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| 基于多相机的超大视角成像技术的研究 |
| Multi-camera based large angle-of-view imaging technique |
| 投稿时间：2024-04-07 |
| DOI：10.3969/j.issn.1005-5630.202404070067 |
| 中文关键词: 多相机成像 大视场 内窥镜 |
| 英文关键词:multi-camera imaging large field of view endoscope |
| 基金项目:国家重点研发计划（2020YFF01014503） |
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| 中文摘要: |
| 内窥镜是一种用于对狭小空间进行成像的重要设备。然而，内窥镜受视场角较小的局限，通常难以对空间中的侧面场景进行成像。提出了一种基于多相机的超大视角成像技术。首先，提出并建立了多相机超大视角成像技术的理论模型，并利用该模型分析了多相机超大视角成像系统的结构与视场角的关系。然后，通过对理论模型中各参数因子对最终成像效果的分析，采用理论推导，并通过实验数据对模型参数进行校正，研制出一款由4个微型相机组成的直径为5.8 mm的多相机的超大视角成像系统。该成像技术采用LED为狭窄空间提供照明，并能够以超过180°的大视角对狭窄空间进行成像。同时，该技术通过成像系统获取的4幅图像进行图像拼接，实现超大视场的多相机成像及全景图像自动生成功能。基于多相机的超大视角成像技术将会为外科手术、工业检查和监控等需要大视场、全景成像的领域提供更优质的解决方案。 |
| 英文摘要: |
| Endoscopes are essential imaging devices that can access to narrow space for examination. However, the endoscope usually has a small angle of view and cannot observe the objects on the sides. In this paper, we proposed a multi-camera based large angle-of-view imaging technique. We derived a theoretical model for the large angle-of-view imaging technology based on multi-camera to analyze the relation between the structure and the angle of view. Then, by analyzing the impact of each parameter factor in the theoretical model on the final imaging effect, using theoretical derivation, and correcting the model parameters through experimental data, a multi-camera large angle-of-view imaging system with a diameter of 5.8 mm consisting of four micro cameras was developed. The LED of the imaging technique can illumine the surroundings and detect the images with a wide angle of view exceeding 180o. At the same time, this technology realizes multi-camera imaging with a large field-of-view and automatic generation of panoramic images by image stitching through four images captured by the imaging system. We believe that large view-of-angle imaging technology based on multi-camera will provide better solutions for various fields such as surgery, industrial inspection and monitoring that require large field-of-view and panoramic imaging. |
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