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Fig. 5.30. Example natural image input for training the OR/OD/DR map. The top row shows a sequence of images presented to the right eye and the bottom row the corresponding images presented to the left eye. The two sequences are identical except for brightness; in this example, the right eye was randomly chosen to be darker than the left. The sequence represents a short movie where the image is moving to the left and slightly downward. The original image is from a dataset by Shouval et al. (1996, 1997).