A ship target detection and recognition method and system for spaceborne remote sensing optical images

Abstract

The invention discloses a ship target detection and recognition method of a spaceborne remote sensing optical image. The method of the invention includes a preprocessing step, an invalid information elimination step, a connected area marking step, a feature extraction step and a classifier design step; The strategy is to first down-sample and Gaussian filter the satellite image, then remove the land and isolated noise from the processed image, quickly extract the candidate area, mark the candidate area, extract the feature information after the image is rotated, and then extract the feature information Put it into the pre-trained classifier for further confirmation and analysis, remove false alarms, and find out the real ship target. At the same time, the invention also realizes a ship target detection and recognition system of the satellite-borne remote sensing optical image. This technical solution can effectively use the limited resources of on-board storage and computing to improve the stability and real-time performance of the ship detection algorithm, and at the same time effectively reduce the false alarm rate, and can provide accurate data in timely marine search and rescue and ship image positioning.

Description

technical field [0001] The invention belongs to the technical field of image detection and recognition, and more particularly relates to a ship target detection and recognition method and system for space-borne remote sensing optical images. Background technique [0002] Ship targets include merchant ships, cargo ships, passenger ships, and even warships. As a key target for maritime monitoring, timely ocean search and rescue, and real-time wartime strikes, it is an important content of automatic target detection and recognition of spaceborne remote sensing images. [0003] Researchers have carried out a lot of research on the automatic detection and recognition of ship targets in SAR images, mainly using the differences in SAR images of different electromagnetic scattering characteristics between ship targets and water bodies. The SAR ship target surveillance systems that have been completed or are currently being developed mainly include: Canada’s Ocean Monitoring Workstat...

AI Technical Summary

Problems solved by technology

However, the current relevant technologies are not accurate enough and are too complicated. Most of the data need to be sent back to the ground for processing, which cannot achieve real-time processing, which wastes precious time in marine search and rescue situations, and is unreliable, inaccurate, and poor in performance. good

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