Hunt Jonathan J, Mattingley Jason B, Goodhill Geoffrey J
Queensland Brain Institute, University of Queensland, St. Lucia, Queensland 4072, Australia.
Vision Res. 2012 Jul 1;64:49-55. doi: 10.1016/j.visres.2012.05.007. Epub 2012 Jun 9.
Biological visual systems are highly adapted to the image statistics of the natural world. A particularly important aspect of the statistics of natural scenes is the arrangements of edges they contain. Here, we examined how different arrangements of edges influence human perceptual saliency using a binocular rivalry paradigm. We constructed fields of randomly positioned Gabor patches with orientation arrangements containing co-oriented, co-circular and naturalistic structure. We rivalled these against arrangements with random orientations, which have higher entropy. Surprisingly, we found that fields with randomly oriented edges consistently dominated over the more ordered arrangements. These results suggest that visual scene entropy may be a key variable in early perceptual saliency.
生物视觉系统高度适应自然界的图像统计特性。自然场景统计特性中一个特别重要的方面是其所含边缘的排列。在此，我们使用双眼竞争范式研究了不同的边缘排列如何影响人类的感知显著性。我们构建了由随机定位的Gabor斑块组成的区域，其方向排列包含同向、共圆和自然主义结构。我们将这些与具有更高熵的随机方向排列进行竞争。令人惊讶的是，我们发现具有随机方向边缘的区域始终比更有序的排列占主导地位。这些结果表明，视觉场景熵可能是早期感知显著性的一个关键变量。
