Quick three-dimensional virtual scene constructing method

Abstract

The invention provides an interactive semi-automatic three-dimensional scene constructing method. A data distributed storage strategy of the method is that scene data such as ground object models, vegetation, landform and the like is stored in a block mode through constructing scene data indexes, and relevant data is loaded by efficient data scheduling, thereby realizing dynamic construction of the scene. A land surface feature extraction method is that automatic acquisition for land surface texture, vegetation and water distribution areas in the scene is realized through performing operations of texture sampling, feature extraction and image segmentation on remote sensing images. A ground object feature extraction method is that positions and attributes of linear ground objects such as rivers, roads, bridges and the like and point-like ground objects are extracted through analyzing geographic information vector data, thereby realizing automatic acquisition for the attributes such as geometric dimensions, space positions and the like of the ground object models in the virtual scene. Therefore, the method provided by the invention can be applicable to quick scene construction with different scales and different complexity degrees, and can obviously improve the construction efficiency of the virtual scene.

Description

technical field [0001] The invention belongs to the field of three-dimensional virtual scene modeling, in particular to three-dimensional reconstruction of real scenes such as virtual battlefield scenes. Background technique [0002] The construction of 3D virtual scene is the basis of virtual reality technology, and it plays an important role in interactive applications such as game design, digital city, virtual roaming, virtual display and simulation training. The construction of 3D virtual scene includes two parts: 3D model reconstruction and scene reconstruction. The 3D model reconstruction is the modeling and modeling of various objects in the scene. The scene reconstruction is based on the reconstruction of the 3D model according to certain rules. and the definition of constraints. The reconstruction technology of 3D model is very mature at present, and the commonly used methods mainly include survey modeling and CAD modeling software modeling. The model constructed b...

AI Technical Summary

Problems solved by technology

For the construction of large-scale and complex scenes, although the manual construction method can be realized, the construction efficiency is low, the development cycle is long, and the cost is high; the computer automatic reconstruction method cannot reconstruct the details, and the constructed scene cannot meet the user's requirements for scene fidelity. requirements

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