![]() ![]() 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. If you see it, just post 'I see it' so that I know who found it. See if you can figure out what is on this stereogram, but don't spoil it for others. The random dot stereogram is very easy to understand, although not a trivial concept. In order to see the hidden words or images in stereograms, you have to kind of blur your eyes and focus beyond the screen. If any of these methods helps you to see stereograms, you can send us email, what method works for you. You must be patient, it may took few minutes to finally train your eyes to focus behind stereogram image and see 3D depth of stereogram. This tutorial shows how it works, with a simple 'do it by yourself' approach. In distance about 30 cm/11 inches you can start to see depth of stereogram. STEREOGRAM PICTURES WITH ANSWERS SERIESIt seeds the first series of pixels in a row from the pattern image. Stereograms are illusions of 3D surfaces. One way to accomplish this is to make the program scan every line in the output image pixel-by-pixel from left to right. Let your eyes go out of focus and move the phone slowly back and forth in front of you. 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. The program tiles the pattern image horizontally to cover an area whose size is identical to the depth map. 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. ![]()
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