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Titolo:
Minimal information to determine affine shape equivalence
Autore:
Wagemans, J; Van Gool, L; Lamote, C; Foster, DH;
Indirizzi:
Catholic Univ Louvain, Expt Psychol Lab, B-3000 Louvain, Belgium Catholic Univ Louvain Louvain Belgium B-3000 ab, B-3000 Louvain, Belgium Katholieke Univ Leuven, Dept Elect Engn, ESAT, Louvain, Belgium KatholiekeUniv Leuven Louvain Belgium ect Engn, ESAT, Louvain, Belgium Univ Manchester, Inst Sci & Technol, Dept Optometry & Neurosci, ManchesterM13 9PL, Lancs, England Univ Manchester Manchester Lancs England M13 9PL rM13 9PL, Lancs, England
Titolo Testata:
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE
fascicolo: 2, volume: 26, anno: 2000,
pagine: 443 - 468
SICI:
0096-1523(200004)26:2<443:MITDAS>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
STRUCTURE-FROM-MOTION; OBJECT RECOGNITION; 3-DIMENSIONAL STRUCTURE; VISUAL-DISCRIMINATION; PROJECTIVE INVARIANCE; VIEWPOINT INVARIANCE; DEPENDENT RECOGNITION; ROTATIONAL MOTION; ROTATED OBJECTS; NONRIGID MOTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Citazioni:
126
Recensione:
Indirizzi per estratti:
Indirizzo: Wagemans, J Catholic Univ Louvain, Expt Psychol Lab, Tiensestr 102, B-3000Louvain, Belgium Catholic Univ Louvain Tiensestr 102 Louvain Belgium B-3000 um
Citazione:
J. Wagemans et al., "Minimal information to determine affine shape equivalence", J EXP PSY P, 26(2), 2000, pp. 443-468

Abstract

Participants judged the affine equivalence of 2 simultaneously presented 4-point patterns. Performance level (d') varied between 1.5 and 2.7, depending on the information available for solving the correspondence problem (insufficient in Experiment la, superfluous in Experiment 1b, and minimal in Experiments 1c, 2a, 2b) and on the exposure time (unlimited in Experiments 1 and 2a and 500 ms in Experiment 2b), but it did not vary much with the complexity of the affine transformation (rotation and slant in Experiment 1 andsame plus tilt in Experiment 2). Performance in Experiment 3 was lower with 3-point patterns than with 4-point patterns, whereas blocking the trials according to the affine transformation parameters had little effect. Determining affine shape equivalence with minimal-information displays is based on a fast assessment of qualitatively or quasi-invariant properties such as convexity/concavity, parallelism, and collinearity.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 14:24:42