![]() ![]() LicenseĬopyright 2010-2022 by Charles L.G. Just install thin, and execute:īrowse to localhost:3000 and everything should be happy. Random-dot stereogram (RDS) is stereo pair of images of random dots which, when viewed with the aid of a stereoscope, or with the eyes focused on a point in front of or behind the images, produces a sensation of depth, with objects appearing to be in front of or behind the display level. is a Rack file for using thin to run a temporary server on localhost:3000. Sometimes when uploading a pattern or depthmap it is added more then once.Īpparently the Canvas and File API's have security problems if they aren't being hosted off of a webserver. ![]() Android (not sure on the file upload, but the autostereogram renders on my Nexus One).I know it at least renders the autostereogram in: In order to construct stereograms with the help of the Wulff net it is most convenient to work on tracing paper over the net. CrossbrowserĪs this was a proof of concept hack, I didn't really focus much onĬross-browser testing. Method 2 Looking Beyond It 1 Find an object to focus on. If you lose focus on the image at any point, repeat the process from the beginning to refocus your eyes. My implementation is a very close translation of his C into javascript as my previous implementation of the algorithm left much to be desired in terms of image clarity. It can take anywhere from a few seconds to a few minutes for your eyes to naturally bring the hidden stereogram image into focus. I copied liberally from tutorials on local file upload, canvas and this description on how to create autostereograms. My javascript was pretty rough when I wrote it, and I'm a bit embarrassed by some of the code, but we all have to learn sometime. Clicking on the canvas will display the depthmap. Note that some of the depthmaps are encoding max depth as 0 instead of 255, so if it looks like the image is inside out, just use the invert depthmap checkbox. This is why reloading the page ditches any patterns or depthmaps you "uploaded". The neat thing about the file upload buttons is they aren't actually uploading to the server, just loading the image you select into the page. If you feel impatient, you can start creating a new. If you don't know what a stereogram (SIS) is, or how to see them, you can read the Wikipedia or my website or ask Google. This site allows to generate your own stereograms, based on one or two lines of text and a selected background pattern. If you dont know what a stereogram (SIS). mySIS: online custom stereograms creation. Using the radio buttons at the base of the page you can select which depthmap you want to render, and with which pattern to embed the stereogram in the tiling. This site allows to generate your own stereograms, based on one or two lines of text and a selected background pattern. Basically it generates a "Magic Eye" image out of a black and white depthmap and a pattern to replicate. I wrote this last summer as a quick hack to play around with javascript, specifically the new canvas and in browser uploading features. Stereograms (technically autostereograms, since you can view them without a special set of glasses) are maddening optical illusions, puzzles built into a seemingly chaotic array of colorful splotches. ![]()
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