平视显示器是一种大视场大出瞳的光学系统, 常用的测视差的方法是摆头法, 但测量精度较低, 并且有人眼读数误差。为了提高平视显示器视差的调校精度及效率, 消除人眼读数误差, 介绍了一种基于CCD 视频图像处理的视差自动测量系统。用CCD 像机对平视显示器图像画面进行采集, 在出瞳的范围内进行平移, 比较在出瞳边缘采集的图像, 计算两幅图像的偏移量, 自动得出平视显示器的视差。详细论述了该方法的测量原理, 并对该视差测量仪的光机结构进行了详细说明, 对各技术参数的选择进行了分析, 对测量精度进行了分析, 最后对几种视差测试精度进行了对比分析。

Head-up Display (HUD) is a large aperture optical system with a large view field. Head-moving is the usual measurement, but has a low accuracy, and relying on the subjective judgment of the inspector. In order to improve the testing accuracy and efficiency of head-up display’s optical parallax, and avoid the subjective judgment of the inspector, an optical parallax auto-testing system was introduced. The image of head-up display was collected by the CCD camera, and then the camera moved in the out aperture. The difference was calculated by comparing the image collected at the edge of the out aperture, and then the head-up display’s optical parallax was obtained. The testing principle was introduced in detail, and the structure of the optical parallax testing instrument was introduced in detail. Then the parameters and testing accuracy were also analyzed. At last, the testing accuracy of optical parallax was analyzed in several.