Global optimization-based three-dimensional model synthesis method

Abstract

The invention relates to a model synthesis method, in particular to a global optimization-based three-dimensional model synthesis method, which utilizes the structural information of a three-dimensional model sample and a global optimization algorithm to synthesize various target three-dimensional models similar to the initial model. The method first utilizes a model structure analysis method to split the three-dimensional model sample and obtain the class number of each spatial block, then establishes a global model synthesis energy equation on the basis of the constraint relation between the class numbers obtained from the three-dimensional model sample, and adopts an expectation maximization algorithm for iterative optimization to work out a global energy minimum, and the final result is a synthesized model. The method can effectively keep the continuity of target three-dimensional model structures and the integrity of the visual effect.

Description

technical field [0001] The invention relates to the technical fields of computer image processing and computer graphics, in particular to a three-dimensional model synthesis method based on global optimization. Background technique [0002] As a new generation of digital media, digital geometric models have been widely used in many fields such as industrial manufacturing, digital entertainment, biomedicine, and digital cultural heritage protection. With the emergence of a large number of shareable digital geometric models, how to realize the effective reuse of existing model resources has become one of the important issues faced by this field. 3D model retrieval technology is the basis of resource reuse, but it only supports the problem of model acquisition from a large number of resources, and cannot really support model reuse. The instance modeling technology combines digital geometry processing technologies such as model feature analysis, model retrieval and grid editing...

AI Technical Summary

Problems solved by technology

3D model retrieval technology is the basis for resource reuse, but it only supports the problem of model acquisition from a large number of resources, and cannot really support model reuse

However, this type of method still faces two major problems: how to establish an effective model representation mechanism to describe the structural unit feature constraints of the model and its construction process, and how to determine the appropriate structural variation mechanism to improve the deformation ability of the model and then support the user's interactive control

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