Robust Evaluation of Reference Tilt in Digital Holography
Source abstract
Abstract
A robust approach is designed to evaluate the reference tilt angle (RTA) accurately and efficiently by local Gaussian fitting (LGF) for the distribution of one frequency peak on a spatial spectrum plane (SSP). The novel method proposed can avoid enlarging the data array on either a hologram or an SSP and then alleviate the computing burden on information processing hardware. Moreover, the RTA precision can be improved by one order of the magnitude in certain ranges, which benefits not only the accurate image recovery in an off-axis digital holography (DH) display but also the thorough removal of the tilt error effect on the image quality in phase-shifting digital holography (PSDH). The error source of the frequency peak position is analyzed theoretically and the principle with detailed steps is described. Several cases of numerical simulations have been carried out to demonstrate the availability and accuracy of this robust RTA evaluation method.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Digital Holography and Microscopy · Optical measurement and interference techniques · Advanced Vision and Imaging
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Science, China University of Petroleum (East China), Qingdao 266580, China
School of Ocean and Space Information, China University of Petroleum (East China), Qingdao 266580, China
Funding
Natural Science Foundation of Shandong Province, China · Fundamental Research Funds for the Central Universities of China
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