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Structured light three-dimensional scanning method

A three-dimensional scanning and structured light technology, applied in the direction of using optical devices, measuring devices, instruments, etc., can solve the problems of affecting scanning accuracy and being susceptible to noise interference, and achieve simple encoding and decoding, strong anti-interference ability, and high resolution. Effect

Inactive Publication Date: 2021-02-09
苏州原点智能科技有限公司
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  • Claims
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Problems solved by technology

Since each point is encoded, this scheme has a very high scanning density in theory, but since the distance between encoded codewords decreases with the increase of the number of codewords, this scheme is easier in the decoding process. Affected by noise, affecting scanning accuracy

Method used

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Embodiment Construction

[0018] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0019] In order for those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiment is only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall belong to the protection scope of the present invention.

[0020] It should be noted that the terms "first" and "sec...

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Abstract

The invention provides a structured light three-dimensional scanning method which comprises the following steps: S1, calibrating a camera device, and establishing a corresponding relationship betweenimage pixel coordinates and a world coordinate system; s2, generating compact point cloud data based on a Gray code and line shift coding combined structure light calibration system; s3, inputting thepoint cloud data in the step S2 into a filter, and obtaining first point cloud data after noise reduction; s4, performing coarse alignment on the first point cloud data in the step S3, and then performing fine alignment to obtain second point cloud data; s5, performing plane reconstruction after surface smoothing processing is carried out on the second point cloud data. Therefore the structured light three-dimensional scanning method has the advantages of being easy and convenient to encode and decode, high in anti-interference capacity and high in resolution ratio and is suitable for three-dimensional scanning of static targets.

Description

technical field [0001] The invention relates to a three-dimensional scanning solution, in particular to a method for realizing three-dimensional scanning by using structured light technology. Background technique [0002] Structured light is an important optical method for 3D scanning. It projects a set of mathematically constructed light patterns to illuminate the measured object in a certain order. A camera at a known distance from the projector simultaneously captures a set of images of the illuminated object. The image seen by the camera is distorted by the surface shape of the scanned object relative to the flat reference surface used for calibration. The principle of geometric triangulation makes it possible to calculate the XYZ coordinates of each point on the surface of the scanned object. The obtained point cloud data is then used for the computational construction of a detailed 3D model of the surface of the scanned object. [0003] At present, the mainstream co...

Claims

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Application Information

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IPC IPC(8): G01B11/00G01B11/24
CPCG01B11/002G01B11/24
Inventor 马黎磊
Owner 苏州原点智能科技有限公司
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