Role of color memory in successive color constancy

Ling, Yazhu; Hurlbert, Anya

doi:10.1364/josaa.25.001215

Cited by 45 publications

(50 citation statements)

References 34 publications

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“…Recently, a study by Ling and Hurlbert (2008) investigated how colour memory affects successive colour constancy. They found that memory is a limiting factor on constancy and that, once memory was taken into account, colour constancy was nearly perfect.…”

Section: Introductionmentioning

confidence: 99%

Effects of Memory Colour on Colour Constancy for Unknown Coloured Objects

Granzier

Gegenfurtner

2012

i-Perception

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The perception of an object's colour remains constant despite large variations in the chromaticity of the illumination—colour constancy. Hering suggested that memory colours, the typical colours of objects, could help in estimating the illuminant's colour and therefore be an important factor in establishing colour constancy. Here we test whether the presence of objects with diagnostical colours (fruits, vegetables, etc) within a scene influence colour constancy for unknown coloured objects in the scene. Subjects matched one of four Munsell papers placed in a scene illuminated under either a reddish or a greenish lamp with the Munsell book of colour illuminated by a neutral lamp. The Munsell papers were embedded in four different scenes—one scene containing diagnostically coloured objects, one scene containing incongruent coloured objects, a third scene with geometrical objects of the same colour as the diagnostically coloured objects, and one scene containing non-diagnostically coloured objects (eg, a yellow coffee mug). All objects were placed against a black background. Colour constancy was on average significantly higher for the scene containing the diagnostically coloured objects compared with the other scenes tested. We conclude that the colours of familiar objects help in obtaining colour constancy for unknown objects.

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Section: Introductionmentioning

confidence: 99%

Effects of Memory Colour on Colour Constancy for Unknown Coloured Objects

Granzier

Gegenfurtner

2012

i-Perception

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“…Overall, photographs of natural scenes seen in color are recognized quicker and remembered better than when grayscale is used [19,20] and even in the case of simple lights, chromatic components are better remembered than brightness ones [21]. Our ability to remember colors has been put to practical use in applications such as color quality metrics for solid-state light sources [22] and to enhance digital images [23] and plays a significant role in color constancy [24][25][26][27].Given this important role of color in visual memory, large biases would be somewhat surprising. However, our results do confirm previous studies in finding an increase in saturation in the memory construct compared to direct viewing.…”

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confidence: 99%

Bias effects of short- and long-term color memory for unique objects

2016

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Are objects remembered with a more saturated color? Some of the evidence supporting this statement comes from research using 'memory colors' -the typical colors of particular objects, for example the green of grass. The problematic aspect of these findings is that many different exemplars exist, some of which might exhibit a higher saturation than the one measured by the experimenter. Here we avoid this problem by using unique personal items and comparing long-and short-term color memory matches (in Hue, Value and Chroma) with those obtained with the object present. Our results, on average, confirm that objects are remembered as more saturated than they are. © 201X Optical Society of AmericaOCIS codes : (330.0330) Vision, color, and visual optics; (330.1690) Color; (330.1720 1.IntroductionIn our everyday life color is a property strongly associated with objects and we have all heard and maybe even seen with our mind's eye the "red rose" of Robert Burn's poem or the "green grass of home" sung by Tom Jones. This idea of linking certain objects with a defined color was formalized by Hering and Katz in the early 20 century, as discussed in [1,2]. Subsequently Koffka [3] and others put forward the specific hypothesis that colors are remembered more saturated, in line with the Gestalt hypothesis of change towards better or the ideal; sometimes identified as a 'positive time error ' [4]. A modern formulation of this can now be found as a statement of fact in some image processing [5] and photography books [6]. However in more than 80 years of research into color and memory the evidence to support this has been inconclusive at best.Hanawalt & Post [2] report 4 studies using different methods to explicitly test for an increase in saturation of remembered colors. They used abstract color stimuli, different task and timings; under none of their tested conditions they find that remembered colors are more saturated.In Newhall et al. [7] the main experiment is a study using colored lights (2 deg visual field) presented against a neutral background where the authors compared simultaneous color matches with successive. The latter being the memory task, where after a gap of 5 sec. participants were asked to set the colorimeter to the color that had been previously presented also for 5 sec. A comparison between the matches in the simultaneous and the successive condition indicates a consistent increase in Munsell Chroma (and Value to a lesser extent) for the memory matches. In this paper they also describe an older study (their Supplementary Experiment 3) in which participants are asked to select Munsell samples that best represent the recalled colors of a series of unseen objects of highly diagnostic color (brick, sand, grass and dry grass, skin, concrete, pine trees and weathered wood). For some of these objects the memory matches seem to be of higher Munsell Chroma and Value than the 'standards' they compare them to. This latter experiment was recreated by Bartleson [8] using essentially the same methods and arriving at s...

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“…Finally, twoway ANOVA was used to observe the IR performance of the high-score group. ''Hue factor'' passed the test for significance (F (1.26) ¼ 16.54, P ¼ 0.000 \ 0.005); the ''Brightness factor'' also passed the test for significance (F (1,26) ¼ 5.107, P ¼ 0.032 \ 0.05). However, the interaction between the two did not pass the test for significance.…”

Section: Figmentioning

confidence: 95%

“…Whether brightness guidance was shown or hidden did not pass the test for significance; hence, this meant that the brightness factor had no significant influence on the high-score group's IR. However, after conducting the T-test for the hue factor, whether the hue guidance was shown or hidden in a ''Brightness Shown'' context made a difference to the IR of the high-score group and passed the test for significance (T (26) However, the trend of the loci in Fig. 9(a) showed a similar performance from the high-score group and the mid- score group.…”

Section: Figmentioning

confidence: 97%

“…In another study based on long-term memory, Jin and Shevell 25 found that the color memory people relied on their color constancy performance that was based on inferred spectral reflectance rather than the light absorbed by three types of cone. At the same time, Ling and Hurlbert 26 found that successive matching produced imperfect results for color constancy when people relied on color memory, whether there were any changes in illuminant or not. This raises an interesting question: if color memory is ineffective due to poverty, what cues do people rely on to improve their color memory and achieve color constancy?…”

Section: Color Memory In Successive Matchingmentioning

confidence: 99%

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Color constancy, color‐mixing ability, and color inference

Lin

Sun

2010

Color Research & Application

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In the laboratory, the performance of color constancy has always been unstable. The variables posed by the subjects themselves tend to be neglected. In this study, a simple color-mixing test was used to sort subjects into three groups. They were also provided with hue and brightness in a fixed color order as guidance during experimental tasks in an attempt to observe any changes in cognitive skills among subjects of varying color-mixing abilities under changed illuminations. Three hypotheses were proposed: (1) Matching hypothesis: people remember and apply the spatial locations of color surrounds to the target color to achieve color constancy; (2) Comparing hypothesis: people identify the relative difference between color surrounds to achieve color constancy; and (3) Reasoning hypothesis: people compare the color surrounds and refer to color knowledge accumulated in the past to achieve color constancy through reasoning. The experimental results were as follows if the Comparing hypothesis is taken into account, (a) when hue guidance is hidden the subjects' identification rate (IR) performance supported the Reasoning hypothesis; (b) when hue guidance was shown, the IR performance of subjects in all three groups supported the Matching hypothesis. Based on these results, this study offers two recommendations: (a) color surrounds with a fixed relative location should be avoided because spatial location memory leading to people using matching skills and (b) subjects should be screened based on their color-mixing ability because significant differences in color constancy performance exist between people with varying levels of color-mixing ability.

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Role of color memory in successive color constancy

Cited by 45 publications

References 34 publications

Effects of Memory Colour on Colour Constancy for Unknown Coloured Objects

Effects of Memory Colour on Colour Constancy for Unknown Coloured Objects

Bias effects of short- and long-term color memory for unique objects

Color constancy, color‐mixing ability, and color inference

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