Perceptually Oriented Patch Based Texture Synthesis
نویسندگان
چکیده
Title of Thesis: Perceptually Oriented Patch Based Texture Synthesis Patrick Gillespie, Master of Science, 2006 Thesis Advisor: Dr. Marc Olano Patch-based texture synthesis methods work by taking patches of texture and finding the best way to “stitch” them together so that the seam between the two patches is hardly noticeable. The color difference along a cut between the two patches is usually used as the metric for finding the best seam between the images and traditionally red, green, and blue values are used in determining the color difference. This works well for randomized textures, but can leave artifacts in textures that include definite objects within the patches. We have made use of knowledge of the human visual system to find better seams between patches. We have used perceptually uniform color spaces, edge detection, an alternative graph structure, and the contrast sensitivity function as factors in graph cuts in order to find better seams between images. A user study showed that the new metric significantly improved seam invisibility in images that were spliced together. Perceptually Oriented Patch Based Texture Synthesis by Patrick Gillespie Thesis submitted to the Faculty of the Graduate School of the University of Maryland in partial fulfillment of the requirements for the degree of Master of Science 2006
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