A Clustering Heuristic for Line-Drawing Analysis
Azriel Rosenfeld, Yung H. Lee · IEEE Transactions on Computers · 1972
Certain arrangements of local features in a scene tend to group together and to be seen as units. It is suggested that, in some instances, this phenomenon might be interpretable as a process of cluster detection in a graph-structured space derived from the scene. This idea is illustrated using a class of line-drawing ``scenes'' that contain only horizontal and vertical line segments.