Abstract: Four sets of random-dot stereograms were demonstrated to explore into the relationship between the scale, position,disparity,structure of the figure and texture of the image with the plastic capacity of human stereopsis. The main results are: (1) The plastic capacity of a set of random-dot stereograms is no more than 17%; (2) The plastic capacity of stereopsis is associated with the scale and po- sition of a figure. A large,distributed figure decreases the plastic ca- pacity; (3) The plastic capacity of stereopsis is associated with the disparity and the three-dimensional configuration of a figure. Large disparities and complex configurations decrease the plastic capacity; (4) The plastic capacity of stereopsis is also associated with the texture of the image. The capacity with dots or checkboard texture is larger than that with gauze-like patterns.

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