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Ship identity recognition method based on image

A technology for identification and ships, which is applied in the field of image-based ship identification, can solve the problems that the background difference method is easily affected by the change of ambient light, the hardware requirements of the optical flow method are relatively high, and the noise immunity is poor, so as to achieve fast and effective detection , wide application prospects, the effect of small amount of calculation

Inactive Publication Date: 2018-04-06
THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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Problems solved by technology

In target detection technology, background difference method, inter-frame difference method, optical flow method, etc. are widely used. Background difference method is easily affected by changes in ambient light and is not suitable for situations where the background changes greatly. The selection of the time interval between frames is very important, and only the target boundary can be extracted; the optical flow method has relatively high hardware requirements, complex calculations, and poor noise immunity

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  • Ship identity recognition method based on image
  • Ship identity recognition method based on image
  • Ship identity recognition method based on image

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Such as figure 1 As shown, the image-based ship identification method includes the following steps:

[0018] 1. Use the camera to collect images in real time to obtain the original image. Among them, the camera adopts a PTZ camera with omni-directional pan-tilt movement and lens zoom and zoom control, which can capture in all directions without missing ships.

[0019] 2. The background of the original image is reconstructed and automatically updated by the average frame difference method to obtain a reference background image.

[0020] (21) Continuously collect the latest k original images, and perform grayscale processing on the original images to obtain a grayscale image, which is recorded as an image sequence f i (x, y) (i=1, 2, ..., k), where (x, y) represents the pixel coordinates in the image, f i (x, y) represents the gray val...

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Abstract

The invention discloses a ship identity recognition method based on an image, and the method comprises the steps: firstly carrying out target detection of a moving ship in an image sequence; secondlyextracting the physical position, size and color of a ship target according to a camera imaging model, an taking the ATS information as the reference; finally carrying out the quick discrimination ofthe identity of the ship target, and carrying out the alarm against an abnormal ship. The method is small in calculation burden, and is easy for engineering implementation. An experiment result indicates that the method can achieve the quick and accurate extraction and identity recognition of the ship target, and the method can be widely used in the military and civil fields of marine police, maritime affairs and ship management systems.

Description

technical field [0001] The invention relates to a method in the technical field of image processing, in particular to an image-based ship identification method. Background technique [0002] In military and civilian fields such as maritime police, maritime affairs, and ship management systems, video surveillance has become an important source of information. It can quickly and effectively extract ship targets from real-time video surveillance, automatically identify ship identities, and alert ships to abnormal behavior. , becoming an important application field. In target detection technology, background difference method, inter-frame difference method, optical flow method, etc. are widely used. Background difference method is easily affected by changes in ambient light and is not suitable for situations where the background changes greatly. The selection of the time interval between frames is very important, and only the target boundary can be extracted; the optical flow m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/32G06K9/46G06K9/40
CPCG06V20/46G06V10/24G06V10/30G06V10/44G06V10/56
Inventor 高东王珂魏华卓
Owner THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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