Edge detection using Walsh functions

MACHINE PERCEPTION OF THREE-DIMENSIONAL SOLIDS,

1963 • 1,476 citations

A Closed Set of Normal Orthogonal Functions

1923 • 939 citations

Optical and electro-optical information processing

1966 • 710 citations

An Operator Which Locates Edges in Digitized Pictures

1971 • 413 citations

Automatic interpretation and classification of images

1969 • 231 citations

A context sensitive line finder for recognition of polyhedra

1973 • 70 citations

Finding picture edges through collinearity of feature points

1973 • 59 citations

The Binford-Horn LINE-FINDER

1973 • 52 citations