【摘 要】
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Aperture synthesis is an important approach to improve the lateral resolution of digital holography[DH]techniques.The limitation of the accuracy of registration positions between sub-holograms affects the quality of the synthesized image and even causes t
【机 构】
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Department of Instrument and Science in Engineering,School of Electronic Information and Electrical
论文部分内容阅读
Aperture synthesis is an important approach to improve the lateral resolution of digital holography[DH]techniques.The limitation of the accuracy of registration positions between sub-holograms affects the quality of the synthesized image and even causes the failure of aperture synthesis.It is a major issue in aperture synthesis of DH.Currently intensity images are utilized to find the registration positions of sub-holograms in aperture synthesis.To improve the accuracy of registration positions,we proposed a method based on similarity calculations of the phase images between sub-holograms instead of intensity images.Furthermore,a quantitative indicator,degree of image distortion,was applied to evaluate the synthetic results.Experiments are performed and the results verify that the proposed phase-image-based method is better than the state-of-the-art intensity-image-based techniques in the estimation of registration positions and provides a better synthesized final three-dimensional shape image.
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