Share Email Print

Proceedings Paper

Perception Of High-Pass Filtered Images
Author(s): Eli Peli
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Many visual illusions and Gestalt grouping phenomena may be explained by low-pass filtering of these images by the visual system. However, the perceptions of these images are maintained even if such images are high-pass filtered before display, removing the low-frequency information. Many such high-pass filtered images can be treated as a form of two-dimensional amplitude modulation (2-D AM) signals. The low-frequency figure information is coded in the modulation envelope, which disappears with the carrier if low-pass filtered. The envelope may be retrieved (demodulated), using one of many non-linear operations followed by a low-pass filter. Theory and image-processing simulations show that the compressive non-linearity of the visual system suffices to demodulate these images. This model accounts for various perceptual phenomena associated with filtered images and band-limited psychophysical stimuli.

Paper Details

Date Published: 13 October 1987
PDF: 7 pages
Proc. SPIE 0845, Visual Communications and Image Processing II, (13 October 1987); doi: 10.1117/12.976497
Show Author Affiliations
Eli Peli, Tufts University School of Medicine and Harvard Medical School (United States)

Published in SPIE Proceedings Vol. 0845:
Visual Communications and Image Processing II
T. Russell Hsing, Editor(s)

© SPIE. Terms of Use
Back to Top