Highly accurate geometric precision and dense image features characterize True Digital Orthophoto Maps (TDOMs), which are in great demand for applications such as urban planning, infrastructure management, and environmentalthis http URLTDOM generation methods need sophisticated processes, such as Digital Surface Models (DSM) and occlusion detection, which are computationally expensive and prone tothis http URLwork presents an alternative technique rooted in 2D Gaussian Splatting (2DGS), free of explicit DSM and occlusion detection. With depth map generation, spatial information for every pixel within the TDOM is retrieved and can reconstruct the scene with high precision. Divide-and-conquer strategy achieves excellent GS training and rendering with high-resolution TDOMs at a lower resource cost, which preserves higher quality of rendering on complex terrain and thin structure without a decrease in efficiency. Experimental results demonstrate the efficiency of large-scale scene reconstruction and high-precision terrain modeling. This approach provides accurate spatial data, which assists users in better planning and decision-making based on maps.
View on arXiv@article{wang2025_2503.19703,
title={ High-Quality Spatial Reconstruction and Orthoimage Generation Using Efficient 2D Gaussian Splatting },
author={ Qian Wang and Zhihao Zhan and Jialei He and Zhituo Tu and Xiang Zhu and Jie Yuan },
journal={arXiv preprint arXiv:2503.19703},
year={ 2025 }
}