在衍射屏上再现全息像的白光彩色摄影
White Light Colour Photography for Rendering Holoimages in a Diffractive Screen
摘要：
作者（1990）以前曾演示过对来自场景的连续视图序列进行颜色编码的能力。在目前的工作中，这个过程的方案是显示在白色光从一个黑色和白色的对象是衍射在衍射光栅，然后拍摄在彩色胶片。到达彩色摄影胶片平面的两条不同波长的光线决定了物点的立体表现。由于波长可以是连续可见光谱内的任意值，这种情况构成了连续立体摄影的新局面。一个自然的解码过程是代表了一个扩散的白色光源，从一侧的发展摄影胶片。与入射光线的先前位置匹配的一条白色光线在穿过照相载玻片时接收配准点的光谱特性。它表征了光路反转的情况，理想的结果对应于投射的白光点聚焦在原始物体位置。这种情况会产生物体的幻视图像，从一定距离看，其颜色取决于观察者的水平位置。
英文摘要：
The capability of color encoding the continuous sequence of views from a scene was demonstrated previously by the author (1990). In the present work, the scheme for this process is shown where white light from a black and white object is diffracted at a diffraction grating and then photographed on colour film. Two rays of different wavelengths reaching the plane of the color photographic film determine the stereo representation of an object point. Since the wavelength may have any value within the continuous visible spectrum, this case constitutes a new situation of continuous stereo photography. A natural process of decoding is represented where a diffusing white light source was added from the side of the developed photographic film. One white light ray that matches the former position of an incident ray receives the spectral characteristics of the registered point when traversing the photographic slide. It characterizes a situation of light path reversal, and the ideal result corresponds to a projected white light point being focused at the original object position. This situation generates a pseudoscopic image of the object, as seen from a certain distance, whose colour depends on the horizontal position of the observer.
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