Accession Number : AD0717336

Title :   Shape from Shading: A Method for Obtaining the Shape of a Smooth Opaque Object from One View.

Descriptive Note : Doctoral thesis,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE PROJECT MAC

Personal Author(s) : Horn,Berthold K. P.

Report Date : NOV 1970

Pagination or Media Count : 198

Abstract : A method is described for finding the shape of a smooth opaque object from a monocular image, given a knowledge of the surface photometry, the position of the lightsource and certain auxiliary information to resolve ambiguities. This method is complementary to the use of stereoscopy which relies on matching up sharp detail and will fail on smooth objects. Until now the image processing of single views has been restricted to objects which can meaningfully be considered two-dimensional or bounded by plane surfaces. ... A number of applications of this method will be discussed including one to lunar topography and one to the scanning electron microscope. In both of these cases great simplifications occur in the equations. A note on polyhedra follows and a quantitative theory of facial make-up is touched upon. An implementation of some of these ideas on the PDP-6 computer with its attached image-dissector camera at the Artificial Intelligence Laboratory will be described, and also a nose-recognition program. (Author)

Descriptors :   (*PHOTOGRAMMETRY, PHOTOINTERPRETABILITY), (*PATTERN RECOGNITION, OPTICAL IMAGES), MAPPING, REFLECTIVITY, DIFFERENTIAL EQUATIONS, SPACE PERCEPTION, ELECTRON MICROSCOPY, ARTIFICIAL INTELLIGENCE, THESES

Subject Categories : Cartography and Aerial Photography
      Bionics

Distribution Statement : APPROVED FOR PUBLIC RELEASE