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Proceedings Paper

Improvement in perception of image sharpness through the addition of noise and its relationship with memory texture
Author(s): Xiazi Wan; Hiroyuki Kobayashi; Naokazu Aoki
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Paper Abstract

In a preceding study, we investigated the effects of image noise on the perception of image sharpness using white noise, and one- and two-dimensional single-frequency sinusoidal patterns as stimuli. This study extends our preceding study by evaluating natural color images, rather than black-and-white patterns. The results showed that the effect of noise in improving image sharpness perception is more evident in blurred images than in sharp images. This is consistent with the results of the preceding study. In another preceding study, we proposed "memory texture" to explain the preferred granularity of images, as a concept similar to "memory color" for preferred color reproduction. We observed individual differences in type of memory texture for each object, that is, white or 1/f noise. This study discusses the relationship between improvement of sharpness perception by adding noise, and the memory texture, following its individual differences. We found that memory texture is one of the elements that affect sharpness perception.

Paper Details

Date Published: 17 March 2015
PDF: 11 pages
Proc. SPIE 9394, Human Vision and Electronic Imaging XX, 93941B (17 March 2015); doi: 10.1117/12.2082922
Show Author Affiliations
Xiazi Wan, Chiba Univ. (Japan)
Hiroyuki Kobayashi, Chiba Univ. (Japan)
Naokazu Aoki, Chiba Univ. (Japan)

Published in SPIE Proceedings Vol. 9394:
Human Vision and Electronic Imaging XX
Bernice E. Rogowitz; Thrasyvoulos N. Pappas; Huib de Ridder, Editor(s)

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