The role of "contrast enhancement" in the detection and appearance of visual contours
The role of "contrast enhancement" in the detection and appearance of visual contours
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DOI：
10.1016/s0042-6989(97)00333-7
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发表时间：
1998-03-01
期刊：
影响因子：
1.8
通讯作者：
Field, DJ
中科院分区：
文献类型：
--
作者：
Hess, RF;Dakin, SC;Field, DJ
我们测试的命题，视觉轮廓的外观和检测的基础上增加的轮廓元素的感知对比度，首先，我们表明，轮廓的检测是很有可能在存在非常高的对比度的变化。第二，我们表明，包含在一个轮廓不会导致Gabor补丁出现更高的对比度比补丁以外的轮廓。这些结果表明，与目前的一些模型相反，对比度或其假设的生理相关性（早期皮层神经元的平均放电率）不是识别轮廓的决定性信息。(C)1998由Elsevier Science Ltd.出版。保留所有权利。
We test the proposition that the appearance and detection of visual contours is based on an increase in the perceived contrast of contour elements, First we show that detection of contours is quite possible in the presence of very high levels of variability in contrast. Second we show that inclusion in a contour does not induce Gabor patches to appear to be of higher contrast than patches outside of a contour. These results suggest that, contrary to a number of current models, contrast or its assumed physiological correlate (the mean firing rate of early cortical neurons) is not the determining information for identifying the contour. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.