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A 3D Visualization Method of Ocean Water Acoustic Field Based on Improved Ray-casting Algorithm

A light and underwater sound technology, applied in other database browsing/visualization, computing, 3D image processing, etc., can solve the problems of speeding up the 3D visualization of ocean water sound field, etc., to reduce the number, fast visualization speed, and improve efficiency Effect

Active Publication Date: 2022-03-25
HARBIN ENG UNIV
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Problems solved by technology

However, these methods rely more on the performance of graphics hardware to speed up the 3D visualization of ocean water acoustic field, so they are more likely to be limited by the performance of graphics hardware

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  • A 3D Visualization Method of Ocean Water Acoustic Field Based on Improved Ray-casting Algorithm
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  • A 3D Visualization Method of Ocean Water Acoustic Field Based on Improved Ray-casting Algorithm

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Embodiment Construction

[0064] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0065] The present invention is a three-dimensional visualization method of ocean water sound field based on an improved ray casting algorithm, which improves the speed of three-dimensional visualization of ocean water sound field from the principle of visualization algorithm. The method is not limited by graphics hardware and can be implemented on a common PC, and Has a faster visualization speed.

[0066] The invention specifically includes three-dimensional underwater sound field data preprocessing, resampling point coordinate calculation, resampling point interpolation calculation, data classification, and image synthesis. The specific process is as figure 1 shown, including the following steps:

[0067] Step 1: Preprocess the sound intensity propagation loss data of underwater acoustic waves obtained by the three-dimensional parabolic equ...

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Abstract

The invention discloses a three-dimensional visualization method of an ocean water acoustic field based on an improved ray projection algorithm, and belongs to the field of visualization of marine environment elements. Firstly, the ocean underwater acoustic wave sound intensity propagation loss data calculated by the three-dimensional parabolic equation model is preprocessed; then, for the image plane pixels, each light ray emitted in a predetermined direction is sampled at an adaptive interval, and all light rays on each ray are calculated. The coordinates of the resampling points, using the trilinear interpolation algorithm to interpolate all the resampling points. Finally, set different color values ​​and opacities for the interpolated resampling point values ​​according to user needs, classify and synthesize the data, and complete the three-dimensional visualization image of the ocean water sound field. The invention effectively reduces the number of resampling points in invalid voxels by dividing the three-dimensional data voxels of the underwater acoustic field, thereby improving the efficiency of three-dimensional visualization, and under the premise of ensuring image quality, the visualization speed is faster.

Description

technical field [0001] The invention belongs to the field of visualization of marine environment elements, and is a three-dimensional visualization method of marine water sound field based on an improved ray projection algorithm. Background technique [0002] The marine environment is extremely complex. The existence of various marine elements in seawater, such as seawater temperature, ocean fronts, vortices and internal waves, will affect the propagation of underwater sound waves. In addition, the complex seabed topography is also an important factor affecting the propagation of sound waves underwater. factor. This effect is manifested in the attenuation of sound intensity, which gradually decays with increasing horizontal distance and depth. [0003] The ocean water acoustic field is a scalar field in which the sound wave is affected by various factors when it propagates in the ocean, and the sound intensity changes with the change of the three-dimensional space. The oce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/904G06T15/04G06T17/00
CPCG06T15/04G06T17/00
Inventor 高峰程海涛刘厂赵玉新何忠杰郭健
Owner HARBIN ENG UNIV
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