为满足黑白摄像系统拥有识别彩色信息能力,特别是针对监控,勘察等实际应用领域的要求,在此提出一种新的伪彩色处理方法。该方法在镜头前简单地添加不同频带滤光片(红、绿、蓝),在RGB空间域内互补还原色调信息,实现摄像系统的非彩色转彩色能力。实验结果表明在通常的应用环境下(1~5m的拍摄距离,100~500lx的光强范围,±60°视场角之间),图像彩色化处理结果与实际颜色基本一致。该系统主要特点是图像附加信息量小,具有较高的可靠性、重复性和环境适应性,并且结构简单,成本低。

To acquire color information from black-and-white images in the actual applications, especially the area of monitoring and surveying, a method of pseudo color coding was proposed. This method worked by simply adding filters with different frequency bands in front of the camera, and restoring the color information in space domain of RGB according to the intensity information provided by the black and white camera. The results showed that the color information could be restored successfully in normal environment, where the focusing distance was 1~5 meters, the light intensity of light was 100~500lx and the angle of view was ±60°. This system is characterized by its low quantity of additional information, high reliability, repeatability and adaption to different environments, simplicity of its structure, and the low cost.