Line Etching Effect for Photographic Images

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This Demonstration produces halftones from a continuous tone image, replacing rows and columns of pixels by a spiral of varying gray-level intensity or hue. This gives the image an etching effect similar to the medieval single line engraving technique [1]. Use the locator to move the center of the spiral.

Contributed by: Erik Mahieu (July 2012)
Open content licensed under CC BY-NC-SA


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