外推法
插值(计算机图形学)
全息术
克罗内克三角洲
算法
光学
计算机科学
计算
图像缩放
分辨率(逻辑)
数学
计算机视觉
人工智能
图像(数学)
图像处理
物理
数学分析
量子力学
作者
Jieming Zhao,Zhan Gao,Yuhao Niu,Lin Deng
出处
期刊:Measurement
[Elsevier]
日期:2022-08-01
卷期号:199: 111531-111531
被引量:1
标识
DOI:10.1016/j.measurement.2022.111531
摘要
A method for improving the resolution of single-frame off-axis holograms based on extrapolation iteration and Kronecker interpolation is proposed to address the problem of low resolution of image sensors in digital holographic systems. Low-frequency information in the image is increased and the zero-order image is suppressed by the numerical computation in the frequency domain using the Kronecker interpolation method. High-frequency information outside the received plane is calculated using an extrapolation iterative algorithm. The obtained low-frequency and high-frequency information are then combined to improve the resolution of off-axis holography. Compared to conventional reconstruction methods, the proposed method eliminates the need to add complex optical elements to the optical path, greatly simplifying the optical system when increasing resolution. Simulation and optical experimental results demonstrate the feasibility of the proposed method.
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