Abstract: A software package, running in the instrument of photographic image microstructure analysis,was compiled.It can be used to test the quality of photographic materials and value the photographic images.This software package makes the instrument powerful enough to obtain several kinds of information of photographic images.During the measurement it can sample data and calculate,showing the character of simple and high speed.The design principal and the structure of the software were introduced,and the function of the software,measurement method and the results were also discussed in detail in the paper.

Key words: RMS granularity, Wiener spectrum, modulation transfer function, software package, instrument of photographic image microstructure analysis