Three-dimensional detection method based on structured light and multiple light field cameras

A technology of three-dimensional detection and light field camera, which is applied in the direction of measuring device, fluid velocity measurement, velocity/acceleration/shock measurement, etc., and can solve the problem of low detection accuracy

Active Publication Date: 2021-04-09
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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Problems solved by technology

The advantage of this method is strong universality, but the disadvantage is that the detection accuracy is low

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  • Three-dimensional detection method based on structured light and multiple light field cameras
  • Three-dimensional detection method based on structured light and multiple light field cameras
  • Three-dimensional detection method based on structured light and multiple light field cameras

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[0050] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present invention clearer, 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, and are not intended to limit the present invention; the specific methods adopted in the implementation process are only examples, and the scope of the present invention includes but is not limited to The following methods are listed.

[0051] Light field cameras record the direction and intensity information of light in one shot by inserting a microlens array between the main lens and the image sensor. The light field camera can be regarded as a camera array, and the light field data can be decoded into an array of sub-view images. There is a parallax between the sub-view images, wh...

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Abstract

The invention discloses a three-dimensional detection method based on structured light and multiple light field cameras, and the method comprises the steps: building a three-dimensional detection system comprising a structured light source and a plurality of light field cameras, and placing a reference object of a to-be-detected target object in a working range of the three-dimensional detection system, carrying out structured light-based three-dimensional reconstruction on the reference object to obtain a reference object three-dimensional model, then placing a to-be-detected target object in a working range of the three-dimensional detection system, and carrying out structured light-based three-dimensional reconstruction on the to-be-detected target object to obtain a to-be-detected target object three-dimensional model; and performing three-dimensional detection on the reference object three-dimensional model and the to-be-detected target object three-dimensional model, and outputting a three-dimensional position of a key point of the to-be-detected target object. The advantages of the light field camera and the structured light in the field of close-range three-dimensional reconstruction are fully utilized, and three-dimensional detection of the target object in the working range can be accurately and efficiently completed.

Description

technical field [0001] The invention relates to the fields of computer vision and digital image processing, in particular to a three-dimensional detection system and method based on structured light and multi-light field cameras. Background technique [0002] Optical three-dimensional detection technology is an important non-contact detection technology, which has the advantages of non-contact, high efficiency and moderate precision, and is widely used in industrial detection, aerospace, agricultural production and other fields. Optical 3D inspection can be divided into active method and passive method according to the different lighting methods of the system. Structured light 3D detection is a commonly used active 3D detection method. Structured light is projected on the target surface, and then the surface information of the object is reconstructed from the 2D image collected by the camera. The detection model is simple and the accuracy is high, but the detection informati...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/20
CPCG01P5/20
Inventor 金欣周思瑶
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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