In this paper, a novel approach is proposed to calibrate an underwater fisheye camera with the multi-frequency heterodyne technique based on the light field. First, an underwater fisheye camera imaging model based on the light field is established to demonstrate the multiple refractions of light in underwater propagation and the extraordinary imaging characteristics of the fisheye lens, which shows better conciseness and organization. Then, the calibration method applied in the underwater fisheye camera imaging system is proposed to determine the mapping of the light field and the pose of the underwater fisheye camera. The light field mapping of the fisheye lens is obtained with the assistance of the multi-frequency heterodyne technique. Finally, an underwater fisheye camera is developed and the experimental results are obtained to validate the correctness and feasibility of the proposed method. Our underwater imaging system proves capable of achieving higher accuracy in the con...

中文翻译：

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基于光场的多频外差技术校准水下鱼眼镜头

本文提出了一种基于光场的多频外差技术校准水下鱼眼镜头的新方法。首先，建立了基于光场的水下鱼眼镜头成像模型，以演示光在水下传播时的多次折射以及鱼眼镜头非凡的成像特性，从而显示出更好的简洁性和组织性。然后，提出了在水下鱼眼镜头成像系统中应用的校准方法，以确定水下鱼眼镜头的光场和姿态的映射。鱼眼镜头的光场图是借助多频外差技术获得的。最后，开发了水下鱼眼镜头，并获得了实验结果，验证了该方法的正确性和可行性。我们的水下成像系统被证明能够在水中获得更高的精度。