The generation of polygonal outlines of objects from gray level pictures
H. Feng, Theodoros E Pavlidis · IEEE Transactions on Circuits and Systems · 1975
The main part of this paper describes how to create efficiently a data structure which allows the use of approximation techniques to obtain consistent polygonal outlines of the objects in a picture. In addition, it gives a method for editing the regions obtained from the application of a segmentation algorithm. Examples involving solid geometrical objects, X-ray pictures, and human faces are given.