Estimation of image magnification using phase correlation

被引：4
|
作者：
Raj, A. N. Joseph [1 ]
Staunton, R. C. [1 ]
机构：
[1] Univ Warwick, Coventry CV4 7AL, W Midlands, England
来源：
ICCIMA 2007: INTERNATIONAL CONFERENCE ON COMPUTATIONAL INTELLIGENCE AND MULTIMEDIA APPLICATIONS, VOL III, PROCEEDINGS | 2007年
关键词：
D O I：
10.1109/ICCIMA.2007.222
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
A new method to determine the magnification change between near and far focused images is presented. For a non-central image sub-block the magnification can be determined by considering the translation of the block. In practice the central sub-block was used to measure the overall translation and non-central sub-blocks provide a map of magnification at different points within an image. The method employs Phase Correlation. Experimental results with simulated and real images show the method works effectively even for defocused images.
引用
收藏
页码：490 / 494
页数：5
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