making streetscape confusions as well as the visual stimuli making trouble-free bidirectional movements of first time visitors to an area. Pedestrian/ vehicle streets around Saitama University, Japan were selected for the study. One forward movement movie along a streetscape with 5 moms of backward movements from different streetscapes were displayed to a group of subjects. Subjects were asked to select the correct backward movement analogous to the forward movement and a questionnaire was given to fill with the answers for individual’s selection. This method was repeated by changing the forward and backward movies along streetscapes and the group of subjects. A significant variation could be identified in the backward path selection corresponding to the forward movement. Visual stimuli which caused streetscape confusions and the visual stimuli that helpful for correct path selection were identified. The visual stimuli that made streetscape confusions and that made correct selection were significantly similar among different planned streetscape groups.
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    item: Conference-Abstract
    Fractal dimensions for streetscape visual complexity analysis
    Gunawardena, GMWL; Yoichi, K; Fukahori, K
    Streetscape visual complexity can be measured in various ways including subjective and objective methods. In this paper an attempt was undertaken to compare the subjective judgments of streetscape visual complexity with the fractal dimension calculations of the streetscapes. The commercial streetscapes around Kita Urawa Station at Saitama Prefecture, Japan were selected for the study. The perspective views of the streetscapes were displayed to a group of subjects and their judgments on the streetscape visual complexity was measured using a Likert scale. Grayscale perspective images of the same streetscapes were used for the fractal dimension calculations. Both subjective and objective experiment results demonstrated a good correlation depicting the use of fractal dimensions for streetscape visual complexity analysis is a prolific task.
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    item: Article-Abstract
    A Study on visual diversity of Japanese residential streetscapes
    Gunawardena, GMWL; Yoichi, K; Fukahori, K
    This study was conducted to find out the available visual diversity in Japanese residential streetscapes. The visual diversity occurs when the visual elements on streetscapes are different to each other. In this study, a field survey as a subjective method and the entropy as an objective method were used as measures of visual diversity. Data were collected from 80 residential streetscapes from four sites in the Saitama Prefecture, Japan. The sequential perspective views of streetscapes were analyzed for eight visual elements: shape of houses, shape of roofs, shape of windows, positions of the main openings of houses, availability of the ornaments on houses, height, color and the appearance of the boundary walls of premises to calculate the entropy. A field survey with multicultural subjects was used to find out the correlation between entropy and the human perception on the visual diversity. According to the results, the residential streetscapes displayed high diversity variations largely due to the shape of the roofs, shape of the windows and the appearance of the boundary walls of the premises. Moreover, the results concluded that the residential streetscapes at the study area are neither visually diverse nor visually uniform in considering the visual diversity aspect.
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    item: Article-Abstract
    The Use of entropy for visual diversity assessment on residential streetscapes
    Gunawardena, GMWL; Yoichi, K; Fukahori, K
    This study was conducted with the objective of finding out the applicability of entropy values for the assessment of visual diversity on residential streetscapes. The visual diversity on streetscapes occurs when the visual elements on streetscapes show a kind of difference to each other. Measuring of these differences among visual elements could be carried out using different methods. In this research, the entropy calculations were used of differences among visual elements to explain visual diversity numerically. For this data were collected from 30 residential streetscapes representing low to high housing densities. The sequential perspective views of streetscapes were analyzed for 6 visual attributes named, shape of houses, shape of roofs shape of windows,height color and the appearance of boundary walls of premises and for each attribute the entropy value was separate calculated. .ed According to the calculations, the residential street capes show high diversity variations. largely due to shape of the rooms and the appearance of boundary walls of premises. subsequently the sum of the each attribute the entropy values was considered as the total entropy for each streetscape. A field survey was the correlation building used to find out “Se 'SrovVL the, entropy could be success®, applted mease the visual diversity numerically on residential streetscapes. “Se 'SrovVL the, entropy could be success®, applted mease™ the visual diversity numerically on residential streetscapes.
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    item: Article-Abstract
    Visual complexity analysis using taxonomic diagrams of figures and backgrounds in Japanese residential streetscapes
    Gunawardena, GMWL; Kubota, Y; Fukahori, K
    This study was conducted with the objective of finding the perceivable effect of figures and backgrounds on residential streetscapes and their connections in visual complexity. The visual complexity depends on the extent of information a viewer can observe from a visible area.The information includes a number of visual elements along the streetscapes and their diversity and interconnections. The aim of this research was to analyze the structural hierarchical visual complexity of the streetscapes, caused by varied spatial arrangement and numerous spatial connections of the perceivable visual elements.Thevisual elements of 60 residential streetscapes were classified into figures and backgrounds using human perception of 20 subjects.The identified figures and backgrounds were arranged in a taxonomic diagram representing their connections. These taxonomic diagrams reflect the structural hierarchical visual complexity. Finally, taxonomic entropywas applied to statistically analyze the structural hierarchical visual complexity.When the taxonomic diagramis vertically and horizontally lengthy and the arrangement of the elements of taxonomic diagramis irregular, the complexity increases depicting a large number of figures whose spatial connections impart a high visual complexity to the streetscapes.
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    item: Conference-Full-text
    Walkability evaluation of streetscapes: development of prediction equations for walking needs of tourists
    (2013-11-12) Samarasekara, GN; Fukahori, K; Kubota, Y
    Work presented here is a part of a comprehensive study which aimed at calculating the walkability levels of streets. The walkability levels are to be calculated based on five walking needs which have been identified in previous stages. In the work presented here, equations which can predict five walking needs were developed based on independent variables which represent the effect of physical environment.