Ocean distributed target detection method based on collective evolution of agents

Abstract

The invention discloses an ocean distributed target detection method based on collective evolution of agents, relating to the ocean target detection technology. The method comprises the steps of utilizing a synthetic aperture radar image, selecting an ocean background image in advance according to the ocean conditions of the ocean areas and computing the average gray distribution curve and dissimilarity degree distribution as the templates to establish a database according to the radar parameters. For the image areas to be detected, the radar parameters are used for retrieving the corresponding templates and the false-alarm probability is given to obtain the dissimilarity degree threshold of the gray distribution curve. If the dissimilarity degree is more than the threshold, the point is the target, and if the dissimilarity degree is less than the threshold, the point is the background. Upper and lower agents are designed according to the visual cognition process of human eyes. The lower agent carries out preliminary sensing and the upper agent computes the basic characteristic parameters of the distributed targets based on sensing, extracts information and carries out tendency association and combination. The upper and lower agents complete final target detection through collective cooperation. The method is fast and accurate in target detection.

Description

technical field [0001] The invention relates to the technical field of marine target detection, and is a method for detecting marine distributed targets through the evolution of intelligent body groups by using synthetic aperture radar images. Background technique [0002] Synthetic aperture radar has the characteristics of all-day and all-weather large-scale observation, and the characteristics of electromagnetic waves can observe targets that cannot be observed by other sensors such as optics. [0003] Common ocean distribution targets mainly include: ship wakes, oil slicks, ocean hydrodynamic phenomena, and atmospheric phenomena. The detection and identification of marine distribution targets are of great significance to the monitoring of marine environment and the study of marine phenomena. Ocean distribution targets are different from point targets and hard targets. They are composed of large areas of pixels with certain characteristics such as size, shape, and textur...

AI Technical Summary

Problems solved by technology

[0007] Distributed targets have fuzziness, divergence, and low contrast, which makes it difficult for existing methods to obtain better detection results; distributed targets are diverse, and existing methods are mostly for a certain type of distributed targets; marine SAR image observation The area is large, but the target is relatively small, and the traditional line scanning method performs many useless calculations

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