Matting and Compositing for Fresnel Reflection on Wavy Surfaces
Yuki Endo1, Yoshihiro Kanamori1, Yukio Fukui1 and Jun Mitani1, 2
1University of Tsukuba, 2JST/ERATO
Abstract:
This paper introduces a framework that can extract an alpha matte from a single image with Fresnel reflection,
and that can composite other objects with the image such that plausible reflections are included. Our method
handles reflections in a plane with small undulations, for example, a water surface with waves or a glossy tabletop.
During the matting stage, our method first estimates the transmission color, which is assumed to be uniform, and
then calculates a reflection image and alpha matte based on user markups. However, accurate extraction of the
matte becomes challenging when a plane has small undulations because these create perturbations in the matte.
We therefore propose a filter that can refine the matte effectively. In the compositing stage, the reflection of a
composited object is synthesized by ray tracing in real time. We demonstrate the effectiveness of our method
through comparisons with ground-truth data and results using natural images as inputs.
Publications:
Yuki Endo, Yoshihiro Kanamori, Yukio Fukui and Jun Mitani: "Matting and Compositing for Fresnel Reflection on Wavy Surfaces," Computer Graphics Forum (Proc. of Eurographics Symposium on Rendering 2012), Vol. 31, No. 4, pp. 1435-1443, 2012.
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