By Arnold Gallardo

ISBN-10: 1584500387

ISBN-13: 9781584500384

Книга для 3D-визуализаторов из разряда «маст хэв» - прекрасно иллюстрированное справочное пособие по созданию освещения сцены: теория, общие принципы, конкретные примеры.

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Extra info for 3D Lighting: History, Concepts, and Techniques (With CD-ROM) (Graphics Series

Example text

Modern film minimizes the effects of irradiation and halation, but photography is still a complex process. However, this does not mean that the process is not possible to predict and the light and film interaction are not possible to control, as we shall see. B LACK - AND -W HITE F ILM All early forms of photography created basically monochromatic, or one-tone, pictures. These early emulsions responded only to extreme blue-green to ultraviolet wavelengths. NOTE Please see the CD-ROM for color versions of Figures.

Visual illusions are perceived objects that are absent in the stimuli. In general, they do not exist in the object being seen. SENSING MOVEMENT The visual field can be thought of as a signal-processing system that is driven by importance. It detects the stimuli first, then responds to it. The only drawback to this kind of system is that once the stimuli become static, the system’s ability to perceive deteriorates rapidly, since the photoreceptors become used to the same signal and refuse to respond.

Since the film is “blind” to reds and yellows, these colors are rendered identically as dark tones. 4). These dyes absorb the same spectra as themselves, meaning that a yellow dye absorbs yellow and a red dye absorbs red. 5), meaning that it responds to the colors of nature. Although orthochromatic film is an advance compared with early emulsions, it still does not respond to red very well. To do so, orthochromatic film needs to have full spectral sensitivity, from red to ultraviolet. 6) addresses the red and yellow shortcomings of orthochromatic film because it has additional organic dyes in its emulsion.

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3D Lighting: History, Concepts, and Techniques (With CD-ROM) (Graphics Series by Arnold Gallardo

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