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Zusatztext ...a brilliant synopsis of what is currently known about our perception of light. It does a wonderful job of incorporating basic science with clinical and theoretical applications. The way the principles are laid out will pique the interest of anyone interested in how we see and perceive light. The exposition is clear and the book will be beneficial to readers who are new to the area and a valuable resource for experts. Klappentext How the human visual system determines the lightness of a surface, that is, its whiteness, blackness, or grayness, remains--like vision in general--a mystery. In fact, we have not even been able to create a machine that can determine, through an artificial vision system, whether an object iswhite, black, or gray. Although the photoreceptors in the eye are driven by light, the light reflected by a surface does not reveal its shade of gray. Depending upon the level of illumination, a surface of any shade of gray can reflect any amount of light. In Seeing Black and White Alan Gilchrist ties together over 30 years of his own research on lightness, and presents the first comprehensive, historical review of empirical work on lightness, covering the past 150 years of research on images ranging from the simple to the complex. He also describesand analyzes the many theories of lightness--including his own--showing what each can and cannot explain. Gilchrist highlights the forgotten-yet-exciting work done in the first third of the twentieth century, describing several crucial experiments and examining the brilliant but nearly unknown workof the Hungarian gestalt theorist, Lajos Kardos. Gilchrists review also includes a survey of the pattern of lightness errors made by humans, many of which result in delightful illusions. He argues that because these errors are not random, but systematic, they are the signature of our visual software, and so provide a powerful tool that can revealhow lightness is computed. Based on this argument and the concepts of anchoring, grouping, and frames of reference, Gilchrist presents a new theoretical framework that explains an unprecedentedarray of lightness errors. As both the first comprehensive overview of research on lightness and the firstunified presentation of Gilchrists new theoretical framework Seeing Black and White will be an invaluable resource for vision scientists, cognitive psychologists, and Zusammenfassung Reviews the history of the scientific development of lightness theory and outlines and critiques the theories of lightness, laying out the strengths and weaknesses of each. This work presents author's argument that previous models of lightness perception fail to capture the errors and illusions present in human perception. Inhaltsverzeichnis 1: Introduction 2: The Classic Period 3: The Katz Period 4: The Gestalt Period 5: The Contrast Period 6: The Computational Period 7: Computational Models 8: Illumination Perception 9: The Anchoring Problem 10: Errors in Lightness 11: An Anchoring Model of Errors 12: Theories of Lightness 13: Concluding Thoughts Glossary Bibliography ...
