Geometry Images
Xianfeng Gu, Steven J. Gortler, Hugues Hoppe
In ACM Transactions on Graphics, 21(3), July 2002.
Abstract: Surface geometry is often modeled with irregular triangle meshes. The process of remeshing refers to approximating such geometry using a mesh with (semi)-regular connectivity, which has advantages for many graphics applications. However, current techniques for remeshing arbitrary surfaces create only semi-regular meshes. The original mesh is typically decomposed into a set of disk-like charts, onto which the geometry is parametrized and sampled. In this paper, we propose to remesh an arbitrary surface onto a completely regular structure we call a geometry image. It captures geometry as a simple 2D array of quantized points. Surface signals like normals and colors are stored in similar 2D arrays using the same implicit surface parametrization-texture coordinates are absent. To create a geometry image, we cut an arbitrary mesh along a network of edge paths, and parametrize the resulting single chart onto a square. Geometry images can be encoded using traditional image compression algorithms, such as wavelet-based coders.
Keyword(s): remeshing, surface parametrization
@article{Gu:2002:GI,
author = {Xianfeng Gu and Steven J. Gortler and Hugues Hoppe},
title = {Geometry Images},
journal = {ACM Transactions on Graphics},
volume = {21},
number = {3},
pages = {355--361},
month = jul,
year = {2002},
}
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