Adelson E H, Bergen J R
J Opt Soc Am A. 1985 Feb;2(2):284-99. doi: 10.1364/josaa.2.000284.
A motion sequence may be represented as a single pattern in x-y-t space; a velocity of motion corresponds to a three-dimensional orientation in this space. Motion sinformation can be extracted by a system that responds to the oriented spatiotemporal energy. We discuss a class of models for human motion mechanisms in which the first stage consists of linear filters that are oriented in space-time and tuned in spatial frequency. The outputs of quadrature pairs of such filters are squared and summed to give a measure of motion energy. These responses are then fed into an opponent stage. Energy models can be built from elements that are consistent with known physiology and psychophysics, and they permit a qualitative understanding of a variety of motion phenomena.
一个运动序列可以表示为x-y-t空间中的单一模式；运动速度对应于该空间中的三维方向。运动信息可以由一个对定向时空能量做出响应的系统提取。我们讨论了一类人类运动机制模型，其中第一阶段由在时空上定向并在空间频率上调谐的线性滤波器组成。此类滤波器的正交对的输出进行平方和求和，以给出运动能量的度量。然后将这些响应输入到对立阶段。能量模型可以由与已知生理学和心理物理学一致的元素构建，并且它们允许对各种运动现象进行定性理解。
