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  1. Proceedings of the 5th international symposium on Non-photorealistic animation and rendering (NPAR '07)
  2. Automating joiners
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3D collage: expressive non-realistic modeling
Coherent line drawing
Illustrative rendering in Team Fortress 2
Structure-preserving manipulation of photographs
Modeling with rendering primitives: an interactive non-photorealistic canvas
Hybrid quantitative invisibility
Stylized shadows
Illustration of complex real-world objects using images with normals
Sketching, scaffolding, and inking: a visual history for interactive 3D modeling
Isophote distance: a shading approach to artistic stroke thickness
Using NPR to evaluate perceptual shape cues in dynamic environments
Automating joiners
Single camera flexible projection
Highlight lines for conveying shape
Engaging viewers through nonphotorealistic visualizations
Motion cues for illustration of skeletal motion capture data

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Automating joiners

Content Provider ACM Digital Library
Author Perona, Pietro Zelnik-Manor, Lihi
Abstract Pictures taken from different view points cannot be stitched into a geometrically consistent mosaic, unless the structure of the scene is very special. However, geometrical consistency is not the only criterion for success: incorporating multiple view points into the same picture may produce compelling and informative representations. A multi viewpoint form of visual expression that has recently become highly popular is that of joiners (a term coined by artist David Hockney). Joiners are compositions where photographs are layered on a 2D canvas, with some photographs occluding others and boundaries fully visible. Composing joiners is currently a tedious manual process, especially when a great number of photographs is involved. We are thus interested in automating their construction. Our approach is based on optimizing a cost function encouraging image-to-image consistency which is measured on point-features and along picture boundaries. The optimization looks for consistency in the 2D composition rather than 3D geometrical scene consistency and explicitly considers occlusion between pictures. We illustrate our ideas with a number of experiments on collections of images of objects, people, and outdoor scenes.
Starting Page 121
Ending Page 131
Page Count 11
File Format PDF
ISBN 9781595936240
DOI 10.1145/1274871.1274890
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2007-08-04
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Composition Joiner Panorama Multiple view point Mosaic
Content Type Text
Resource Type Article
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