High-resolution SAR image ship detection method based on visual attention mechanism

A visual attention mechanism, high-resolution technology, applied in image enhancement, image analysis, image data processing, etc., can solve problems such as multiple false alarms, avoid false alarm problems, and improve real-time and accuracy.
CN107274401AActive Publication Date: 2017-10-20NAVAL AVIATION UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NAVAL AVIATION UNIV
Publication Date
2017-10-20

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Abstract

The invention discloses a high-resolution SAR image ship detection method based on a visual attention mechanism, and belongs to the field of radar image target detection. Mainly aiming at a problem that a conventional high-resolution SAR image target detection method cannot meet the demands of intelligent detection and the real-time requirements, the method comprises the steps: extracting a visual significant model of a frequency spectrum residual error part comprising target information in an image based on the frequency domain Fourier transform; carrying out the binarization processing of a saliency map and the extraction of an AOI (area of interest), analyzing and designing a local maximum posterior probability classifier to carry out the target detection of a target region from the angle of classification, and achieving the detection through a parameter estimation and decision criterion. The method can improve the ship detection real-time performance and accuracy through the high-resolution SAR image, and effectively solves a problem of higher false alarm in detection.
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Description

technical field

[0001] The invention belongs to the field of synthetic aperture radar image target detection, relates to a detection method that meets the real-time detection requirements of radar image targets, and is suitable for ship target detection and monitoring under complex sea conditions including a large number of uneven sea clutter areas and speckle noises. high-resolution synthetic aperture radar images. Background technique

[0002] Synthetic aperture radar (SAR) has the characteristics of all-time, all-weather, and large range, and is an important part of ocean monitoring and surveillance, among which ship target detection has increasingly become a research hotspot. Ship target detection in SAR images is the premise and foundation of its classification and recognition, and is an important aspect of SAR image applications.

[0003] With the launch and operation of new-generation SAR sensors such as Radarsat-2, TerraSAR-X, and Gaofen-3, SAR is gradually developi...

Claims

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