Method and device for reconstructing three-dimensional model from three views, equipment and storage medium

Abstract

The invention discloses a method and device for reconstructing a three-dimensional model from three views, equipment and a storage medium. The method comprises the following steps: acquiring a back projection of each two-dimensional edge in each view in a three-dimensional space; according to the back projection of each two-dimensional edge in each view in the three-dimensional space, three-dimensional candidate edges constructed by all points where the back projections of the three different views intersect are obtained; according to three-dimensional candidate edges constructed by all points where back projections of the three different views intersect, obtaining a ring of an actual surface formed by constructing the candidate edges through a deep neural network; and according to the ring of the actual surface formed by constructing the candidate edges through the deep neural network, obtaining a three-dimensional model obtained by fitting a parameterized model of the ring of the actual surface. According to the method, the problem of reconstructing the three-dimensional model from the three views in the CAD can be solved simply and efficiently, the limitation on the geometric shape type is avoided when the topological information of the object is recovered, and the application range is wider.

Description

technical field [0001] The present disclosure generally relates to the technical field of model construction, and in particular, to a method, apparatus, device and storage medium for reconstructing a three-dimensional model from three views. Background technique [0002] Reconstructing 3D objects from three orthogonally projected views is a long-standing problem in the field of computer-aided design. A successful solution to this problem allows users to easily create 3D object models by drawing sketches on a 2D interactive interface. [0003] In the prior art, orthographic projection is the most commonly used method in the construction of 3D models. 3D edges, 3D faces, and solids, then reproject these candidates onto each view to check for a match. The disadvantage of this method is that the types of objects are limited to some common types of surfaces, including planes and finite quadric surfaces, such as cylinders, spheres, and torus, when complex objects appear, such as...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the types of objects are limited to some common types of surfaces, including planes and limited quadratic surfaces, such as cylinders, spheres and torus. When complex objects appear, such as two intersecting quadratic When high-order curves or B-splines formed by subsurfaces, the search cost becomes extremely high. In addition, the process of searching all valid faces, especially curved surfaces, is very complicated, and each step often requires multiple reprojections to check the necessary Conditions; due to the ambiguity of intermediate steps, backtracking and heuristic methods may also be adopted, resulting in complex processes and low efficiency

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