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Parallax scanning depth enhancing imaging methods rely on discrete parallax differences between depth planes in a scene. The differences are caused by a parallax scan. When properly balanced (tuned) and displayed, the discrete parallax differences are perceived by the brain as depth. A continuously moving parallax scan records a pattern of sequential parallax views on a single strip of film or video tape. The lens's optical axis sweeps in the plane of the nominal X and Y axes around the nominal optical Z axis, pivoting on the optical convergence point (out along the Z axis), so that it passes through positions having parallax in relation to the optical convergence point. The circular scanning of the lens's optical axis traces out a coaxial cone pattern with the convergence point as its apex. Early tests revealed that the brain will translate parallax scanned information into depth information at scanning frequencies of between 3–6 Hz, and that the ideal frequency is 4.31 Hz. == Human Visual Perception == In his 1995 book, Foundations of Vision, Brian Wandell states, "Perception is an interpretation of the retinal image, not a description. Information in the retinal image may be interpreted in many different ways. Because we begin with ambiguous information, we cannot make deductions from the retinal image, only inferences. ....we have learned that the visual system succeeds in interpreting images because of statistical regularities present in the visual environment and hence in the retinal image. These regularities permit the visual system to use fragmentary information present in the retinal image to draw accurate inferences about the physical cause of the image. For example, when we make inferences from the retinal image, the knowledge that we live in a three-dimensional world is essential to the correct interpretation of the image. Often, we are made aware of the existence of these powerful interpretations and their assumptions when they are in error, that is, when we discover a visual illusion." While it is not possible to create a stereo image on a standard display without special equipment, it is possible to create an image with enhanced texture and depth. The parallax scanning lens technology creates autostereoscopic moving images with enhanced texture and depth on standard displays (television, movie screens and computer monitors) without the necessity of special screens or the use of viewing glasses. Images can be recorded on normal film or videotape using industry standard camera systems. The image depth enhancement is accomplished entirely by the lens using parallax scanning technology. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Parallax scanning」の詳細全文を読む スポンサード リンク
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