| The objectives of this research program are: (1) To study systematically the interaction of visual attributes (color, luminance, orientation, spatial frequency, etc.) in textural grouping through psychophysical experiments. (2) To use the results of the above experiments and those of other researchers as a basis for improving existing neurophysiologically plausible computational models for texture segregation. (3) To investigate whether some strong similarities between texture and motion perception with chromatic oriented micropatterns also hold for micropatterns defined by other attributes.; Psychophysical experiments were developed to study the following: (1) The interaction of attributes in forming textures. (2) Comparison of the relative strength of two attributes when they are designed to form competing patterns. (3) Selective isolation of specific visual mechanism involved in segregating textual patterns. (4) Chromatic and achromatic motion perception. (5) Linear and non-linear mechanism in texture perception.; The data from the psychophysical experiments were used in building computational models for texture segregation. The texture model incorporate chromatic mechanisms to treat color images and the resulting models could be utilized in the areas of image processing, machine vision and pattern recognition, and scientific visualization. |
