Affiliation:
1. Beijing Institute of Technology
2. Beijing Key Laboratory of Fractional Signals and Systems
3. Beijing Information Science & Technology University
Abstract
Newton’s ring pattern is very common in interferometry. By analyzing it, the physical parameters can be estimated, such as the curvature radius and the rings’ center. However, parameter estimation from large images using fractional Fourier transform (FRFT) consumes considerable time. A concise FRFT based on a non-uniform order searching method is proposed to reduce the computational time without decreasing the accuracy. Experimental results show that the time of the proposed method is about 2.7 s, which is about 1/600 of that of the traditional FRFT-based method and 1/5 of that of the Fast FRFT-based method when processing
960
×
960
pixel images.
Funder
Beijing Municipal Natural Science Foundation
National Natural Science Foundation of China
The Foundation for Basic Research of Beijing Information Science Technology University
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering
Cited by
4 articles.
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