Light field Laparoscope imaging model and calibration method based on flexible aperture-angular plane

IF 3.5 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering Pub Date : 2024-11-05 DOI:10.1016/j.optlaseng.2024.108676

引用次数: 0

Abstract

With rapid developments in light field imaging, a great deal of attention has been given to its applications in industrial, medical and other fields due to its ability to perform three-dimensional reconstruction in single-shot. In these applications, Light field Laparoscope (LFL) is an important one, but it often suffers severe micro-lens image deformations that lead to incorrect LFL decoding, calibration and three-dimensional reconstruction. Based on the micro-lens image non-deformation constraint presented by us before, we propose the flexible aperture-angular plane to analyze the LFL imaging model, the modified microlens image non-deformation constraint for 3D LFL system and an advanced two-step calibration method to compute 3D LFL imaging parameters. Moreover, a 3D LFL imaging prototype is designed and calibrated. Experimental results show that microlens image deformations are avoided in this 3D LFL prototype, and the typical RMS re-projection error is about 0.06 pixels.

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基于柔性光圈-角平面的光场腹腔镜成像模型和校准方法

随着光场成像技术的飞速发展，其在工业、医疗和其他领域的应用也受到了广泛关注，因为它能够在一次拍摄中完成三维重建。在这些应用中，光场腹腔镜（LFL）是重要的一种，但它经常会出现严重的微透镜图像变形，导致 LFL 解码、校准和三维重建不正确。我们在之前提出的微透镜图像不变形约束的基础上，提出了分析 LFL 成像模型的柔性孔径-角平面、用于三维 LFL 系统的修正的微透镜图像不变形约束以及计算三维 LFL 成像参数的先进的两步校准方法。此外，还设计并校准了三维 LFL 成像原型。实验结果表明，该三维 LFL 原型可避免微透镜图像变形，典型的均方根再投影误差约为 0.06 像素。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics and Lasers in Engineering 工程技术-光学

CiteScore

8.90

自引率

8.70%

发文量

384

审稿时长

42 days

期刊介绍： Optics and Lasers in Engineering aims at providing an international forum for the interchange of information on the development of optical techniques and laser technology in engineering. Emphasis is placed on contributions targeted at the practical use of methods and devices, the development and enhancement of solutions and new theoretical concepts for experimental methods. Optics and Lasers in Engineering reflects the main areas in which optical methods are being used and developed for an engineering environment. Manuscripts should offer clear evidence of novelty and significance. Papers focusing on parameter optimization or computational issues are not suitable. Similarly, papers focussed on an application rather than the optical method fall outside the journal''s scope. The scope of the journal is defined to include the following: -Optical Metrology- Optical Methods for 3D visualization and virtual engineering- Optical Techniques for Microsystems- Imaging, Microscopy and Adaptive Optics- Computational Imaging- Laser methods in manufacturing- Integrated optical and photonic sensors- Optics and Photonics in Life Science- Hyperspectral and spectroscopic methods- Infrared and Terahertz techniques