A Partitioning Method for 3D Reconstruction of Oblique Images in Large Scenes

Abstract

The invention discloses a large-scene inclined image three-dimensional reconstruction zone partitioning method, and relates to the technical field of surveying and mapping photography. The method comprises the following steps of (1) after an inclined photo requiring the zone partitioning is input, performing software measurement to obtain the position, the posture and the ground coordinates X, Y and Z of each connecting point of each image during the photo taking by a camera. The method disclosed by the invention has the advantages that the design is novel; the method is strict; the large-region image is reconstructed after the zone partitioning; the time and the energy consumption can be effectively saved; the work efficiency is improved; the problem of great time and resource waste of one-step reconstruction due to too great data volume of the large-region image can be solved; in addition, since the internal memory of a computer is limited, the computer freeze or system halting can be caused by too great data during the operation; through the zone partitioning operation by aerotriangulation software, the reasonable zone partitioning can be ensured when the model precision is ensured; the model data completeness is ensured; and the problem of model holes caused by photo taking image absence due to insufficient zone partitioning precision can be solved.

Description

technical field [0001] The invention relates to the technical field of surveying, mapping and photography, in particular to a partitioning method for three-dimensional reconstruction of oblique images of large scenes. Background technique [0002] Surveying and mapping technology is changing with each passing day, and various professional geographic information systems have been established one after another. The traditional surveying and mapping industry is transforming into a modern geographic information industry. Modern surveying and mapping produces digital geographic information through information technology and automation. The service areas of surveying and mapping work are greatly expanded. Not only for all It can provide guarantee for the construction of various projects, and can use rich geographic information resources to promote the development of environmental protection work and make a huge contribution to the sustainable development of society. [0003] With ...

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Problems solved by technology

[0003] With the continuous development of remote sensing technology, the surveying and mapping industry will surely develop rapidly. With the combination of modern surveying and mapping instrument technology and the actual work of surveying, the living space and business scope of surveying will be broadened, and the foundation for the establishment of resource and environmental information systems will be provided. Data; collecting, storing, processing, displaying and utilizing surface and underground space, resources and environmental information; effectively developing resources, protecting resources, serving the protection and governance of the environment, and serving the sustainable development of society. However, computer memory Limited, a large amount of image data in large areas, time-consuming and resource-intensive reconstruction, and easy to cause computer freezes and crashes, so it is necessary to build and merge partitions, but unreasonable partitions can easily lead to insufficient model accuracy and missing photographic images , it is not convenient for the reconstruction of oblique images in large areas

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