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Extraction method and device for automatic port cargo ship

An extraction method and port technology, applied in image analysis, image enhancement, instruments, etc., can solve problems such as poor maritime monitoring accuracy, and achieve the effect of high robustness

Active Publication Date: 2019-12-20
SHENZHEN ZTE NETVIEW TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the embodiment of the present invention is to provide a method and device for extracting an automatic port cargo ship, aiming to solve the problem of poor accuracy of existing maritime monitoring

Method used

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  • Extraction method and device for automatic port cargo ship
  • Extraction method and device for automatic port cargo ship
  • Extraction method and device for automatic port cargo ship

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0065] Embodiment 1 of the present invention proposes an automatic port cargo ship extraction method. Such as figure 1 As shown, the method of Embodiment 1 of the present invention includes the following steps:

[0066] S1. Acquire a video frame of a scene image. The real-time video of the port is obtained through the monitoring camera, and the video frame of the scene image is obtained by preprocessing. Preprocessing is mainly to determine the monitoring area, including removing the river bank (coast) part, and only retaining the river (sea surface) part.

[0067] S2. Calculate the global saliency map according to the acquired video frames. In this step, the global saliency map can use the spectral residual saliency map SR, and the calculation process is as follows:

[0068] (1) Convert the acquired video frame to obtain a grayscale image I(x,y), and calculate its two-dimensional discrete Fourier transform fft(I(x,y)). Then calculate the phase angle spectrum P (u, v) and...

Embodiment 2

[0108] Embodiment 2 of the present invention proposes an extraction device for an automatic port cargo ship, such as Figure 5 As shown, the device includes:

[0109] Obtaining module 10, for obtaining the video frame of scene image;

[0110] Calculation module 20, for calculating the global saliency map according to the acquired video frame;

[0111] The processing module 30 is used to perform threshold processing and connected domain extraction on the global saliency map, so as to obtain regional pictures corresponding to each connected domain in the video frame;

[0112] Filtering module 40, is used for traversing area picture, filters out the area picture that does not include ship according to preset filter condition;

[0113] The analysis module 50 is configured to perform a local saliency analysis on the filtered area picture to obtain a result picture of the cargo ship in the port.

[0114] The working principle of Embodiment 2 of the present invention is specifical...

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Abstract

The present invention is applicable to the technical field of monitoring, and provides a method and device for extracting an automatic port cargo ship. The method includes the following steps: S1, acquiring a video frame of a scene image; S2, calculating global salience according to the acquired video frame Figure; S3, carry out threshold value processing and connected domain extraction to described global saliency map, obtain the region picture corresponding to each connected domain in described video frame; S4, traverse described region picture, filter out according to preset filter condition An area picture of the ship is included; S5. Perform a local saliency analysis on the filtered area picture to obtain a result picture of the cargo ship in the port. The method and device provided by the invention can improve the accuracy of ship monitoring.

Description

technical field [0001] The invention belongs to the technical field of monitoring, and in particular relates to an extraction method and device for an automatic port cargo ship. Background technique [0002] Due to the improvement of the level of intelligent monitoring technology, various intelligent monitoring functions that can be realized are becoming more and more abundant, such as head counting, vehicle tracking, and smoke detection. It is a general trend that intelligent video surveillance is applied to all walks of life in society. Different industries are gradually adopting intelligent surveillance technology to strengthen their own management capabilities, such as oil field anti-theft monitoring and prison fight alarm. Most of the solutions for maritime ship detection in existing actual engineering projects use a combination of software and hardware, using special maritime cameras and ship AIS systems to complete the ship tracking, positioning, counting, and speed m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T5/00G06K9/46
CPCG06T2207/10016G06V10/462G06T5/94
Inventor 山黎袁义雷李平生潘晖
Owner SHENZHEN ZTE NETVIEW TECH