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Issue No.05 - September/October (2010 vol.16)
pp: 777-790
Voicu Popescu , Purdue University, West Lafayette
Paul Rosen , Purdue University, West Lafayette
Laura Arns , NAWCWD, Lethality Analysis, NAVAIR, China Lake
Xavier Tricoche , Purdue University, West Lafayette
Chris Wyman , The University of Iowa, Iowa City
Christoph M. Hoffmann , Purdue University, West Lafayette
We introduce the general pinhole camera (GPC), defined by a center of projection (i.e., the pinhole), an image plane, and a set of sampling locations in the image plane. We demonstrate the advantages of the GPC in the contexts of remote visualization, focus-plus-context visualization, and extreme antialiasing, which benefit from the GPC sampling flexibility. For remote visualization, we describe a GPC that allows zooming-in at the client without the need for transferring additional data from the server. For focus-plus-context visualization, we describe a GPC with multiple regions of interest with sampling rate continuity to the surrounding areas. For extreme antialiasing, we describe a GPC variant that allows supersampling locally with a very high number of color samples per output pixel (e.g., 1,024{\times}), supersampling levels that are out of reach for conventional approaches that supersample the entire image. The GPC supports many types of data, including surface geometry, volumetric, and image data, as well as many rendering modes, including highly view-dependent effects such as volume rendering. Finally, GPC visualization is efficient—GPC images are rendered and resampled with the help of graphics hardware at interactive rates.
Nonuniform sampled images, interactive visualization, remote visualization, focus-plus-context, antialiasing.
Voicu Popescu, Paul Rosen, Laura Arns, Xavier Tricoche, Chris Wyman, Christoph M. Hoffmann, "The General Pinhole Camera: Effective and Efficient Nonuniform Sampling for Visualization", IEEE Transactions on Visualization & Computer Graphics, vol.16, no. 5, pp. 777-790, September/October 2010, doi:10.1109/TVCG.2010.22
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