Asymmetric effects of luminance and chrominance in the watercolor illusion
- BiologyFront. Hum. Neurosci.
The hue dependence of the watercolor illusion when inducing colors are flanked with brighter (increment) as opposed to darker outer lines is measured, finding the strength of spreading is stronger for bluish (+S cone input) colors compared to yellowish (−S cones input) ones, when bounded by a dark line.
The watercolor effect: a new principle of grouping and figure–ground organization
- PhysicsVision Research
The phenomenal dissociation between coloration and object-hole effects in the watercolor illusion
- PhysicsVisual Neuroscience
The results of two experiments suggest that the coloration effect can be dissociated from the object-hole one, and a simple summation hypothesis of the underlying effects composing the whole figurality is discussed.
Assimilative and non-assimilative color spreading in the watercolor configuration
- Environmental ScienceFront. Hum. Neurosci.
The results suggest that the assimilative and the non-assimilative color spreading were mediated by different visual mechanisms and suggest that additional mechanisms are needed to account for thenon-assimilation color spreading.
Brightness alteration with interweaving contours
This study examines a particular colour induction that manifests in concomitance with an opposite effect of colour saturation (or anti-spread), and illustrates various manifestations of this twofold phenomenon and compares its effects with the known effects of brightness and colour induction.
The watercolor effect: Quantitative evidence for luminance-dependent mechanisms of long-range color assimilation
- BiologyVision Research
Flank Transparency: The Effects of Gaps, Line Spacing, and Apparent Motion
We analyze the properties of a dynamic color-spreading display created by adding narrow colored flanks to rigidly moving black lines where these lines fall in the interior of a stationary virtual…
Old Maps and the Watercolor Illusion: Cartography, Vision Science and Figure-Ground Segregation Principles
Long-range color spreading is studied in two experiments in which a purple contour is flanked by an orange contour. The color faintly but uniformly fills in the surface from the orange contour…
Influence of context on spatial expanse of color spreading in the watercolor illusion.
- Psychology, PhysicsAttention, perception & psychophysics
The present experiments explored how local and global stimulus factors influence the spatial expanse of WCI color spreading by determining where color spreads in a variety of contexts.
The discoloration illusion
- BiologyVisual Neuroscience
The results suggest that discoloration is not a lightness illusion and does not depend on simultaneous contrast or on achromatic mechanisms, but more likely on chromatic mechanisms that, through the luminance chromatic gradient, provide cues about the interactions of light and surface and model the volume by depicting lights and shades.
SHOWING 1-10 OF 42 REFERENCES
The Neon Color Effect in the Ehrenstein Illusion
Van Tuijl's neon color effect arises in the Ehrenstein figure if a colored cross is added such as to connect the black arms across the central gap and has the same hue as the inducing cross.
Neon Color Spreading: A Review
This paper is about a phenomenon that combines a delicate beauty with a profoundsignificance for understanding visual perception that has substantial implications regarding the way in which the visual system usesseemingly incomplete stimuli to generate meaningful percepts, segregate objects from their backgroundss, and provide them with color and depth.
Influence of boundary information on the perception of color.
- PhysicsJournal of the Optical Society of America. A, Optics, image science, and vision
The influence of spatial structure superimposed on gratings can both facilitate and impair contrast sensitivity, and in the presence of sharp boundaries, chromatic sensitivity is increased and reduced when the boundaries are present.
Assimilation: Asymmetry between brightness and darkness?
- PhysicsVision Research
Colour at edges and colour spreading in McCollough effects
- PhysicsVision Research
Studies of anomalous contrast and assimilation.
- Environmental ScienceJournal of the Optical Society of America
Studies of von Bezold type of “spread” or assimilation, wherein white lines lighten and black lines darken contiguous areas, have shown that the effect depends upon both absolute and relative widths…
Neural dynamics of form perception: boundary completion, illusory figures, and neon color spreading.
- BiologyPsychological review
Abstract A real-time visual processing theory is used to analyse real and illusory contour formation, contour and brightness interactions, neon color spreading, complementary color induction, and…
Assimilative hue shifts in color depend on bar width
Hue shifts were measured in isoluminant color gratings whose bar width was varied from 2′ to 20′ of visual angle. Subjects matched the hues in each grating with individual Munsell swatches. Hue…
Color Filling-in under Steady Fixation: Behavioral Demonstration in Monkeys and Humans
Monkeys' responses reflected perceptual filling-in, rather than random behavior, and were significantly higher for static disks with blurred borders than for moving disks or disks with sharp borders.