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Wand-Based Calibration of Unsynchronized Multiple Cameras for 3D Localization
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Wand-Based Calibration of Unsynchronized Multiple Cameras for 3D Localization
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Journal Article
Wand-Based Calibration of Unsynchronized Multiple Cameras for 3D Localization
2024
Overview
Three-dimensional (3D) localization plays an important role in visual sensor networks. However, the frame rate and flexibility of the existing vision-based localization systems are limited by using synchronized multiple cameras. For such a purpose, this paper focuses on developing an indoor 3D localization system based on unsynchronized multiple cameras. First of all, we propose a calibration method for unsynchronized perspective/fish-eye cameras based on timestamp matching and pixel fitting by using a wand under general motions. With the multi-camera calibration result, we then designed a localization method for the unsynchronized multi-camera system based on the extended Kalman filter (EKF). Finally, extensive experiments were conducted to demonstrate the effectiveness of the established 3D localization system. The obtained results provided valuable insights into the camera calibration and 3D localization of unsynchronized multiple cameras in visual sensor networks.
Publisher
MDPI AG,MDPI
Subject
