Empirical Verification and Contrary Evidences of Color Constancy
| Autor: | Ta-wei Lin, 林大偉 |
|---|---|
| Rok vydání: | 2009 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 97 This study verifies and discusses color constancy with experimentation in terms of human vision and design. In color constancy definitions and interpretations, an operational definition for color constancy will be developed and 2 basic questions are posed by analyzing various color constancy definitions proposed by different schools based on classic color constancy theories. In the approach method, this study has collected major experiments of color constancy over the past 50 years to locate major factors affecting color constancy in three aspects: comparison time sequence, matching method, and subjects. With reference to the literature, this study attempts to establish an appropriate research framework based on the Brunswik’s Lens model (1956), and proposes 11 hypotheses in 5 groups in terms of the correlations among symbol, location, hue, lightness, color difference, subjective lightness ranking, and color temperature to compare and anchor two evaluative experiments in terms of 3 argumentative experiments: Memory, Inference, and Expectation to further examine the suitability of color constancy in human vision. These hypotheses include Context vs. Representation, Guidance vs. Inference, Relative Lightness vs. Analogue Lightness, Disregard vs. Expectation, White Patch vs. Gray World vs. Black Patch. This study also attempts to propose a human-vision-based color constancy cognition model by integrating the Communication Models of Shannon and Weaver (1949) according to basic framework established according to the operational definition of color constancy. By integrating the result to bottom-up process and top-down process from Cognitive Psychology, 3 cognitive modules, "Memory", "Reasoning", and "Comparison", and 2 patterns, "Pure bottom-up process" and "Bottom-up and top-down mixed process" are proposed to explain the possible cognitive strategies humans adopt to achieve color constancy. Also, after these 5 experiments, this study makes 3 color-constancy-related design recommendations for contemporary designers: (1) providing aggressive information, including color and extra-color information; (2) defining visual limits, including the minimum threshold values in surface colors and illuminant spectrum; and (3) improving designer resources, including design environment and designer formation. By doing so, this study attempts to develop an environmental identification design that is most suitable for human vision in sophisticated illumination environment during these times of continuous technological advancement. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|