A three-dimensional reconstruction method and system

Abstract

The invention discloses a three-dimensional reconstruction method. Light projection equipment and light sensing equipment are adopted for reconstructing a three-dimensional mode of a target object. The light projection equipment projects a pattern to any target point on the target object for forming a projection point. The light sensing equipment records the projection point for forming a recording point and sets up coordinates, in the coordinate system of a light sensing equipment plane, of a calculation target point of a third coordinate system. Due to the technical scheme, the three-dimensional measurement and reconstruction method is simple and fast to use, and enables the three-dimensional object mode set up in a non-contact scanning mode to be more accurate, and the whole mode reconstruction system is low in cost and convenient to implement.

Description

technical field [0001] The invention relates to the field of optical three-dimensional measurement, in particular to a three-dimensional reconstruction method and system. Background technique [0002] With the development of 3D printing technology, it has important practical significance and research value to quickly and accurately obtain 3D data of objects and perform 3D modeling. Generally, there are three ways for people to obtain a 3D model of an object: the first way is to use modeling software, such as AutoCAD, to construct a 3D model close to the real object; the second way is to use a series of images or The third way is to scan the surface of the object through a 3D scanning device to obtain the 3D information of the object to reconstruct the 3D model. [0003] Among them, the third method is the 3D scanning method. Compared with the first two methods, it can obtain more accurate 3D data, and is suitable for modeling applications with certain precision requirements...

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Problems solved by technology

[0006] However, the traditional triangulation method has many limitations in practice. 1) The triangulation method involves the conversion between the respective focal planes of the light projection device and the light sensing device and the film plane coordinate system, that is, involves four coordinate systems. , and requires infinite approximation to obtain the final value, the algorithm has a large amount of calculation, and the data accuracy is low; 2) The calibration process is complicated, and a high-precision calibration board and a special calibration algorithm are required; 3) It cannot be obtained directly The color information of a three-dimensional object cannot be filled with color matching

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