Method and system for target detection and identification of aerial ocean images

Abstract

The invention is applicable to the ocean target detection technology and provides a method for target detection and identification of aerial ocean images. The method comprises the steps of 1, extracting visual words of aerial ocean images, uniting the visual words similar in meaning as a visual word and forming a visual dictionary with all the visual words, 2, extracting an area of interest in a single aerial ocean image, 3, extracting an SIFT (Scale Invariant Feature Transform) feature set, composed of feature points, of the area of interest, 4, carrying out similarity comparison of the feature points and the visual words, replacing a feature point with the corresponding visual word high in similarity, counting the frequency of the visual word, taking the place of the feature point, appearing in the area of interest and obtaining a description vector of the area of interest, and 5, classifying all description vectors obtained and outputting a classification result. The method for target detection and identification does not affected by illumination variation, shielding, geometrical transformation, changing in scale and the like, and is capable of accurately detecting and identifying ship objects.

Description

technical field [0001] The invention relates to marine target detection technology, in particular to a target detection and recognition method and system for marine aerial images. Background technique [0002] In terms of target recognition technology in marine aerial images, the United States has developed a system combining cameras and high-resolution cameras for coastal zone protection, beach use management, and marine traffic monitoring since 1998. Australia's CoastalCOMS system can complete a variety of practical functions including coastline extraction, beach tourist detection and offshore vessel target detection. The Coastline Protection Technology Center of Florida Atlantic University in the United States has developed a semi-automated video monitoring system for marine traffic monitoring in key sea areas, and detects potential threats through image analysis. my country's research on video monitoring technology for moving targets at sea started relatively late, and ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method and system for target detection and recognition of marine aerial images, aiming to solve the problem that target images in marine aerial images are difficult to detect and identify

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