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Underwater target three-dimensional reconstruction method 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: 2014-08-06
QINGDAO UNIV
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  • Application Information

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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.

Method used

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  • Underwater target three-dimensional reconstruction method based on line structured light
  • Underwater target three-dimensional reconstruction method based on line structured light
  • Underwater target three-dimensional reconstruction method 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 an underwater target three-dimensional reconstruction method based on line structured light. The method includes the following steps that a, an underwater two-dimensional image including depth information is acquired; b, enhancement processing is conducted on the underwater two-dimensional image; c, noise reduction processing is conducted on the two-dimensional image acquired in the step b; d, image edge detecting and image shape processing are carried out on the two-dimensional image acquired in the step c, and the center of each laser streak is extracted; e, the two-dimensional image acquired in the step d is calibrated; f, three-dimensional coordinates are acquired from the two-dimensional image acquired in the step e; g, the three-dimensional coordinates are reconstructed through computer high-level programming languages, namely visual underwater target three-dimensional information is obtained. By means of the underwater target three-dimensional reconstruction method based on line structured light, the influence on detecting precision because of suspended matter in water, light absorbing and scattering by seawater, uneven light fields and the like can be effectively lowered, wide-angle and long-distance underwater target three-dimensional information extraction is achieved, and underwater long-distance high-precision real-time target three-dimensional detection is realized.

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 Applications(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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