School video signal acquisition component, method, device, system and storage medium

By using optical methods to separate and acquire parallel and orthogonally polarized video signals of fish schools, the adverse effects of acoustic methods on fish growth and activities have been resolved, resulting in clear acquisition of fish school video signals and providing more accurate information on fish school status.

CN116193270BActive Publication Date: 2026-07-10SOUTHERN MARINE SCIENCE & ENGINEERING GUANGDONG LABORATORY (ZHANJIANG)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHERN MARINE SCIENCE & ENGINEERING GUANGDONG LABORATORY (ZHANJIANG)
Filing Date
2022-12-22
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing acoustic methods may adversely affect the normal growth and activities of fish when collecting underwater fish status signals, so a non-acoustic method is needed to obtain fish status information.

Method used

Optical methods are used to project a beam of light onto the fish school through a light source component. The light is then separated into parallel and orthogonally polarized light by an analyzer. Parallel polarized fish school video signals and orthogonally polarized fish school video signals are collected by parallel and orthogonal camera devices, respectively. Synchronous acquisition is achieved by combining a synchronization trigger. The polarization degree of the analyzer is adjusted to separate useful and useless light signals.

Benefits of technology

To obtain video images that more closely resemble the actual state of the fish school, reduce background interference, provide better video processing references, and form a clear video signal of the fish school.

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    Figure CN116193270B_ABST
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Abstract

The application discloses a fish school video signal acquisition assembly, method, device, system and storage medium. The fish school video signal acquisition assembly comprises: a light source assembly, which projects combined light to a target fish school; a polarizer, which has an incident light side, a parallel light exit side and a normal light exit side; the incident light side is arranged to face the combined light at the target fish school; the polarizer separates the combined light entering the incident light side into parallel polarized light and normal polarized light, projects the parallel polarized light to the parallel light exit side, and projects the normal polarized light to the normal light exit side; a parallel camera device, which is arranged to face the parallel light exit side and collects the parallel polarized light to form a parallel polarized fish school video signal; and a normal camera device, which is arranged to face the normal light exit side and collects the normal polarized light to form a normal polarized fish school video signal. The fish school video signal acquisition assembly disclosed by the application can solve the technical problem that the current acoustic means for obtaining underwater fish school state information may have an adverse effect on the normal activities of fish.
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