Layered depth images

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Layered depth images (1997)

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by Steven J. Gortler , Li-wei He , Michael F. Cohen

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455 - 29 self

BibTeX

@MISC{Gortler97layereddepth,
    author = {Steven J. Gortler and Li-wei He and Michael F. Cohen},
    title = {Layered depth images},
    year = {1997}
}

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Abstract

In this paper we present an efficient image based rendering system that renders multiple frames per second on a PC. Our method performs warping from an intermediate representation called a layered depth image (LDI). An LDI is a view of the scene from a single input camera view, but with multiple pixels along each line of sight. When n input images are preprocessed to create a single LDI, the size of the representation grows linearly only with the observed depth complexity in the n images, instead of linearly with n. Moreover, because the LDI data are represented in a single image coordinate system, McMillan's warp ordering algorithm can be successfully adapted. As a result, pixels are drawn in the output image in back to front order. No z-buffer is required, so alpha-compositing can be done efficiently without depth sorting. This makes splatting an efficient solution to the resampling problem.

Keyphrases

depth image single input camera view ldi data observed depth complexity single ldi output image multiple frame input image layered depth image single image coordinate system intermediate representation depth sorting efficient solution multiple pixel resampling problem method performs efficient image

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