For every pixel, it subtracts the shift from the width of the pattern image to arrive at a repeat interval. Then it consults the depth map to retrieve appropriate shift values for subsequent pixels.
#A RANDOM DOT STEREOGRAM CONTAINS SERIES#
It seeds the first series of pixels in a row from the pattern image. One way to accomplish this is to make the program scan every line in the output image pixel-by-pixel from left to right. Conceptually, at every pixel in the output image, the program looks up the grayscale value of the equivalent pixel in the depth map image, and uses this value to determine the amount of horizontal shift required for the pixel. Figure 13.8 shows an example where the bottom row has a random-dot unit 16 dots wide, the next row up has the unit curtailed to 15 dots wide, and so on to the top row where the unit is. The program tiles the pattern image horizontally to cover an area whose size is identical to the depth map. A random-dot auto-stereogram has a laterally-repeating pattern unit composed of small dots, randomly set as black or white (or any range of intensities). the program will even generate a realtime random dot stereogram The first game to be enhanced for the then-new Pentium processor (as advertised proudly on the front of the box). A type of anaglyph for studying binocular depth perception invented by the Hungarian-born US radar engineer and psychologist Bela Julesz (19282003) at Bell Telephone Laboratories in 1960, consisting of two random arrays of dots that when viewed stereoscopically, one array being viewed by each eye, appears to contain a form such as a triangle or square lying in a plane either in front or. The missing levels are: 9, 18, 29, 34 and 40. The wikipedia article on autostereograms describes the algorithm for creating depth map based stereograms like this:Ī computer program can take a depth map and an accompanying pattern image to produce an autostereogram. Magic Carpet does not contain all of the 50 levels described in the manual.
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