利用全息元件处理大面积图象

Processing Large-size Images with HOEs

本文提出了一种专门制作的全息元件作照明器的图象处理系统,它可以利用白光照明实时处理大面积图象。这种系统可以进行两张图象差异的彩色显示、黑白图象的假彩色编码和彩色合成,以及对体视对图片的体视观察等。本文最后给出了实验结果。

This paper reports on a new image-processing system which is illuminated by special HOEs (Holography Optical Elements) with white light. It can process large-size transparent photographs (200×200mm^2) in many ways: real-time pseudocolor image-difference detection, pseudo-color image-processing and viewing of stereo-image constructed by a pair of stereotomys without special glasses. The experimental results have verified its practicability. The HOEs are made easily by rainbow holography theory and illuminated by common white light sources. The sizes of the HOEs can be enlarged by increasing the apertures of the lenes in our setup to process larger-size images. The system allows two persons to observe the image simultaneously. The different colors and brightness of the images are available.