This publication documented a series of experiments in which a sequence of images representing the same view at two different times were compared in order to deduce any motion happening at that time. Each image was blurred, and the difference in magnitude between the images at each point was multiplied by the normal of the image at that point to determine the relative motion. This is similar to the "barber's pole" effect, where a spinning barber's pole appears to be moving up, rather than around.
My responsibilities in this project were to write the software that performed the calculations on the images and display the results on the screen and in print.
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