The effect of background and illumination on color identification of real, 3D objects
For the surface reflectance of an object to be a useful cue to object identity, judgments of its color should remain stable across changes in the object's environment. In 2D scenes, there is general consensus that color judgments are much more stable across illumination changes than backgrou...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2013-11-01
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| Series: | Frontiers in Psychology |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fpsyg.2013.00821/full |
| _version_ | 1818128312733532160 |
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| author | Sarah Ray Allred Maria eOlkkonen |
| author_facet | Sarah Ray Allred Maria eOlkkonen |
| author_sort | Sarah Ray Allred |
| collection | DOAJ |
| description | For the surface reflectance of an object to be a useful cue to object identity, judgments of its color should remain stable across changes in the object's environment. In 2D scenes, there is general consensus that color judgments are much more stable across illumination changes than background changes. Here we investigate whether these findings generalize to real 3D objects. Observers made color matches to cubes as we independently varied both the illumination impinging on the cube and the 3D background of the cube. As in 2D scenes, we found relatively high but imperfect stability of color judgments under an illuminant shift. In contrast to 2D scenes, we found that background had little effect on average color judgments. In addition, variability of color judgments was increased by an illuminant shift and decreased by embedding the cube within a background. Taken together, these results suggest that in real 3D scenes with ample cues to object segregation, the addition of a background may improve stability of color identification. |
| first_indexed | 2024-12-11T07:31:15Z |
| format | Article |
| id | doaj.art-5ce59ae9289146979c24338d656b1008 |
| institution | Directory Open Access Journal |
| issn | 1664-1078 |
| language | English |
| last_indexed | 2024-12-11T07:31:15Z |
| publishDate | 2013-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Psychology |
| spelling | doaj.art-5ce59ae9289146979c24338d656b10082022-12-22T01:15:49ZengFrontiers Media S.A.Frontiers in Psychology1664-10782013-11-01410.3389/fpsyg.2013.0082159285The effect of background and illumination on color identification of real, 3D objectsSarah Ray Allred0Maria eOlkkonen1Rutgers -- The State University of New JerseyRutgers -- The State University of New JerseyFor the surface reflectance of an object to be a useful cue to object identity, judgments of its color should remain stable across changes in the object's environment. In 2D scenes, there is general consensus that color judgments are much more stable across illumination changes than background changes. Here we investigate whether these findings generalize to real 3D objects. Observers made color matches to cubes as we independently varied both the illumination impinging on the cube and the 3D background of the cube. As in 2D scenes, we found relatively high but imperfect stability of color judgments under an illuminant shift. In contrast to 2D scenes, we found that background had little effect on average color judgments. In addition, variability of color judgments was increased by an illuminant shift and decreased by embedding the cube within a background. Taken together, these results suggest that in real 3D scenes with ample cues to object segregation, the addition of a background may improve stability of color identification.http://journal.frontiersin.org/Journal/10.3389/fpsyg.2013.00821/fullillumination3DobjectColor Contrastcolor appearanceconstancy |
| spellingShingle | Sarah Ray Allred Maria eOlkkonen The effect of background and illumination on color identification of real, 3D objects Frontiers in Psychology illumination 3D object Color Contrast color appearance constancy |
| title | The effect of background and illumination on color identification of real, 3D objects |
| title_full | The effect of background and illumination on color identification of real, 3D objects |
| title_fullStr | The effect of background and illumination on color identification of real, 3D objects |
| title_full_unstemmed | The effect of background and illumination on color identification of real, 3D objects |
| title_short | The effect of background and illumination on color identification of real, 3D objects |
| title_sort | effect of background and illumination on color identification of real 3d objects |
| topic | illumination 3D object Color Contrast color appearance constancy |
| url | http://journal.frontiersin.org/Journal/10.3389/fpsyg.2013.00821/full |
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