Geometric coordinate correction application analysis of oblique photography 3D model data.
In recent years, oblique photography technology has been widely used in 3D data acquisition equipment. Oblique photography technology uses multiple sensors on the flight platform to collect images from different angles, and compared with traditional photogrammetry, oblique photography technology can obtain more information such as side textures.
Geometric coordinate correction of oblique photography 3D model data is important for cartography, building surveying, and municipal infrastructure management. Through geometric coordinate correction, the precision and accuracy of map mapping can be improved to conform to the geographical standards of a country or region. In building surveying, geometric coordinate correction can provide more accurate information such as building height, route paths, etc., which can help designers and builders better understand the structure of a building or space. In municipal infrastructure management, geometric coordinate correction can improve the precision and accuracy of urban geographic information systems (GIS), so as to better manage urban infrastructure.
Methods for geometric coordinate correction typically include the following steps: obtaining control points, registering with the original model, error analysis and adjustment, and accuracy evaluation. The real-world coordinates of some obvious feature points in the site are obtained as control points through GPS or other measurement methods, and then the original 3D model of oblique photography is registered with the real-world coordinate system using control points. According to the results after registration, the difference between the original 3D model and the control points is compared, and the error is calculated and adjusted to obtain a more accurate 3D model. Finally, the quality of the adjusted 3D model is evaluated to determine whether its geometric accuracy meets the requirements.
In addition to geometric coordinate correction, elevation correction can also be achieved through post-geometric correction of the 3D model. This improves the accuracy and reliability of the data, making it more suitable for fields such as engineering and scientific research. In practice, different methods can be used to make elevation corrections, such as 3D model data coordinate encryption, coordinate transformation, and elevation modification.
In the geometric coordinate correction of oblique photography 3D model data, some fast and efficient processing tool software, such as 3D factory k3dmaker, can also be used. The software has the functions of browsing, analysis, geometric correction, lightweight, top-level merge construction, format conversion, color grading and cropping, etc., which can help to correct or correct the geometric coordinates of 3D model data.
In conclusion, the geometric coordinate correction application analysis of oblique photography 3D model data includes map mapping, building surveying, and municipal infrastructure management. Through methods such as geometric coordinate correction and elevation correction, the accuracy and reliability of the data can be improved, making it more suitable for various application fields. At the same time, with the help of fast and efficient processing tool software, the work of geometric coordinate correction can be completed efficiently.
Introduction to 3D factory software:
3D Factory K3dmaker is a professional processing software for 3D model browsing, analysis, lightweight, top-level merge construction, root node merging, geometric correction (correction), format conversion, color grading and cutting, coordinate conversion and other functions developed by the domestic team. It can carry out mesh simplification, texture compression, hierarchical optimization and other operations of the 3D model, so as to realize the lightweight of the 3D model. The lightweight compression ratio is large, the model lightweight efficiency is high, and the automatic processing capacity is high. A variety of algorithms are used to correct the geometric precision of the 3D model, with high precision, fast processing speed and support for large models. Excellent data processing and conversion tools, supporting the conversion of OSGB format 3D models to 3DTILES and other formats, which can be quickly converted. The advantage is that it is free, powerful, supports a variety of file formats, and is suitable for a variety of fields. Cooperate with common 3D reconstruction software to optimize the 3D model, improve the quality of the model, and enrich the data results. Give it a try!