2023
DOI: 10.1111/phor.12453
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Learning‐based encoded target detection on iteratively orthorectified images for accurate fisheye calibration

Abstract: Fisheye camera calibration is an essential task in photogrammetry. However, previous calibration patterns and the robustness of the adjoint processing methods are limited due to the fisheye distortion and various lighting. This problem leads to additional manual intervention in the data collection. Moreover, it is arduous to accurately detect the board target under fisheye's distortion. To increase the robustness in this task, we present a novel encoded board “Meta‐Board” and a learning‐based target detection … Show more

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