Octa-Log-Polar Fourier Transform for Image Registration

被引：3
|
作者：
Wu, Xian-xiang [1 ]
Guo, Bao-long [1 ]
Wang, Juan [2 ]
机构：
[1] Xidian Univ, Inst Intelligent Control & Image Engn, Xian 710071, Peoples R China
[2] Air Force Engn Univ, Telecommun Engn Inst, Xian 710077, Peoples R China
来源：
FIFTH INTERNATIONAL CONFERENCE ON INFORMATION ASSURANCE AND SECURITY, VOL 1, PROCEEDINGS | 2009年
关键词：
image registration; octa-log-polar Fourier transform; phase correlation;
D O I：
10.1109/IAS.2009.285
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
A novel image registration algorithm based on octa-log-polar Fourier transform (OLPFT) for estimating large translations, rotations. and scalings in images is presented. The OLPFT, which is calculated at points distributed at non-linear increased concentric octagons, approximated log-polar Fourier representations of images accurately. And it can he calculated fast by utilizing the Fourier separability property and fractional FFT. Using the log-polar Fourier representations and cross-power spectrum method, we can estimate the rotations and scalings in images, and obtain translations later.
引用
收藏
页码：601 / +
页数：2
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