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Ship speed estimation method and system of polarization SAR (Synthetic Aperture Radar)

A speed estimation, ship technology, applied in computing, image data processing, instruments, etc., can solve problems such as inability to accurately detect ship speed

Active Publication Date: 2018-01-19
CENT SOUTH UNIV
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  • Claims
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Problems solved by technology

[0005] In order to overcome the above-mentioned problem that the speed of the ship cannot be accurately detected or at least partially solve the above-mentioned problem, the present invention provides a method and system for estimating the speed of a polarimetric SAR ship

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  • Ship speed estimation method and system of polarization SAR (Synthetic Aperture Radar)
  • Ship speed estimation method and system of polarization SAR (Synthetic Aperture Radar)
  • Ship speed estimation method and system of polarization SAR (Synthetic Aperture Radar)

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Embodiment Construction

[0043] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

[0044] An embodiment of the present invention provides a polarimetric SAR ship speed estimation method, figure 1 A schematic flowchart of a method for estimating the speed of a ship by polarimetric SAR provided by an embodiment of the present invention, the method includes: S1, using a target detection algorithm to detect a ship from a scattering full power map of the main image of the area to be detected; S2, for the detected For each ship, take the ship as the matching window, move the matching window in the search window of the slave image in the area to be detected, and obtain the polarization matrix between the master image block and each slave image block in the matching window Similarit...

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Abstract

The invention provides a ship speed estimation method and system of a polarization SAR (Synthetic Aperture Radar). The method includes: S1, using a target detection algorithm to detect ships in a scattering full power image of a main image of a to-be-detected area; S2, for each detected ship, using the ship as a matching window to move the matching window in search windows of slave images of the to-be-detected area to acquire a polarization matrix similarity value between a main image block and each slave image block in the matching window; and S3, combining SAR imaging parameters to acquire aspeed of the ship according to a difference value of a center position of the main image block and a corresponding position of the slave image block corresponding to the maximum polarization matrix similarity value. The method of the invention is simple, and can precisely acquire speeds of the ships.

Description

technical field [0001] The invention relates to the application field of image processing, and more particularly, to a method and system for estimating the speed of a polarimetric SAR ship. Background technique [0002] With the rapid development of my country's economy since the reform and opening up, maritime transportation has also developed rapidly. Ships have developed rapidly in terms of quantity, tonnage, speed, etc., and are developing in the direction of standardization, large-scale and modernization. However, with the prosperity and development of ship shipping, the frequency of shipping accidents (ship collisions, ships hitting rocks, etc.) has also increased while achieving great convenience. These accidents seriously affect the smooth navigation of ships and the safety of people's lives, and at the same time pose a serious threat to the ecological balance of oceans and rivers. Therefore, the automatic identification and speed detection of ships passing through ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/30G06T5/30G06T7/60
Inventor 汪长城沈鹏
Owner CENT SOUTH UNIV
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