NORMALIZED CROSS-CORRELATION USING SOFT

被引：3

作者：

Huhle, Benjamin ^{[1
]}

Schairer, Timo ^{[1
]}

Strasser, Wolfgang ^{[1
]}

机构：

[1] Univ Tubingen, WSI GRIS, Sand 14, D-72076 Tubingen, Germany

来源：

LNLA: 2009 INTERNATIONAL WORKSHOP ON LOCAL AND NON-LOCAL APPROXIMATION IN IMAGE PROCESSING | 2009年

关键词：

D O I：

10.1109/LNLA.2009.5278398

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

We present a novel method to compute the Normalized Cross-Correlation (NCC) of spherical signals such as omnidirectional images for the purpose of image alignment, i.e. orientation estimation, or template tracking. Expanding the reference image and the search template in the spherical harmonics basis, we use the Fourier representation of SO(3) as introduced by Kostelec and Rockmore. We show that the normalized version of the cross-correlation function with regard to orientation can be expressed in terms of standard correlation terms and the NCC can therefore be computed efficiently in O (N-3 log(2) (N)). The approach is validated with experiments on real image sequences in a template matching application.

引用

页码：82 / +

页数：3

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