Persistent Link:
http://hdl.handle.net/10150/190396
Title:
Visual Comfort in Transitional Spaces
Author:
Araji, Mohamad Tarek
Issue Date:
2004
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
The study emphasizes changing light conditions in architectural spaces as a major factor on human eye adaptation, which represents a potential case for a visual shock. This visual shock is experienced when occupants encounter a sudden field of light whose intensity is above or below the limit of human eye adaptable range. To examine this condition, a new methodology is developed and outlined. It identifies the visual shock within transitional spaces and allows architects to investigate strategies that influence visual comfort. The physiological field of vision analysis is used to first critique, then to adjust, and finally to interpret scenes within transitional spaces. The methodology begins by using a 180° angle fish-eye lens camera to capture 3-D photographs along a selected pedestrian pathway. The photographs are overlaid by a “field of view” diagram to deduct areas obstructed by human facial features (eyebrows, cheeks, and nose). Area weighted percentages of the net view profile is then calculated using an overlay hemispherical radial grid. These percentages represent the cut-off vision (0%), the one-eye vision (12.5%), the peripheral vision (25%), and the central vision (50%). Image metamorphosis is done by the aid of the Adobe Photoshop software to restrict the image to four monochromatic contrasts of shade. Parallel to photographs, actual light intensity readings are collected and calibrated to each assigned contrast on the images. To illustrate the methodology, a case of a person experiencing an extreme discomfort by walking in the direction of a blinding sunlight source has been chosen and investigated. 3-D Computer modeling is then adopted to investigate the different architectural daylight solutions as suggested by the modified design and predicts a visual comfort. This method provides a successful tool for investigating light in transitional spaces as well as contributes to enhancing pedestrian awareness of their surrounding environment and clarity of visual information.
Type:
text; Electronic Thesis
Degree Name:
MS
Degree Level:
masters
Degree Program:
Graduate College; Architecture
Degree Grantor:
University of Arizona

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleVisual Comfort in Transitional Spacesen_US
dc.creatorAraji, Mohamad Tareken_US
dc.contributor.authorAraji, Mohamad Tareken_US
dc.date.issued2004-
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractThe study emphasizes changing light conditions in architectural spaces as a major factor on human eye adaptation, which represents a potential case for a visual shock. This visual shock is experienced when occupants encounter a sudden field of light whose intensity is above or below the limit of human eye adaptable range. To examine this condition, a new methodology is developed and outlined. It identifies the visual shock within transitional spaces and allows architects to investigate strategies that influence visual comfort. The physiological field of vision analysis is used to first critique, then to adjust, and finally to interpret scenes within transitional spaces. The methodology begins by using a 180° angle fish-eye lens camera to capture 3-D photographs along a selected pedestrian pathway. The photographs are overlaid by a “field of view” diagram to deduct areas obstructed by human facial features (eyebrows, cheeks, and nose). Area weighted percentages of the net view profile is then calculated using an overlay hemispherical radial grid. These percentages represent the cut-off vision (0%), the one-eye vision (12.5%), the peripheral vision (25%), and the central vision (50%). Image metamorphosis is done by the aid of the Adobe Photoshop software to restrict the image to four monochromatic contrasts of shade. Parallel to photographs, actual light intensity readings are collected and calibrated to each assigned contrast on the images. To illustrate the methodology, a case of a person experiencing an extreme discomfort by walking in the direction of a blinding sunlight source has been chosen and investigated. 3-D Computer modeling is then adopted to investigate the different architectural daylight solutions as suggested by the modified design and predicts a visual comfort. This method provides a successful tool for investigating light in transitional spaces as well as contributes to enhancing pedestrian awareness of their surrounding environment and clarity of visual information.en_US
dc.typetexten_US
dc.typeElectronic Thesisen_US
thesis.degree.nameMSen_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineArchitectureen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.committeememberChalfoun, Naderen_US
dc.contributor.committeememberJeffery, R. Brooksen_US
dc.contributor.committeememberJabbour, Ghassanen_US
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