Depth perception.
نویسندگان
چکیده
Glossary Cue The signal or information in a two-dimensional image that can be used to infer or reconstruct the spatial relations in a three-dimensional scene. Depth Refers to the distance between a viewer and an object as well to the distance between two objects that extend away from a viewer. This is the missing dimension when depicting a three-dimensional scene in a two-dimensional image, whether the image be a picture or the pattern of light projected onto the retina at the back of the eye. Fovea An area of the retina in the center of each eye in humans (as well as in the eyes of many other sighted animals) containing the most densely packed array of light-sensitive neurons. High-resolution vision is only possible when light from an object falls onto the fovea. Heuristic A method for solving a problem that begins by first making certain assumptions (e.g., a gradation of shading in an image that runs vertically from light to dark corresponds to a surface with convex curvature, but only on the assumption that light is shining from above the surface and the viewer). Image A two-dimensional projection of a threedimensional scene from a specific viewpoint. Retina(e) The array of light-sensitive neurons at the back of the eye. Light rays passing through the cornea and lens of the eye are focused on the retina and these retinal neurons convert the light into electrochemical signals. Retinal image The array of light projected onto the retina through the cornea and lens of the eye.
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بررسی تأثیر مشارکت ورزشی بر ادراک عمق سالمندان
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عنوان ژورنال:
- Perception
دوره 27 11 شماره
صفحات -
تاریخ انتشار 1998