RT Journal Article
T1 Perception of high-contrast blurred edges
A1 Sanz, Iván
A1 Chevalier Del Río, Margarita
A1 Lakshminarayanan, Vasudevan
AB Observer sensitivity to edge blur has been examined by experimental measurements of threshold blur as a function of contrast. An extension of previous results from Watt and Morgan for high-contrast blur edges is discussed and analyzed. We propose a psychophysical test based on a two-alternative forced choice test. The results found for three adult observers show a comparable behavior. A tendency for the blur threshold to reach an average value as contrast increases is mainly discussed. These results complement previous ones from other authors for which low- and intermediate-contrast ranges were analyzed. The observed behavior suggests a need to improve algorithms for image quality assessment, extending the actual range of contrast values to high-contrast ones.
PB Academic Press Inc. / Elsevier Science
SN 1047-3203
YR 2001
FD 2001-09
LK https://hdl.handle.net/20.500.14352/59063
UL https://hdl.handle.net/20.500.14352/59063
LA eng
NO Sanz, I., Chevalier Del Río, M., Lakshminarayanan, V. «Perception of High-Contrast Blurred Edges». Journal of Visual Communication and Image Representation, vol. 12, n.o 3, septiembre de 2001, pp. 240-54. DOI.org (Crossref), https://doi.org/10.1006/jvci.2001.0473.
NO © 2001 Academic Press.OSA Annual Meeting (1998. Baltimore, Maryland, EE.UU). OSA Annual Meeting (1999. Santa Clara, California, EE.UU)Partial results were presented at the Annual Meeting of the Optical Society of America (Baltimore, 4–9 October 1998 and Santa Clara, September, 1999). The financial assistance from the Complutense University of Madrid Multidisciplinary Project PR486/97-7477/97) is acknowledged. We are indebted to Professor Jay M. Enoch for helpful suggestions and discussions. The authors also thank an anonymous referee for a careful review.
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 19 mar 2026