NDLI: Real-time image based rendering from uncalibrated images

Content Provider	IEEE Xplore Digital Library
Author	Willems, G. Verbiest, F. Vergauwen, M. Van Gool, L.
Copyright Year	2005
Description	Author affiliation: ESAT/PSI-VISICS, Katholieke Universiteit Leuven, Belgium (Willems, G.; Verbiest, F.; Vergauwen, M.; Van Gool, L.)
Abstract	We present a novel real-time image-based rendering system for generating realistic novel views of complex scenes from a set of uncalibrated images. A combination of structure-and-motion and stereo techniques is used to obtain calibrated cameras and dense depth maps for all recorded images. These depth maps are converted into restrictive quadtrees, which allow for adaptive, view-dependent tessellations while storing per-vertex quality. When rendering a novel view, a subset of suitable cameras is selected based upon a ranking criterion. In the spirit of the unstructured lumigraph rendering approach a blending field is evaluated, although the implementation is adapted on several points. We alleviate the need for the creation of a geometric proxy for each novel view while the camera blending field is sampled in a more optimal, non-uniform way and combined with the per-vertex quality to reduce texture artifacts. In order to make real-time visualization possible, all critical steps of the visualization pipeline are programmed in a highly optimized way on commodity graphics hardware using the OpenGL Shading Language. The proposed system can handle complex scenes such as large outdoor scenes as well as small objects with a large number of acquired images.
Starting Page	221
Ending Page	228
File Size	679690
Page Count	8
File Format	PDF
ISBN	0769523277
ISSN	15506185
DOI	10.1109/3DIM.2005.66
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-13
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rendering (computer graphics) Layout Cameras Visualization Pipelines Image reconstruction Image converters Calibration Real time systems Graphics
Content Type	Text
Resource Type	Article

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