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Automatically Controlled Morphing of 2D Shapes with Textures.

Tereshin, A., Adzhiev, V., Fryazinov, O., Marrington-Reeve, F. and Pasko, A., 2020. Automatically Controlled Morphing of 2D Shapes with Textures. The SIAM Journal on Imaging Sciences, 13 (1), 78 - 107.

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Official URL: https://epubs.siam.org/doi/abs/10.1137/19M1241581

DOI: 10.1137/19M1241581

Abstract

This paper deals with 2D image transformations from a perspective of a 3D heterogeneous shape modeling and computer animation. Shape and image morphing techniques have attracted a lot of attention in artistic design, computer animation, and interactive and streaming applications. We present a novel method for morphing between two topologically arbitrary 2D shapes with sophisticated textures (raster color attributes) using a metamorphosis technique called space-time blending (STB) coupled with space-time transfinite interpolation. The method allows for a smooth transition between source and target objects by generating in-between shapes and associated textures without setting any correspondences between boundary points or features. The method requires no preprocessing and can be applied in 2D animation when position and topology of source and target objects are significantly different. With the conversion of given 2D shapes to signed distance fields, we have detected a number of problems with directly applying STB to them. We propose a set of novel and mathematically substantiated techniques, providing automatic control of the morphing process with STB and an algorithm of applying those techniques in combination. We illustrate our method with applications in 2D animation and interactive applications.

Item Type:Article
ISSN:1936-4954
Uncontrolled Keywords:metamorphosis ; transfinite color interpolation ; space-time bounded blending ; signed distance fields
Group:Faculty of Media & Communication
ID Code:33366
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:07 Feb 2020 16:24
Last Modified:07 Feb 2020 16:24

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