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Predecessor
26.29
Displaying 1-11 of 11 articles from this issue
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Article type: Cover
Pages Cover1-
Published: March 19, 2002
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (13K) -
Article type: Index
Pages Toc1-
Published: March 19, 2002
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (35K) -
Shin-ichi NAGAYAMA, Mamoru TAKAMATSU, Yoshio NAKASHIMA, Chikara MORITAArticle type: Article
Session ID: HIR2002-61
Published: March 19, 2002
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWith the trend of 24 hours lifestyles, the importance of the creation of beautiful urban nightscape has increased and the landscape lighting (light-up) plays higher cultural roles such as "Creation of the comfortable lighting emvironment" and "Representation of the urban nightscape". In this study, we applied the SD technique to Kanazawa which is the typical local city in Hokuriku district, and tried to quantitatively evaluate the lighting effect of urban nightscapes. In conclusion, the overall evaluation of the lighting of nightscape was better than that of the dayscape. And also, we found that the appropriate light-up was more important in improving the image of the urban nightscape and activating the urban life.View full abstractDownload PDF (1011K) -
Shifeng WANG, Naoyuki TAKEDA, Yoshio NAKASHIMA, Mamoru TAKAMATSU, Masa ...Article type: Article
Session ID: HIR2002-62
Published: March 19, 2002
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSAs lifestyles of people have changed radically to 24 hours activities, the lighting of urban nightscape has become more important for the improvement of townscapes. In this experiment, we examined how a color of landscape lighting affects townscape from phycophysical points of view. We chose 3 typical lighting colors, white, red and light blue. It became clear that red color left stronger impression than the other two as landscape lighting.View full abstractDownload PDF (395K) -
Santaro NAKAJIMA, Shinsuke TSURI, Mamoru TAKAMATSU, Yoshio NAKASHIMAArticle type: Article
Session ID: HIR2002-63
Published: March 19, 2002
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSTraffic information boards have a vital role in promoting safe and efficient road traffic, by providing the drivers with relevant traffic information on a real-time basis. To achieve good visibility, we must know the optimum number of display colors and chromaticity regions so that the drivers can correctly recognize displayed information in a short time. We attempted to determine an optimum number of display colors based on the categorical color technique, as well as to define the chromaticity regions for display colors so that a given color is most effectively discriminated from the others. The results with LED display showed that the optimum number of display colors is ten.View full abstractDownload PDF (629K) -
Mamoru TAKAMATSU, Yoshio NAKASHIMA, Santarou NAKAJIMA, Masahiro ISIIArticle type: Article
Session ID: HIR2002-64
Published: March 19, 2002
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSOur visual characteristics are affected by various visual environments. In this experiment, we examine how object colors look in dense fog and veiling effect. Namely, 5 subjects with normal color vision evaluated their color perception of object color both in the presence of fog and in the veiling effect at various illuminance levels. Subject's task is to match the apparent color of 10 standard-color-cards with the Munsell color. In the presence of fog, apparent color showed a drastically decrease both in the chroma and in the value. Namely, their color perception shift from chromatic color to achromatic color. This tendency becomes more conspicuous under veiling effect.View full abstractDownload PDF (503K) -
Kenta TAKESHIMA, Kei KAMIYA, Yoshio NAKASHIMA, Mamoru TAKAMATSUArticle type: Article
Session ID: HIR2002-65
Published: March 19, 2002
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIt is well known that color appearance depends on the visual environments. In this experiment, apparent color and hue-shift in the small visual angles were investigated quantitatively employing the color-naming method. Five observers with normal color vision and visual acuity participated in this experiment. Color perception shifted from chromatic color to achromatic color as the decrease of the visual angles. We are confident that in the visual environments involving small visual angles, these results are useful both for the basic study and for the practical applications.View full abstractDownload PDF (381K) -
M ISHII, Z TANG, H TAMURA, Y NAKAJIMA, M TAKAMATSUArticle type: Article
Session ID: HIR2002-66
Published: March 19, 2002
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThis paper is on depth constancy and stereoscopic vision. By using approaching object that consists of two small points in the dark surroundings, sensitivity of detecting the change of depth was measured. The results show that our visual system has some depth constancy.View full abstractDownload PDF (502K) -
Sadanori OKA, Yoshimichi EJIMAArticle type: Article
Session ID: HIR2002-67
Published: March 19, 2002
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe examined characteristics of EEC associated with global structures which are considered to activate the extrastriate cortex (V4). Three test stimuli (concentric, radial and parallel) were composed of random dots in which pairs of dots were placed so that the orientation of each dot pair was tangential to contours of global form for each stimulus. Control stimulus was composed of randomly oriented dot pairs, so that the comparison of the EEG to the control with that to the test stimuli enabled us to analyze the visual processing of global structure. Two stimulus presentation conditions (steady state and transient) were used. In the steady state condition, significant large response was obtained for the concentric pattern while no large response was obtained for the radial or parallel patterns. The response to the concentric pattern decreased to noise level within the initial 2 seconds. In the transient condition, the responses from 200 msec onwards after transition from the control stimulus differed in nature between the concentric and parallel patterns. A fMRl experiment was conducted in order to investigate the cortex activated by concentric shape.View full abstractDownload PDF (1253K) -
Article type: Appendix
Pages App1-
Published: March 19, 2002
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (77K) -
Article type: Appendix
Pages App2-
Published: March 19, 2002
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (77K)
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