用Fortran语言编程，实现了光谱底片在计算机屏幕上的伪彩色及仿真光谱底片的多级灰度再现，实现了屏幕光标定位、数据的随时读取、图像旋转等功能。并可进一步作出光谱图像的等密度轮廓曲线和三维立体图形，大大提高了光谱底片数据处理的效率和精度。

Using a code programmed based on the Fortran, spectrum images can be reproduced on the computer screen with artificial colored and multi level grey methods. Processing functions of screen cursor location, instant read out of spectrum data and image rotation were realized. In addition, the contour and 3D graph deduced from the image can also be produced. This code can greatly improve the efficiency and precision in film image data processing.