O'Brien J, Johnston A
Department of Psychology, University College London, UK. justin.o'
Perception. 2000;29(4):437-52. doi: 10.1068/p2955.
Both texture and motion can be strong cues to depth, and estimating slant from texture cues can be considered analogous to calculating slant from motion parallax (Malik and Rosenholtz 1994, report UCB/CSD 93/775, University of California, Berkeley, CA). A series of experiments was conducted to determine the relative weight of texture and motion cues in the perception of planar-surface slant when both texture and motion convey similar information. Stimuli were monocularly viewed images of planar surfaces slanted in depth, defined by texture and motion information that could be varied independently. Slant discrimination biases and thresholds were measured by a method of single-stimuli binary-choice procedure. When the motion and texture cues depicted surfaces of identical slants, it was found that the depth-from-motion information neither reduced slant discrimination thresholds, nor altered slant discrimination bias, compared to texture cues presented alone. When there was a difference in the slant depicted by motion and by texture, perceived slant was determined almost entirely by the texture cue. The regularity of the texture pattern did not affect this weighting. Results are discussed in terms of models of cue combination and previous results with different types of texture and motion information.
纹理和运动都可以作为深度的有力线索，从纹理线索估计倾斜度可以被认为类似于从运动视差计算倾斜度（马利克和罗森霍尔茨，1994年，报告UCB/CSD 93/775，加利福尼亚大学伯克利分校）。进行了一系列实验，以确定当纹理和运动传达相似信息时，在平面倾斜度感知中纹理和运动线索的相对权重。刺激物是通过单眼观察的深度倾斜平面的图像，由可以独立变化的纹理和运动信息定义。倾斜度辨别偏差和阈值通过单刺激二选一程序的方法进行测量。当运动和纹理线索描绘相同倾斜度的表面时，发现与单独呈现的纹理线索相比，来自运动的深度信息既没有降低倾斜度辨别阈值，也没有改变倾斜度辨别偏差。当运动和纹理描绘的倾斜度存在差异时，感知到的倾斜度几乎完全由纹理线索决定。纹理图案的规则性并不影响这种权重。根据线索组合模型和先前使用不同类型纹理和运动信息的结果对结果进行了讨论。
