Pong T C, Kenner M A, Otis J
Department of Computer Science, University of Minnesota, Minneapolis 55455.
Perception. 1990;19(2):161-70. doi: 10.1068/p190161.
Low-level preattentive vision processing is of special interest since it seems the logical starting point of all vision processing. Exploration of the human visual processing system at this level is, however, extremely difficult, but can be facilitated by the use of stroboscopic presentation of sequences of random-dot stereograms, which contain only local spatial and temporal information and therefore limit the processing of these images to the low level. Four experiments are described in which such sequences were used to explore the relationships between various cues (optical flow, stereo disparity, and accretion and deletion of image points) at the low level. To study these relationships in more depth, especially the resolution of conflicting information among the cues, some of the image sequences presented information not usually encountered in 'natural' scenes. The results indicate that the processing of these cues is undertaken as a set of cooperative processes.
低水平的前注意视觉处理特别引人关注，因为它似乎是所有视觉处理的逻辑起点。然而，在这个层面探索人类视觉处理系统极其困难，但使用随机点立体图序列的频闪呈现可以促进这一探索，这些序列仅包含局部空间和时间信息，因此将这些图像的处理限制在低水平。本文描述了四个实验，其中使用这样的序列来探索低水平下各种线索（光流、立体视差以及图像点的增减）之间的关系。为了更深入地研究这些关系，特别是线索之间冲突信息的解决，一些图像序列呈现了“自然”场景中通常不会遇到的信息。结果表明，这些线索的处理是作为一组协同过程进行的。
