Three-dimensional model processing method and device and storage medium

Abstract

The invention discloses a three-dimensional model processing method and device, and a storage medium. The method comprises the steps of obtaining a target object three-dimensional model and a reference three-dimensional model; searching a target point which is closest to the vertex in the reference three-dimensional model in the target object three-dimensional model to obtain a first closest pointpair set; determining a normal direction corresponding to a target point in the nearest point pair and a nearest point pair direction between each nearest point pair in the first nearest point pair set, wherein the nearest point pair direction faces the target point; taking the nearest point pair corresponding to the condition that the angle between the nearest point pair direction and the normaldirection is less than or equal to a preset angle threshold as a second nearest point pair set; determining an updated reference three-dimensional model according to the second nearest point pair setand a point-to-surface constraint formula; performing iterative optimization based on the updated reference three-dimensional model until a preset convergence condition is reached; determining a target optimal solution of a point-to-surface constraint formula when a preset convergence condition is reached; and obtaining a target three-dimensional model matched with the target object three-dimensional model.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a three-dimensional model processing method, device and storage medium. Background technique [0002] With the continuous advancement of computer technology, the processing technology of 3D models is becoming more and more mature, including the reconstruction and deformation of 3D models, which are widely used in various industries, such as face modeling, face recognition, animation and movie special effects production and other fields. [0003] The process of 3D model processing usually involves technical content such as nearest point search and constraint condition selection. The technical solutions adopted by the existing technology often have problems such as early matching, premature convergence or inaccurate matching in the above process, resulting in the obtained 3D model. The model is deformed, details are not obvious, and local defects, such as Figure 7 shown...

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Problems solved by technology

[0003] The process of 3D model processing usually involves technical content such as nearest point search and constraint condition selection. The technical solutions adopted by the existing technology often have problems such as early matching, premature convergence or inaccurate matching in the above process, resulting in the obtained 3D model. The model is deformed, details are not obvious, and local defects, such as Figure 7 as shown in a

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