Automatic modeling method and system combining aerial oblique photography with video data

Abstract

The invention provides an automatic modeling method and system combining aerial oblique photography with video data. The system comprises an oblique photography device, a photography image data file generation module, a video shooting device, GPS equipment and an analysis center. The analysis center comprises a shot image data file generation module, a shot image positioning module, a shot image positioning module, a matching module, an aerial triangulation measurement module and a three-dimensional inclination model generation module. The system has the advantages that the oblique photographyimages and the synchronously acquired video data are associated and effectively fused, and the video data are always clear, so that the problem of fuzzy sections close to the ground does not exist, the problem of bottom distortion of the three-dimensional model can be effectively improved through the video data, and the authenticity degree of the three-dimensional model is improved. Besides, through the fusion of the video data and the oblique photography images, the workload of manual repair is reduced, so that the operation efficiency of the three-dimensional model is improved.

Description

technical field [0001] The invention belongs to the technical field of photogrammetry, and in particular relates to an automatic modeling method and system combining video data through aerial oblique photography. Background technique [0002] Since the 21st century, low-altitude aircraft have developed rapidly. The aerial photography technology based on this is becoming more and more mature. At the same time, with the application of 3D technology, extracting building models plays an important role. Existing technologies for extracting building models include oblique photography technology, Lidar technology and artificial methods based on modeling software. However, the above methods mainly have the following shortcomings: [0003] In the oblique photography technology, due to the specific angle between different sensors and the ground during photography, the resolution of the captured image is lower near the ground than on the far ground, so that the acquired model has a bl...

AI Technical Summary

Problems solved by technology

[0003] Oblique photography technology, due to the specific angles between different sensors and the ground when taking pictures, the resolution near the ground is higher than that of the far ground in the captured image, which makes the acquired model blurred and distorted near the ground

Due to its own characteristics, Lidar technology cannot accurately obtain the side texture features of ground objects, and requires a separate sensor to provide color, which results in a large amount of collected data and low efficiency.

Manual modeling based on modeling software is a labor-intensive task, with low work efficiency, high labor costs, and low model authenticity

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