Weiss Yair, Simoncelli Eero P, Adelson Edward H
School of Computer Science and Engineering, Hebrew University of Jerusalem, Givat Ram Campus, Jerusalem 91904, Israel.
Nat Neurosci. 2002 Jun;5(6):598-604. doi: 10.1038/nn0602-858.
The pattern of local image velocities on the retina encodes important environmental information. Although humans are generally able to extract this information, they can easily be deceived into seeing incorrect velocities. We show that these 'illusions' arise naturally in a system that attempts to estimate local image velocity. We formulated a model of visual motion perception using standard estimation theory, under the assumptions that (i) there is noise in the initial measurements and (ii) slower motions are more likely to occur than faster ones. We found that specific instantiation of such a velocity estimator can account for a wide variety of psychophysical phenomena.
视网膜上局部图像速度的模式编码了重要的环境信息。尽管人类通常能够提取这些信息，但他们很容易被欺骗而看到错误的速度。我们表明，这些“错觉”在一个试图估计局部图像速度的系统中自然产生。我们使用标准估计理论建立了一个视觉运动感知模型，假设如下：（i）初始测量中存在噪声；（ii）较慢的运动比较快的运动更有可能发生。我们发现，这种速度估计器的特定实例可以解释各种各样的心理物理学现象。
