Three-dimensional model generating method and apparatus, and electronic device

A three-dimensional model generating apparatus, comprising:

• a feature extraction module, configured to perform feature extraction on an aerial three-dimensional model and a ground three-dimensional model of a to-be-modeled object respectively to obtain at least three sets of feature vectors;
• a registration module, configured to perform registration on the aerial three-dimensional model and the ground three-dimensional model based on the feature vectors, and determine a first transition area of a fused three-dimensional model;
• a reconstruction module, configured to reconstruct a triangular patch of the first transition area to obtain a second transition area;
• and
• a filling module, configured to perform texture filling on the second transition area, and determine a target three-dimensional model of the to-be-modeled object;
• wherein the registration module performs geometric transformation on the aerial three-dimensional model and/or the ground three-dimensional model based on the feature vectors to achieve primary registration;
• and
• performs secondary registration on the three-dimensional model subjected to the primary registration based on an iterative closest point algorithm.