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Acoustic image data evaluation-based species discrimination method

A technology of image data and discrimination method, which is applied in the field of squid fishing, to achieve the effect of reducing labor costs, saving labor costs, and good species recognition effects

Pending Publication Date: 2021-06-01
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, because squid is a weak acoustic scatterer, there are still some key issues in the acoustic research of squid, such as the determination of target strength, noise elimination methods, target discrimination, etc., which need to be further studied and solved

Method used

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  • Acoustic image data evaluation-based species discrimination method
  • Acoustic image data evaluation-based species discrimination method
  • Acoustic image data evaluation-based species discrimination method

Examples

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Embodiment Construction

[0039] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0040] Embodiments of the present invention relate to a species discrimination method based on acoustic image data evaluation, and the specific implementation steps are as follows:

[0041] Step (1): Set the survey elements of the sea test. The survey elements include the survey area, survey time, survey method, survey ship, sonar collection model and other information, and obtain acoustic image data through the echo detector; ...

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Abstract

The invention relates to an acoustic image data evaluation-based species discrimination method, which comprises the following steps of: (1) setting maritime test investigation elements, and obtaining acoustic image data through an echo detector; (2) eliminating sea surface noise and seabed noise, eliminating noise of the acoustic image data, and obtaining preprocessed acoustic image data; and (3) performing signal identification and target fish species identification on the preprocessed acoustic image data by adopting a frequency difference technology, and performing integral output on signals in an average volume backscattering intensity difference value range as target fish species. According to the invention, various noises can be effectively eliminated so as to achieve the purpose of finally accurately identifying species.

Description

technical field [0001] The invention relates to the technical field of squid fishing, in particular to a species discrimination method based on acoustic image data evaluation. Background technique [0002] Acoustic methods for assessing fishery resources began to be promoted in the 1970s, and are widely used in underwater navigation, fish detection, bathymetry, and seabed topographic mapping. At present, hydroacoustic technology has become an indispensable means of developing and studying the ocean, and has become an important means of marine ecological observation and marine biological resource assessment at home and abroad. As an application branch of hydroacoustics in the field of fishery resources research, fishery acoustics uses hydroacoustic methods to detect underwater organisms or assess and manage fishery resources, and has now developed into one of the important methods in the field of fishery resources research. According to the statistics of FAO, the annual catc...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06F2218/04
Inventor 唐峰华周为峰陈帅屈泰春吴祖立杨嘉樑张胜茂蒋科技
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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