Automatic alignment methods, systems, and electronic devices for 3D battlefield target models

Abstract

This application discloses an automatic alignment method, system, and electronic device for 3D battlefield target models, relating to the fields of computer graphics and 3D model processing technology. The method includes: preprocessing the input 3D battlefield target model to be corrected; calculating the bounding box alignment and normalizing the model's geometric center to the origin; generating a six-sided orthogonal projection rendering image of the bounding box; constructing a multimodal large model input by combining the six-sided rendering image with structured text prompts; identifying the bounding box orientation plane through independent semantic reasoning combined with a majority voting mechanism; extracting the corresponding directed normal vectors; and constructing a three-axis orthogonal semantic local coordinate system; using the semantic local coordinate system as the source coordinate system and a predefined target world coordinate system as the target, constructing a rigid body rotation matrix and applying it to all geometric data of the 3D model to complete the fully automatic correction and alignment output of the coordinate axis orientation. This achieves high-precision, fully automatic semantic-driven normalization of the 3D model's coordinate axis orientation.

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