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  Psychologically Relevant Features of Color Patterns

Restat, J. (2003). Psychologically Relevant Features of Color Patterns. Poster presented at 6. Tübinger Wahrnehmungskonferenz (TWK 2003), Tübingen, Germany.

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Restat, J1, 2, Author           
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              


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 Abstract: Besides color and shape, texture is one of the basic dimensions of images. While there has been some research on the psychological dimensions of gray textured patterns, up to now, there has been reported only one study on the categories of human similarity ratings of color patterns (Mojsilovic et al., 2000, IEEE Transactions on image processing). To test the reliability of the reported relevant pattern features, we repeated the study with new stimuli (20 colored patterns, which were chosen in a pre-test from a large database of patterns). These were presented on a large computer display (24") in 40 rounds with one target pattern and 10 other test patterns at a time. The participants had to indicate the perceived similarity of the test patterns by placing them in an accordant horizontal distance to the target pattern. The distance was encoded as dissimilarity measurement on a scale from 1 (very similar) to 100 (totally dierent). Using multidimensional scaling techniques, four independent dimensions could be extracted from the participants' ratings: 1. Directionality. This dimension differentiates between the patterns with continuous lines and the patterns with closed and rounded lines. 2. Color purity. This dimension dierentiates between the black-and-white and pale patterns and the patterns with saturated and vivid colors. 3. Color tone. In the overall-solution, this dimension differentiates between patterns containing red and the other patterns. Additional single-case-analyses indicated that \red" as a distinctive feature of pattern similarity was a \majority decision"; at least some participants favored \green" as being distinctive against all other colors. 4. Regularity, Orientation and Complexity. Basically, the structural blueprints of the patterns in this dimension change from being symmetrical and orthogonal on one side over being diagonally oriented and of disturbed symmetry to complete asymmetry on the other side. The four dimensions account for 54% of the overall variance of the participants' ratings. Several psychologically relevant features from the foregoing study could be replicated (directionality, regularity, orientation, complexity and color purity), indicating their general importance in pattern similarity judgments. Two other dimensions did not play a role in our outcomes (\pattern heaviness" and chromaticity), and our dimension \color tone" did not show up in the earlier study. Seemingly, the saliency of these features depends more on the stimulus material than the foregoing.


 Dates: 2003-02
 Publication Status: Published in print
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Title: 6. Tübinger Wahrnehmungskonferenz (TWK 2003)
Place of Event: Tübingen, Germany
Start-/End Date: 2003-02-21 - 2003-02-23

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Title: 6. Tübinger Wahrnehmungskonferenz: Sixth Perception Conference at Tübingen, TWK 2003
Source Genre: Journal
Bülthoff, HH1, Editor           
Gegenfurtner, KR, Editor           
Mallot, HA, Editor           
Ulrich, R, Editor
Wichmann, FA1, Editor           
1 Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794            
Publ. Info: Kirchentellinsfurt, Germany : Knirsch
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 64 Identifier: ISBN: 3-927091-62-6