Chen V J, D'Zmura M
Department of Cognitive Sciences, University of California at Irvine 92697, USA.
Perception. 1998;27(5):595-608. doi: 10.1068/p270595.
Models of color transparency suggest that a region in which colors of surfaces converge in color space will appear transparent. The convergence is described by a transparency parameter alpha and a target of convergence. To test such models psychophysically, observers were presented a display with four colored areas. The colors of three of the areas were chosen in advance by the experimenter. The task of the observer was to choose the color of the fourth area to make a central region appear transparent. Settings for the fourth color were collected for a total of twenty-four color combinations chosen from three planes in color space. Observers' settings agreed well with the model, which predicts that choices for the fourth color lie along a line segment in color space that is parameterized by alpha. The results suggest further that color discriminability and color opponency also influence transparency judgment.
颜色透明度模型表明，在颜色空间中表面颜色汇聚的区域会呈现出透明效果。这种汇聚由一个透明度参数α和一个汇聚目标来描述。为了从心理物理学角度测试此类模型，向观察者展示了一个包含四个彩色区域的显示屏。其中三个区域的颜色由实验者预先选定。观察者的任务是选择第四个区域的颜色，以使中央区域呈现出透明效果。针对从颜色空间的三个平面中选取的总共二十四种颜色组合，收集了第四个颜色的设置。观察者的设置与该模型吻合得很好，该模型预测第四个颜色的选择位于颜色空间中的一条线段上，该线段由α参数化。结果进一步表明，颜色辨别能力和颜色对立性也会影响透明度判断。
