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An Image-Based Approach to Three-Dimensional Computer Graphics (1997)
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BibTeX
@MISC{McMillan97animage-based,
author = {Leonard McMillan and Jr.},
title = {An Image-Based Approach to Three-Dimensional Computer Graphics},
year = {1997}
}
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Abstract
The conventional approach to three-dimensional computer graphics produces images from geometric scene descriptions by simulating the interaction of light with matter. My research explores an alternative approach that replaces the geometric scene description with perspective images and replaces the simulation process with data interpolation. I derive an image-warping equation that maps the visible points in a reference image to their correct positions in any desired view. This mapping from reference image to desired image is determined by the center-of-projection and pinhole-camera model of the two images and by a generalized disparity value associated with each point in the reference image. This generalized disparity value, which represents the structure of the scene, can be determined from point correspondences between multiple reference images. The image-warping equation alone is insufficient to synthesize desired images because multiple reference-image points may map to a single point. I derive a new visibility algorithm that determines a drawing order for the image warp. This algorithm results in correct visibility for the desired image independent of the reference image’s contents. The utility of the image-based approach can be enhanced with a more general pinholecamera
Keyphrases
three-dimensional computer graphic image-based approach reference image generalized disparity value image-warping equation desired image geometric scene description perspective image conventional approach visible point multiple reference-image point multiple reference image simulation process image warp general pinholecamera point correspondence pinhole-camera model correct position single point correct visibility data interpolation desired view alternative approach new visibility algorithm algorithm result reference image content
