Sharpening of drifting, blurred images

Area of Science:

• Vision Science
• Perceptual Psychology

Background:

• The visual system's sluggish temporal response typically leads to expected image blur.
• Existing motion deblurring models focus on preserving sharp contours, not enhancing blur appearance.

Purpose of the Study:

• To investigate the perceived blur of moving images.
• To determine if motion can sharpen blurred images and explore contributing factors like velocity and contrast.

Main Methods:

• Subjects matched perceived blur of drifting, blurred images (sine gratings, edges) to static counterparts.
• Experiments were conducted in a dimly lit room, varying image velocity and contrast.

Main Results:

• Perceived blur decreased as drift speed and contrast increased.
• Moving blurred images were perceived as sharper than their static equivalents.

Conclusions:

• Motion actively sharpens the appearance of blurred images, a phenomenon not fully explained by current motion deblurring models.
• The visual system possesses a mechanism that enhances the sharpness of moving, blurred visual information.