Effects of motion on blur discrimination

Abstract

Blur-discrimination thresholds for moving, Gaussian-blurred edges were measured. Our results show that motion produces equivalent spatial blur. The velocity dependence of this blur is linear, and its extent can be predicted by a temporal impulse response with a standard deviation of ∼5 ms in normal room light. This blur is most likely to result from cameralike summation and not from the use of larger spatial filters for moving than for stationary objects. As a function of reference blur, blur-discrimination thresholds approach asymptotically a Weber’s-law relation. Motion-deblurring models are discussed in view of our findings, and an alternative model for temporal integration is proposed.

© 1994 Optical Society of America

No role for motion blur in either motion detection or motion-based image segmentation

Felix A. Wichmann and G. Bruce Henning
J. Opt. Soc. Am. A 15(2) 297-306 (1998)

Pedestal effect in visual motion discrimination

William A. Simpson and Barbara A. Finsten
J. Opt. Soc. Am. A 12(12) 2555-2563 (1995)

Effects of spatial frequency, duration, and contrast on discriminating motion directions

Jian Yang and Scott B. Stevenson
J. Opt. Soc. Am. A 14(9) 2041-2048 (1997)

Sequential recruitment in the discrimination of velocity

Suzanne P. McKee and Leslie Welch
J. Opt. Soc. Am. A 2(2) 243-251 (1985)

Motion thresholds can be predicted from contrast discrimination

Bettina L. Beard, Stanley A. Klein, and Thom Carney
J. Opt. Soc. Am. A 14(9) 2449-2470 (1997)