Development of an Image Analysis Program for the IBM PC/XT/AT.

Development of an image analysis environment for an IBM PC suitable for experimentation and prototyping in areas of pattern recognition and human visual system understanding was explored. Requirements for the spatial Fourier transform and its inverse, correlation, histogram, and spatial and frequency filtering, with a variety of graphic displays are established. Functions can be performed on whole images or subimages as designated by the operator. An image analysis environment is formed by using the analysis functions and operations as primitive functions of a higher level language. Turbo Pascal was used as the development language because of its user friendly environment and fast compiler. Program size restrictions were eliminated by use of virtual arrays provided in the Turbo Extender package from TurboPower Software. Additional graphics capabilities were obtained with MetaWINDOR from MetaGraphics Software Corp. Only the frequency analysis, display picture, and print picture sections were completed. The completed portion of the program makes extensive use of graphics to create pop-up menus and windows that combine picture displays and graphs for maximum flexibility. As an operational system Turbo Pascal is not suitable. Virtual arrays which eliminate the 64KB memory restriction have very slow access. Completion of this program in another dialect of Pascal without the size restriction should result in a usable environment. Theses