Three-dimensional reconstruction method based on color pseudo-random coded structured light

A technology of pseudo-random coding and three-dimensional reconstruction, which is applied in the field of three-dimensional reconstruction based on color pseudo-random coding structured light, can solve the problem of low accuracy of measurement results, achieve high precision, and enhance the effect of surface information

Active Publication Date: 2019-01-11
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

This method has low measurement accuracy when the texture of the target object is not rich enough or contains a lot of repeated texture information.

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[0038] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] A three-dimensional reconstruction method based on color pseudo-random coded structured light, comprising the following steps:

[0040] Step S1. Project a preset colored structured light pattern on the target object 1; the colored structured light pattern includes multiple squares, and any two adjacent squares have different colors; The odd rows of the pattern are the same color, and the even rows are the same color. In this embodiment, the preset color structured light pattern is projected onto the target object 1 through the projector 4, and the projector 4 is connected with the host c...

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Abstract

The invention discloses a three-dimensional reconstruction method based on color pseudo-random coding structured light, comprising the following steps: projecting a preset color structured light pattern on a target object, wherein the color structured light pattern comprises a plurality of squares, and the colors of any two adjacent squares are different; on the premise of satisfying the binocularvision polar constraint, the odd lines of color structured light pattern are the same in color, and the even lines are the same in color; acquiring an object image in the step by using a camera; performing corner extraction of the target image; carrying out feature description and matching of the proposed corner points, and using a triangulation method to complete the three-dimensional reconstruction. The invention enhances surface information of an object in a three-dimensional scene. The experiment shows that the root-mean-square error of three-dimensional reconstruction of a planar objectis 0.36 mm on the premise that only one color structured light pattern is projected, and it is obvious that the three-dimensional reconstruction method of the invention has the advantages of higher accuracy, accuracy and effectiveness, and can be applied to three-dimensional reconstruction of an acolor object.

Description

technical field [0001] The invention relates to the technical field of three-dimensional reconstruction, in particular to a three-dimensional reconstruction method based on color pseudo-random coded structured light. Background technique [0002] Traditional binocular stereo vision is to obtain images with parallax by two left and right cameras, and use the triangulation principle to calculate and obtain the three-dimensional information of the object. In this method, the accuracy of the measurement results is low when the texture of the target object is not rich enough or contains a lot of repeated texture information. The active 3D measurement method using projection coded structured light is an effective and reliable 3D reconstruction method, which has attracted the attention of many scholars in recent years. Among them, for the identification and matching of feature points, a color rhombus projection pattern is designed using five colors of red, green, blue, black and w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00
CPCG06T17/00
Inventor 王国新宋婀娜师楠朱显辉韩龙王书侠
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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