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Simple Formulas For Quasiconformal Plane Deformations

delete2012-09-07
delete11
PRE
AI
Y
Yaron Lipman *
V
Vladimir G. Kim
T
Thomas Funkhouser
DOI:10.1145/2231816.2231822delete
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Abstract

Abstract

En 中文
We introduce a simple formula for 4-point planar warping that produces provably good 2D deformations. In contrast to previous work, the new deformations minimize the maximum conformal distortion and spread the distortion equally across the domain. We derive closed-form formulas for computing the 4-point interpolant and analyze its properties. We further explore applications to 2D shape deformations by building local deformation operators that use thin-plate splines to further deform the 4-point interpolant to satisfy certain boundary conditions. Although this modification no longer has any theoretical guarantees, we demonstrate that, practically, these local operators can be used to create compound deformations with fewer control points and smaller worst-case distortions in comparisons to the state-of-the-art.
Keywords:
Algorithms
Planar warping
deformation
conformal
quasiconformal
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Journal

ACM Transactions on Graphics cover
ACM Transactions on Graphics
IF:
9.5
Papers:
4.7K
Citations:
3.6W

Organization

P
Princeton University
Scholars:
2.1W
Papers: 2.3W
Citations: 5.1W
W
Weizmann Institute of Science
Scholars:
1.3W
Papers: 1.1W
Citations: 2.3W