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Method for visualizing three-dimensional imaging sonar data

A three-dimensional imaging and three-dimensional array technology, which is applied in image data processing, 3D image processing, image analysis, etc., to reduce processing time, enhance the simple and direct processing process, and speed up the effect.

Inactive Publication Date: 2011-09-28
ZHEJIANG UNIV
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Problems solved by technology

[0003] In order to solve the visual display problem of three-dimensional image data in small sonar submersibles, the present invention proposes a data visualization method for three-dimensional imaging sonar

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  • Method for visualizing three-dimensional imaging sonar data
  • Method for visualizing three-dimensional imaging sonar data

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Embodiment Construction

[0040] Further illustrate the present invention below in conjunction with accompanying drawing.

[0041] The data visualization method of the three-dimensional imaging sonar of the present invention comprises the following steps:

[0042] (1) According to the spatial position of the 3D imaging sonar acquisition array, the motion state of the 3D imaging sonar acquisition array, the frequency and the intensity of the acoustic signal, the parameters of the collected 3D imaging sonar data are calibrated. The data of 3D imaging sonar can be visualized and quantitatively analyzed only after parameter calibration. The 3D imaging sonar image data is stored in a 3D array, and the dimension of the 3D array is determined to be , the physical meaning corresponding to each dimension is [azimuth direction, depth direction, heading direction]. The size of the detection range is determined by the product of the dimensions of the three-dimensional array and the isotropic resolution of the s...

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Abstract

The invention discloses a method for visualizing three-dimensional imaging sonar data, belonging to the field of image processing of the three-dimensional data in a small sonar submersible. The method comprises the following steps of: (1) carrying out parameter calibration on the collected three-dimensional imaging sonar data according to a space position of a three-dimensional imaging sonar collecting array, a motion state of the three-dimensional imaging sonar collecting array, a frequency of a sound wave signal and an intensity of the sound wave signal; (2) synthesizing the collected three-dimensional imaging sonar data into a three-dimensional array according to a parameter calibration result of the step (1); and (3) carrying out three-dimensional visualization on the obtained three-dimensional array by utilizing a ray cast direct volume rendering algorithm. In the invention, the three-dimensional imaging sonar data are visualized to process image data collected by a three-dimensional imaging sonar, therefore, the three-dimensional visualization display of the three-dimensional imaging sonar is realized for the first time, and the method facilitates to reflect detail information of a target and a submarine environment comprehensively and accurately.

Description

technical field [0001] The invention belongs to the technical field of sonar image post-processing. Background technique [0002] Sonar images obtained by small sonar submersibles are usually displayed in two-dimensional or pseudo-three-dimensional visualization methods to determine the two-dimensional correlation and scale of sonar mapping data, and to display the details of the third dimension through split screens. There are many pictures in the map, which only highlight the single-dimensional features of suspicious targets in the detection environment. The main disadvantage of this display method is that it cannot comprehensively and intuitively display the three-dimensional detailed geometric features of key targets. On the one hand, with the development of high-resolution image sonar technology, three-dimensional image data has appeared in small submersible sonar systems, but there is still a lack of visualization methods for such data. On the other hand, since the sm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/00G06T15/08G06T7/00
Inventor 夏顺仁洪一帆宋坤坡
Owner ZHEJIANG UNIV
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