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Portable three-dimensional imaging sonar and imaging method and system thereof

A technology of three-dimensional imaging and imaging method, which is applied in radio wave measurement system, image data processing, sound wave re-radiation and other directions, can solve the problems of poor real-time performance, large amount of calculation and high system cost, and achieves reduction of calculation amount and hardware performance. requirements, improve the effect of real-time

Inactive Publication Date: 2015-02-18
THE THIRD RES INST OF CHINA ELECTRONICS TECH GRP CORP
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Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to provide an imaging method for a portable three-dimensional imaging sonar, aiming at solving the problem that the volume rendering of the existing three-dimensional imaging sonar adopts the ray projection method. Poor real-time performance and unsuitable for portable 3D imaging sonar

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[0026] In order to make the object, technical solution and advantages 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, not to limit the present invention.

[0027] The imaging method of the portable three-dimensional imaging sonar proposed by the present invention is to apply the miscutting-deformation technology to the imaging process of the portable three-dimensional imaging sonar. The method first projects the object space into the miscutting space through the miscutting transformation, and synthesizes the intermediate image , the observation direction of the intermediate image is parallel to the Z-axis direction, and then the intermediate image is deformed into a predetermined image space to obtain a final three-dimensional result image.

[0028] ...

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Abstract

The invention belongs to the field of sonar imaging, and provides portable three-dimensional imaging sonar and an imaging method and system thereof. According to the method and system, a shear mapping-deformation technology is applied to the imaging process of the portable three-dimensional imaging sonar. The method comprises the steps that first, an object space is projected into a shear mapping space through shear mapping transformation, an intermediate image is synthetized, the observation direction of the intermediate image is parallel to the Z-axis direction, then the intermediate image is deformed to a preset image space, and a final three-dimensional result image is obtained. By the aid of the intermediate image perpendicular to the Z-axis direction, the re-sampling process of three-dimensional space is converted to be the sampling process of a two-dimensional plane, calculation is greatly reduced, the requirement of the system for hardware performance is lowered, the real-time performance of display can be improved, and the imaging method and system are particularly suitable for the portable three-dimensional imaging sonar.

Description

technical field [0001] The invention belongs to the field of sonar imaging, and in particular relates to a portable three-dimensional imaging sonar and its imaging method and system. Background technique [0002] Three-dimensional imaging sonar is a device that can display the data obtained by sonar scanning in the form of images when the target object and the sonar are in relative motion. Sound waves have different physical effects such as reflection, transmission, and scattering. By analyzing, extracting, and displaying the intensity and position information of objects affected by sound waves, a three-dimensional sonar image of underwater objects can be obtained. [0003] Generally, a three-dimensional imaging sonar can include two parts: a signal processor and a main control unit. The signal processor is used to complete the collection, processing and uploading of 3D sonar data; the main control unit is used to provide a visual interface and complete 3D image display. A...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/08G06T3/00G01S15/89
Inventor 董雷曾锋郭晓明刘峰周瑜刘德铸
Owner THE THIRD RES INST OF CHINA ELECTRONICS TECH GRP CORP
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