Image Contouring and Comparing. AIM-199

A contour image representation is stated and an algorithm for
converting a set of digital television images into this
representation is explained. The algorithm consists of five steps:
digital image thresholding, binary image contouring, polygon
nesting, polygon smoothing, and polygon comparing. An implementation
of the algorithm is the main routine of a program called CRE;
auxiliary routines provide cart and turn table control, TV camera
input, image display, and xerox printer output. A serendip
application of CRE to type font construction is explained. Details
about the intended application of CRE to the perception of physical
objects will appear in sequels to this paper.