{"title":"Ray-resampling geometric distortion correction for imaging systems.","authors":"Ziwei Wang, Xiaoying Peng, Yupei Miao, Shaolei Xu, Xiaojie Zhang, Qijian Tang, Xiaoli Liu","doi":"10.1364/OL.614269","DOIUrl":null,"url":null,"abstract":"<p><p>This Letter presents a ray-resampling method for direct geometric distortion correction based on densely calibrated pixel-to-ray mappings. Instead of relying on system-specific distortion models, calibrated rays are intersected with an object-space reference plane and resampled onto a regular grid, allowing the same correction workflow to accommodate substantially different imaging geometries. The method is further extended to light-field imaging through sub-aperture ray reconstruction and resampling. Experiments on wide-angle, fisheye, and non-central catadioptric systems achieve overall linearity errors of 0.0202, 0.0337, and 0.0557 px, respectively. In structured light-field 3D reconstruction, the standard deviation of plane-fitting error decreases from 1.8386 mm to 0.1709 mm, demonstrating accurate geometric correction and improved downstream 3D measurement.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"51 20","pages":"5669-5672"},"PeriodicalIF":3.3000,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OL.614269","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/9/17 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
This Letter presents a ray-resampling method for direct geometric distortion correction based on densely calibrated pixel-to-ray mappings. Instead of relying on system-specific distortion models, calibrated rays are intersected with an object-space reference plane and resampled onto a regular grid, allowing the same correction workflow to accommodate substantially different imaging geometries. The method is further extended to light-field imaging through sub-aperture ray reconstruction and resampling. Experiments on wide-angle, fisheye, and non-central catadioptric systems achieve overall linearity errors of 0.0202, 0.0337, and 0.0557 px, respectively. In structured light-field 3D reconstruction, the standard deviation of plane-fitting error decreases from 1.8386 mm to 0.1709 mm, demonstrating accurate geometric correction and improved downstream 3D measurement.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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