Editorial on Special Issue "Techniques and Applications of UAV-Based Photogrammetric 3D Mapping".

In the last decade, unmanned aerial vehicle (UAV) images have become one of the most critical remote sensing data sources because of the high flexibility of UAV platforms and the extensive usage of low-cost cameras. For robust and accurate image orientation, Huang et al. [[2]] proposed a camera self-calibration solution for long-corridor UAV images, such as transmission lines. 10.3390/rs13163247 2 Huang W., Jiang S., Jiang W. Camera Self-Calibration with GNSS Constrained Bundle Adjustment for Weakly Structured Long Corridor UAV Images. [Extracted from the article]