Shape constancy in pictorial relief

Jan J. Koenderink, Andrea J. van Doorn, Chris Christou, Joseph S. Lappin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

We measured pictorial relief for a series of pictures of a smooth solid object. The scene was geometrically identical (i.e., the perspective of the same 3D scene) for all pictures, the rendering different. Some of the pictures were monochrome full scale photographs taken under different illuminations of the scene. We also included a silhouette (uniform black on uniform white) and a “cartoon” style rendering (visual contour and key linear features rendered in thin black line on a uniform white ground). Two subjects were naive and started with the silhouette, next did the cartoon, finally the full scale photographs. Another subject had seen the object and did the experiment in the opposite sequence. The silhouette rendering is impoverished,but has considerable relief with much of the basic shape. The cartoon rendering yields well developed pictorial relief, even in the naive subjects. Shading adds only small local details, but different illuminations produce significant alterations of relief. We conclude that shape constancy under changes in illumination rules throughout, but that the (small) deviations from true constancy reveal the effect of cues such as shading in a natural setting. Such a “perturbation analysis” appears more promising than either stimulus reduction or cue conflict paradigms.

Original languageEnglish
Title of host publicationObject Representation in Computer Vision II - ECCV 1996 International Workshop, Proceedings
PublisherSpringer Verlag
Pages149-164
Number of pages16
Volume1144
ISBN (Print)3540617507, 3540617507, 3540617507, 9783540617501, 9783540617501, 9783540617501
Publication statusPublished - 1996
EventInternational Workshop on Object Representation in Computer Vision II, ECCV 1996 - Cambridge, United Kingdom
Duration: 13 Apr 199614 Apr 1996

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume1144
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

OtherInternational Workshop on Object Representation in Computer Vision II, ECCV 1996
CountryUnited Kingdom
CityCambridge
Period13/04/9614/04/96

Fingerprint Dive into the research topics of 'Shape constancy in pictorial relief'. Together they form a unique fingerprint.

  • Cite this

    Koenderink, J. J., van Doorn, A. J., Christou, C., & Lappin, J. S. (1996). Shape constancy in pictorial relief. In Object Representation in Computer Vision II - ECCV 1996 International Workshop, Proceedings (Vol. 1144, pp. 149-164). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 1144). Springer Verlag.