3D reconstruction method of underwater target based on line structured light

A technology for underwater target and 3D reconstruction, applied in 3D modeling, optical device exploration, image data processing, etc.

Inactive Publication Date: 2017-12-08
QINGDAO UNIV
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Problems solved by technology

However, this patent uses sonar equipment and multi-beam detection equipment for data collection, which still cannot avoid the impact of special underwater conditions on the accuracy and detection range of 3D data.

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  • 3D reconstruction method of underwater target based on line structured light
  • 3D reconstruction method of underwater target based on line structured light
  • 3D reconstruction method of underwater target based on line structured light

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Embodiment Construction

[0078] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0079] A 3D reconstruction method for underwater targets based on line structured light, such as figure 1 As shown, there are seven steps in total, including steps a to g carried out in sequence:

[0080] Step a, using the underwater structured light measurement system to complete the collection of three-dimensional information of the underwater target, and obtain an underwater two-dimensional image containing depth information;

[0081] The underwater structured light measurement system, such as figure 2 As shown, it consists of structured light source laser 1, camera 2, mobile platform 3, image processing and target three-dimensional reconstruction system 4; wherein, structured light source laser 1 and camera 2 are respectively fixed on mobile platform 3, and the linear light emitted by structured light source laser 1 The plane formed by the laser is per...

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Abstract

The invention discloses a three-dimensional reconstruction method of an underwater target based on line structured light, which is carried out in sequence as follows: a. acquiring an underwater two-dimensional image containing depth information; b. performing enhancement processing on the underwater two-dimensional image; c, carry out denoising processing to the two-dimensional image obtained in step b; d, carry out image edge detection and image morphology processing on the two-dimensional image obtained in step c, extract the center of the laser stripe; e, obtain the two-dimensional image in step d Carry out calibration; f, obtain the three-dimensional coordinates from the two-dimensional image obtained in step e; g, use the advanced computer programming language to reconstruct the three-dimensional coordinates, that is, obtain the visualized three-dimensional information of the underwater target. The method of the present invention effectively reduces the impact on the detection accuracy due to suspended matter in water, absorption and scattering of light by seawater, non-uniform light field, etc., completes large-angle, long-distance underwater target three-dimensional information extraction, and realizes underwater long-distance Distance, high-precision, real-time three-dimensional detection of targets.

Description

technical field [0001] The invention relates to a technology for three-dimensional reconstruction of an underwater target, in particular to a method for three-dimensional reconstruction of an underwater target based on line structured light. Background technique [0002] With the rapid development of science and technology, the continuous expansion of marine resources development, underwater engineering construction and underwater military applications, the importance of underwater detection technology has become increasingly apparent. Underwater detection technology is also gradually developing from two-dimensional image detection technology to three-dimensional target and scene reconstruction technology. The 3D reconstruction technology of underwater targets can provide humans with a suitable observation channel through the comprehensive utilization of various advanced technologies such as optical imaging technology, image processing technology, electronics and communicati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/00G01V8/10
Inventor 崔海荣王贞张秉森郭春锋吴海霞兰淑丽张磊郑海永
Owner QINGDAO UNIV
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