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人们之所以对自然景物有立体的视觉效果,这主要是人的“双眼效应”的作用。原来,当我们观看景物时,由于左右两眼存在一定的视差,使同一景物在左右视网膜上形成的像,其形态略有差异,这样经大脑视觉中心处理后,便使所视景物具有立体感了,立体幻灯就是依据人的这一“双眼效应”制成的。我们用一架普通的135型照相机,通过二次拍摄同一景物来模拟人的左右两眼对景物的观察(如图1所示),其中偏左方位的拍摄表示人的左眼对景物的观察,偏右方位的拍摄表示人的右眼对景物的观察。为了重现已摄景物的立体感,运用光的偏振特性来区分因“视差”引起的两幅形态略有差异的图象,使它满足“双眼效应”的要求,从而达到使所视图象具有身临其境般的立体感。
The reason why people have three-dimensional visual effects on the natural scenery, which is mainly the role of human “binocular effect ”. It turned out that when we view the scene, due to the existence of a certain degree of parallax between the left and right eyes so that the same scene in the left and right retinas formed like the shape slightly different, so that after processing by the visual center of the brain, so that the view has a three-dimensional The three-dimensional slide is based on the people of this “binocular effect ” made. We use an ordinary type 135 camera to simulate the observation of the subject by the two shots of the same subject (as shown in Figure 1) by taking the same subject twice, wherein the photographing by the left-pointing position indicates the observation of the subject by the left eye , The right side of the shooting position that the human right eye observation of the scene. In order to reproduce the three-dimensional sense of the scene already taken, the polarization characteristics of the light are used to distinguish images slightly different between the two forms caused by “parallax” so as to satisfy the requirement of “binocular effect” The image is an immersive three-dimensional view.