摘要
应用激光光学理论探讨了激光扫描像素的能量分布规律,从而给出了组成文字和图像的像素的几何形状。在此基础上,利用光学调制传递函数对激光扫描的成像质量进行了定量的描述,并举例说明了该调制传递函数曲线在文字和图像处理中的应用。
In this paper the optical energy distribution of laser scanning elements is cxplorcd by the use of laser optical principles, then the geometric figure of elements composing characters and images is obstaincd. On the basis oF the quantitative description about the image quality of laser scanning is set up by using modulation transfer function. The application of this function in handling charactcrs and images is illustrated with examples.