Beyond fourth-order texture discrimination: generation of extreme-order and statistically-balanced textures.
Beyond fourth-order texture discrimination: generation of extreme-order and statistically-balanced textures.
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超越四阶纹理辨别：生成极端阶和统计平衡纹理。
DOI：
10.1016/j.visres.2004.03.032
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
Tyler,ChristopherW
中科院分区：
文献类型：
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作者：
Tyler,ChristopherW
[翻译]参考理论IT-8(1962)[84]介绍了统计定义的纹理及其感知辨别的概念。Julesz[科学。Am. 232(1975) 34]表明，在统计等同于三阶的情况下，可以区分四阶纹理。王志强，刘志强。选择,Soc。点。A 3(1986)[868]提供了多种范式，表明第四阶可能是人类纹理处理的极限。为了超越这一限制，现在引入了新的纹理范例，以避免亮度极值的污染，控制局部和远程纹理属性，并提供没有全局统计结构的纹理。新的定向格避免了局部亮度污染，其中高阶规则控制局部元素的方向而不是它们的颜色。这些纹理允许通过皮质模式元素对纹理辨别进行高达32秒的评估。通过随机条带旋转和独立纹理的交错处理，研究了远程处理。每一个都大大降低了四阶纹理的可见性，揭示了四阶信息主要是由随机统计的局部扰动而不是远程扰动传递的。最后，在所有阶上相等的纹理可以根据它们的全局统计来定义，但在人类视觉中可能很容易被区分。基于局部扰动的区分意味着人类视觉通过局部采样窗口来评估纹理，并且对较远距离的统计特性不敏感。
Julesz [IRE Trans. Inf. Theory IT-8 (1962) 84] introduced the concept of statistically defined textures and their perceptual discrimination. Julesz [Sci. Am. 232 (1975) 34] showed that discrimination was possible with statistics equated to third-order, specifying fourth-order textures. Klein and Tyler [J. Opt. Soc. Am. A 3 (1986) 868] offered a variety of paradigms suggesting that fourth order might be the limit on human texture processing. To go beyond this limit, new texture paradigms are now introduced to avoid contamination by luminance extrema, to control local and long-range texture properties, and to provide textures without global statistical structure. Local luminance contamination is avoided by novel orientation plaids, in which higher-order rules govern the orientation of local elements rather than their coloring. These textures allow evaluation of texture discrimination up to thirty-second order by cortical pattern elements. Long-range processing is studied by random strip rotation and by interlacing of independent textures. Each substantially degrades the visibility of the fourth-order textures, revealing that the fourth-order information is conveyed largely by local rather than long-range perturbations from random statistics. Finally, textures equated at all orders can be defined in terms of their global statistics, but may nevertheless readily be discriminated in human vision. The discrimination on the basis of local perturbations implies that human vision assesses textures through a local sampling window, and is largely insensitive to longer-range statistical properties.