Encoding and estimation of first- and second-order binocular disparity in natural images.
Encoding and estimation of first- and second-order binocular disparity in natural images.
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DOI：
10.1016/j.visres.2015.10.016
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发表时间：
2016-03
期刊：
影响因子：
1.8
通讯作者：
Hunter DW
中科院分区：
文献类型：
--
作者：
Hibbard PB;Goutcher R;Hunter DW
自然双目图像的一阶和二阶响应是相关的。二阶机制可以提高视差估计的准确性。二阶机制可以扩大双眼立体视觉的深度范围。在视觉皮层中处理双眼信息的第一阶段是由针对空间频率和方向进行带通调谐的机制执行的。心理物理学和生理学的证据也证明了在双眼处理中存在二级机制，它可以编码一级机制无法直接访问的差异。我们比较了一阶和二阶双目滤波器对自然图像的响应。我们发现，二阶机制的响应在一定程度上与一阶机制的响应相关，并且它们可以有助于增加双眼立体视觉的精度和深度范围。
First- and second-order responses to natural binocular images are correlated. Second-order mechanisms can improve the accuracy of disparity estimation. Second-order mechanisms can extend the depth range of binocular stereopsis. The first stage of processing of binocular information in the visual cortex is performed by mechanisms that are bandpass-tuned for spatial frequency and orientation. Psychophysical and physiological evidence have also demonstrated the existence of second-order mechanisms in binocular processing, which can encode disparities that are not directly accessible to first-order mechanisms. We compared the responses of first- and second-order binocular filters to natural images. We found that the responses of the second-order mechanisms are to some extent correlated with the responses of the first-order mechanisms, and that they can contribute to increasing both the accuracy, and depth range, of binocular stereopsis.