Cryptic coloration AND VISUAL RECOGNITION OF PATTERNS IN NATURE
Project/Area Number |
06808037
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Research Category |
Grant-in-Aid for General Scientific Research (C)
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Allocation Type | Single-year Grants |
Research Field |
Intelligent informatics
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Research Institution | DOSHISHA UNIVERSITY |
Principal Investigator |
BANDO Toshihiro DOSHISHA UNIVERSITY,DEPT.KNOWLEDGE ENG.&COMP.SCI., 工学部, 助教授 (50145463)
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Project Period (FY) |
1994 – 1995
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Project Status |
Completed (Fiscal Year 1995)
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Budget Amount *help |
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1995: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1994: ¥1,400,000 (Direct Cost: ¥1,400,000)
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Keywords | Vision / Patterns in nature / Camouflage / Texture / Cryptic coloration / 自然のパターン |
Research Abstract |
Patterns in nature consist of complex mosaics of various brightness levels and colors. They are in contrast to artificial patterns that tend to be simple and plain. Men and animals that have been living in natural environment should have good visual capacities to perceive this feature of natural patterns, in other words, texture, if they have evolved in nature adaptively. In natural environment there are various animals that show us skillful technique to conceal themselves within the background patterns. In many cases they imitate not only general color and brightness of backgrounds but also texture of them. Resemblance in texture makes the contour shape of the animal obscure and hides their existence whthin the background. Flounders realize concealment on the bottom of the sea by reproducing the texture pattern of their background sand or gravel not by imitating average color and brightness of them. If they reproduce monotonous plane of average color and brightness on their body, it should be quite easy for us (and probably also for the fish and other animals in the sea) to find them out. In this study I show some examples that suggest the role of texture in our visual perception, and discuss the importance of texture in visual perception of natural patterns.
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Report
(3 results)
Research Products
(3 results)