Acoustic image-based aquatic ecosystem analysis system

Abstract

The acoustic image-based aquatic ecosystem analysis system includes: a scanning sonar device configured to acquire a plurality of acoustic images of the aquatic area within a predetermined period, each acoustic image having an acoustic image capture time; a fixing device configured to fix the scanning sonar device at a predetermined location in the aquatic area; and an acoustic image processing device communicatively connected to the scanning sonar device to receive the plurality of acoustic images. The acoustic image processing device includes: a storage medium configured to store a plurality of modules, the plurality of modules including: a target recognition module for identifying biological targets and environmental targets from the acoustic images; a feature extraction module for extracting biological features from biological targets and environmental features from environmental targets; and an ecosystem analysis module for analyzing the acoustic image capture time, biological features, and environmental features to output ecosystem analysis results; and a processor coupled to the storage medium, the processor being configured to access and execute the plurality of modules stored in the storage medium.

Claims

1. A water ecological analysis system based on acoustic imagery, comprising: a scanning sonar device configured to acquire a plurality of acoustic images of a water area within a predetermined period, each of the acoustic images having an acoustic image acquisition time; a fixing device configured to fix the scanning sonar device at a predetermined position in the water area; and an acoustic image processing device communicatively connected to the scanning sonar device to receive the plurality of acoustic images, the acoustic image processing device comprising: a storage medium configured to store a plurality of modules, the plurality of modules comprising: a target recognition module for identifying biological targets and environmental targets from the acoustic images; a feature extraction module for extracting biological features from the biological targets and environmental features from the environmental targets; and an ecological analysis module for analyzing the acoustic image acquisition time, the biological features, and the environmental features to output ecological analysis results; and a processor coupled to the storage medium, the processor configured to access and execute the plurality of modules stored in the storage medium.

2. The aquatic ecosystem analysis system as described in claim 1, wherein the biological characteristics include biological target morphology, biological target quantity, and biological target location, and the biological targets are classified into a plurality of biological groups according to the biological target morphology.

3. The aquatic ecological analysis system as described in claim 2, wherein the ecological analysis results include ecological supply information, which is obtained by the ecological analysis module performing the following actions: generating morphological quantity distribution data based on the quantity and morphology of the biological target; performing statistical model calculations on the morphological quantity distribution data to obtain a morphological quantity distribution index, and obtaining the ecological supply information based on the morphological quantity distribution index.

4. The aquatic ecological analysis system as described in claim 3, wherein the ecological analysis results include spatial analysis information, which is obtained by the ecological analysis module performing the following actions: generating quantity temporal distribution data based on the acoustic image capture time and the quantity of biological targets; inputting the quantity temporal distribution data and the location of the biological targets into a spatial correlation model to obtain a spatial temporal distribution index, and obtaining the spatial analysis information based on the quantity and the spatial temporal distribution index.

5. The aquatic ecological analysis system as described in claim 3, wherein the ecological analysis results include spatial coupling analysis information, which is obtained by the ecological analysis module performing the following actions: generating spatial distribution density data based on the number and location of the biological targets; performing spatial correlation analysis on the spatial distribution density data and the environmental characteristics to obtain the spatial coupling analysis information.

6. The aquatic ecological analysis system as described in claim 5, wherein the ecological analysis results include cluster spatial coupling analysis information, which is obtained by the ecological analysis module performing the following actions: generating cluster location quantity distribution data based on the number of biological targets and the location of the biological targets in each of the biological groups; performing the spatial correlation analysis on the cluster location quantity distribution data and the environmental characteristics to obtain the cluster spatial coupling analysis information.

7. The aquatic ecological analysis system as described in claim 3, wherein the ecological analysis results include behavioral analysis information, which is obtained by the ecological analysis module performing the following actions: generating the movement trajectory of the biological target based on the positional changes of the biological target during the predetermined period; matching the movement trajectory with preset trajectory geometric features to generate the behavioral analysis information in the ecological analysis results.

8. The aquatic ecological analysis system as described in claim 7, wherein the ecological analysis results include temporal information on movement behavior, which is obtained by the ecological analysis module performing the following actions: classifying the movement trajectory into structured movement trajectories and unstructured movement trajectories based on the preset trajectory geometric features; counting the structured movement trajectories and the unstructured movement trajectories respectively, and generating the temporal information on movement behavior based on the acoustic image capture time and the number of structured movement trajectories and the number of unstructured movement trajectories.

9. The aquatic ecological analysis system as described in claim 8, wherein the ecological analysis results include behavioral coupling analysis information, which is obtained by the ecological analysis module performing the following actions: performing spatial correlation analysis on the movement trajectory and the environmental features to obtain the behavioral coupling analysis information.

10. The aquatic ecological analysis system as described in claim 9, wherein the ecological analysis results include group behavior coupling analysis information, which is obtained by the ecological analysis module performing the following actions: generating group structure behavior data based on the structured and unstructured movement trajectories of each of the biological groups; and performing spatial correlation analysis on the group structure behavior data and the environmental characteristics to obtain the group behavior coupling analysis information.

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