Psychophysical receptive fields of edge detection mechanisms
Psychophysical receptive fields of edge detection mechanisms
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DOI：
10.1016/j.visres.2003.11.021
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发表时间：
2004-04-01
期刊：
影响因子：
1.8
通讯作者：
Sachs, AJ
中科院分区：
文献类型：
--
作者：
Elder, JH;Sachs, AJ
边缘检测的理论通常假设一个前端线性阶段，涉及一些群体的神经过滤器。在这里，我们研究这些早期的机制，使用心理物理学技术，并评估了一些模型的边缘检测。我们测量了心理物理效率检测噪声亮度边缘刺激的刺激大小和形状的范围内。这些数据表明感受野形状和方向带宽的多样性，与生理证据一致，但与标准的多通道视觉处理模型不一致。(C)2003爱思唯尔有限公司。保留所有权利。
Theories of edge detection generally assume a front-end linear stage involving some population of neural filters. Here we study these early mechanisms using psychophysical techniques, and evaluate a number of models for edge detection. We measured psychophysical efficiency for detection of noisy luminance edge stimuli over a range of stimulus sizes and shapes. The data suggest a diversity in receptive field shape and orientation bandwidth, consistent with physiological evidence, but inconsistent with standard multi-channel models of visual processing. (C) 2003 Elsevier Ltd. All rights reserved.