title: Perceptual scales for chromatic and luminance blur in noise textures.
abstract: We have measured the relative perceptual scales for chromatic and luminance blur in dense textures comprised of color and luminance Gabors, using a modification of the method of paired comparisons. We find that the rate at which perceived blur grows with physical blur, when normalized to 1.0 for luminance, is 0.2 for red-green and 0.06 for blue-yellow blur. It is argued that the relatively severely compressed perceptual scales for red-green and blue-yellow blur are a contributary factor to the observation that when the color but not luminance layer of an image of a natural scene is blurred, there is little or no impression of blur (Wandell, 1995).
authors.forename: Frederick A A
authors.initials: FA
authors.lastname: Kingdom
authors.forename: Jason
authors.initials: J
authors.lastname: Bell
authors.forename: Christian
authors.initials: C
authors.lastname: Haddad
authors.forename: Alysha
authors.initials: A
authors.lastname: Bartsch
mesh_terms: D003118:Color Perception / Q000502:physiology*; D015350:Contrast Sensitivity / Q000502:physiology*; D006801:Humans; D008027:Light; D010364:Pattern Recognition, Visual / Q000502:physiology*; D014785:Vision, Ocular / Q000502:physiology*; D064232:Visual Analog Scale