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《Opto-Electronic Engineering》 2007-12
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New path-following phase unwrapping algorithm based on quality-guided

LIU Jing-feng1,2,LI Yan-qiu1,LIU Ke1,2 ( 1. Institute of Electrical Engineering, the Chinese Academy of Sciences, Beijing 100083, China; 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China )  
The principle of the path-following phase unwrapping method is introduced briefly. In order to overcome the shortcomings in processing wrapped-phase containing phase jumps, a path-following phase unwrapping method based on a new quality-guided is proposed. The algorithm uses a quality map, which is an array of values to define the quality or goodness of each pixel of the given phase image, and unwraps the highest-quality pixels first and the lowest-quality pixels last to prevent error propagation. Unavoidable errors caused by unreliable phase data are confined to minimum area, and the integration path follows the high-quality pixels and avoids the low-quality pixels. Computer simulation shows that the proposed algorithm works successfully when complicated discontinuities exist in wrapped phase images.
【Fund】: 863IC装备专项;; 973计划项目(2003CB716204)
【CateGory Index】: TP274
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Chinese Journal Full-text Database 2 Hits
1 Li Yanqiu Liu Ke(Key Laboratory of Photoelectronic Imaging Technology and System,Ministry of Education,School of Optoelectronics,Beijing Institute of Technology,Beijing 100081,China);Core Techniques of Phase-Shifting Point Diffraction Interferometer[J];Laser & Optoelectronics Progress;2010-01
2 HUANG Bai-sheng,XU Jia-dong (Nanjing Research Institute of Electronics Technology,Nanjing 210039,China);Fast Phase Unwrapping Method for Interferometric Phase Based on New Quality-Guided[J];Journal of System Simulation;2010-02
Chinese Journal Full-text Database 4 Hits
1 LIU Jing-feng1,3,LI Yan-qiu1,2,LIU Ke1,3(1.Institute of Electrical Engineering,CAS,Beijing 100080,China)(2.Beijing Institute of Technology,Beijing 100081,China)(3.Graduate University of Chinese Academy of Sciences,Beijing 100049,China);Weighted least-square phase unwrapping algorithm for noisy phase-map[J];Optical Technique;2008-05
2 Yang Xia Yu Qi-feng Fu Si-hua (College of Aerospace and Material Technology,NUDT,Changsha 410073,China);A Fast Phase Unwrapping Method Guided by New Quality Map for InSAR[J];Journal of Electronics & Information Technology;2007-10
3 LIU Ke1,3, LI Yan-qiu1,2, LIU Jing-feng1,3 (1.Institute of Electrical Engineering, Chinese Academy of Sciences,Beijing,100083, China;2.Beijing Institute of Technology, Beijing 100081, China; 3.Graduate University of Chinese Academy of Sciences,Beijing 100039, China);Wavefront fitting method for annular interferogram with obscurations[J];Infrared and Laser Engineering;2008-S2
4 Liu Jingfeng1,2,Li Yanqiu1,Liu Ke1,2(1 Institute of Electrical Engineering,Chinese Academy of Sciences(Bei er tiao 6,zhong guan cun,Beijing 100083,China;2 Graduate school of the Chinese Academy of Sciences,Beijng 100049,China);Technical problems in phase-shifting point diffraction interferometer[J];Chinese Journal of Scientific Instrument;2007-S1
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