Surface orientation from texture: Isotropy or homogeneity (or both)?
Surface orientation from texture: Isotropy or homogeneity (or both)?
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DOI：
10.1016/s0042-6989(96)00121-6
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发表时间：
1997-08-01
期刊：
影响因子：
1.8
通讯作者：
Malik, J
中科院分区：
文献类型：
--
作者：
Rosenholtz, R;Malik, J
我们考察了两种人类从纹理感知形状的模型，基于关于表面纹理的两个假设：各向同性和均质性，观察者在平面纹理表面上做出方向判断，表面纹理要么是各向同性的，要么是各向异性拉伸或压缩的，如果使用各向同性假设，他们会对各向异性纹理做出有偏的方向估计，在某些情况下，观察者对各向异性纹理相对于各向同性纹理没有偏见。总体而言，即使观察者表现出偏见，如果观察者只使用与各向同性的偏差作为提示，偏差也明显小于预测的偏差。观察者似乎既使用了各向同性的偏差，也使用了纹理渐变或仿射纹理失真提示来表示形状与纹理。(C)1997年爱思唯尔科学有限公司。
We examine two models for human perception of shape from texture, based on two assumptions about the surface texture: isotropy and homogeneity, Observers made orientation judgments on planar textured surfaces, Surface textures were either isotropic or anisotropically stretched or compressed, If subjects used an isotropy assumption, they would make biased orientation estimates for the anisotropic textures, In some conditions some observers showed no bias for the anisotropic textures relative to the isotropic textures. In general, even when the observers showed bias, the biases were significantly less than those predicted if the observer used only deviation from isotropy as a cue. Observers appear to use both the deviation from isotropy and a texture gradient or affine exture distortion cue for shape from texture. (C) 1997 Elsevier Science Ltd.