Automatic military-civilian attribute identification method of ship target in optical remote sensing image

Abstract

The invention discloses an automatic military-civilian attribute identification method of a ship target in an optical remote sensing image, and relates to the field of automatic processing of opticalremote sensing images. In the method, a military-civilian attribute identification characteristic space of the ship target is constructed by acquiring a ship target training sample and conducting a series of operations such as manual military-civilian attribute identification, normalized resampling, set generation, average image calculation, difference image calculation and orthogonal vector calculation on the training sample, the test image is projected to the space, and the military-civilian attribute of the ship target in the test image can be automatically identified through distance measurement. According to the method, only one-off construction of the military-civilian attribute identification characteristic space of the ship target is needed, and the military-civilian attribute of the ship target found in the test image can be automatically identified in future work through the characteristic space. By means of the method, the military-civilian attribute of the ship target newlyfound in the optical remote sensing image can be automatically identified, the brain of specialized interpretation personnel is freed, and the working efficiency of ship target identification is greatly improved.

Description

technical field [0001] The invention relates to the field of automatic processing of optical remote sensing images, in particular to an automatic identification method for military and civilian attributes of ship targets in optical remote sensing images. Background technique [0002] Satellite remote sensing technology is an effective means to detect ship targets at sea. When the spatial resolution of remote sensing images is low, only ship targets can be found; when the spatial resolution of remote sensing images is high, not only ship targets can be found It can also distinguish and identify the attributes and types of ship targets. [0003] According to the characteristics of remote sensing images, researchers have proposed various ship target detection algorithms. Generally speaking, most of them are based on the difference between the gray level of the target and the gray level of the background. Such as target extraction method based on minimum error threshold segment...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the main purpose of the present invention is to propose an automatic military-civilian attribute discrimination algorithm for a ship target through manual screening of a large number of ship targets obtained in optical remote sensing to find out the target of interest. Ship targets are automatically divided into military ships and civilian ships, so as to meet the target observation needs of different military and civilian users, and narrow the scope for further fine identification of ship targets

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