Sea surface small-area oil spill area detection system and method based on multi-sensor fusion

An area detection and small-area technology, applied in image analysis, image enhancement, instruments, etc., can solve the problems of long repeated observation period, failure to detect and alarm, and failure to image processing, etc., to achieve small impact on optics and weather conditions, and good application The effect of foreground and image stabilization

Pending Publication Date: 2020-05-19
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the detection of oil spills on the sea surface mainly uses long-distance remote sensing imaging. Although the oil spill area can be separated from the water surface area in a large area of ​​water, the monitoring method is limited by the satellite transit time, the cyclic shooting of the aircraft, and the repeated observation period. Usually after the accident has caused serious consequences, detection technology is used to deal with the aftermath of the oil spill accident, and it is often impossible to detect and call the police in the early stage of the oil spill
It can be seen that due to the limitation of resolution and distance of long-distance remote sensing, the monitoring of small-scale oil spill pollution does not have real-time performance and accuracy.
[0003] Chinese patent CN109241976A discloses a method for estimating oil spill area based on image processing and laser ranging. Although multiple sensing methods are integrated in the monitoring process, it uses an optical camera for imaging, which cannot rule out uneven illumination in optical imaging. , solar flares and interference caused by sea waves; when calculating the area of ​​the oil spill area, edge detection technology is used for detection, and it is impossible to process images with inconspicuous edges or images that do not capture the overall edge, and it is impossible to rule out interfering object bands with obvious edges coming disturbance
Chinese patent CN102680111B discloses an infrared thermal imager and its measurement method that can measure the heating area of ​​an object. Although thermal infrared imaging technology is used, it directly estimates the area on the basis of the captured image and sensor data when processing data, and In the calculation process, only the mathematical relationship of the data is used, and the calculation area is not accurately divided, so that the calculation accuracy cannot meet the requirements of accurate monitoring

Method used

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  • Sea surface small-area oil spill area detection system and method based on multi-sensor fusion
  • Sea surface small-area oil spill area detection system and method based on multi-sensor fusion
  • Sea surface small-area oil spill area detection system and method based on multi-sensor fusion

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Effect test

Embodiment 1

[0051] Such as figure 1 Shown is an embodiment of the detection system for a small-scale oil spill area on the sea surface based on multi-sensing fusion of the present invention, including an infrared thermal imaging camera, a computing terminal, a displacement sensor for measuring the distance between the photographed object and the infrared thermal imaging camera, and The inclination sensor is used to measure the inclination angle of the infrared thermal imager to the ground. The infrared thermal imager is connected to the computing terminal with two-way signals. outside of the imager. In this embodiment, a signal conversion circuit is connected between the displacement sensor, the inclination sensor and the computing terminal, and the signal conversion circuit is used to convert an analog signal into a digital signal.

[0052] During the implementation of this embodiment, the image of the oil spill on the sea surface is taken by the infrared thermal imager and the optical ...

Embodiment 2

[0058] Such as Figure 2 to Figure 3 Shown is a specific embodiment of the method for detecting a small area of ​​oil spilled area on the sea surface based on multi-sensing fusion of the present invention, including the following steps:

[0059] S10. Use the thermal imaging camera to capture the oil spill on the sea surface to obtain the original infrared image, and transmit it to the computing terminal; use the displacement sensor and the inclination sensor to detect the position information when the thermal imaging camera is shooting, and transmit it to the computing terminal;

[0060] S20. Perform grayscale processing, filtering processing, and sharpening processing on the original infrared image in step S10 to obtain a sharpened image containing oil spill information;

[0061] S30. Perform a threshold segmentation operation on the sharpened image in step S20 to obtain a binary image, where 0 represents the background area and 1 represents the oil spill area;

[0062] S40....

Embodiment 3

[0088] This embodiment is an application example of the detection method in Embodiment 2. The oil spill profile of the real sea surface was simulated in the laboratory of the Beihai Branch of the State Oceanic Administration, and an infrared thermal imager was used to collect sea surface images. By controlling the experimental illumination, air humidity, Variables such as surface wind speed, wave width, and water surface velocity can simulate real variables such as sea wind, sea fog, sea surface waves, and undercurrents in sunny, cloudy, and night environments on the real sea. In order to verify the effectiveness of the test on different types of oil spills, three oil samples with different viscosities and densities were selected: 20g petroleum crude oil, 20ml 85W-140 heavy oil, 20ml 0W-20 light oil, using the method in Example 2 Calculate the area calculation results of three oil spills under different environments. in:

[0089] Figure 7 The original thermal infrared image...

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Abstract

The invention relates to the technical field of marine ecological protection. More specifically, the invention relates to a sea surface small-area oil spill area detection system and method based on multi-sensor fusion. An original infrared image is acquired by using a thermal infrared imager; an original infrared image is processed by using an image processing technology, infrared image noise iseliminated by using median filtering, an oil spill area is segmented according to image gray features, mathematical morphology secondary denoising is used, image features are extracted, and the oil spill area of the oil spill area is calculated by combining a pixel area method. Based on the detection system and the detection method, the influence of low illuminance, night, sea waves, undercurrentand other external environments is effectively eliminated; the capability of separating the water surface background from the real oil spilling area under various conditions is high, the accurate realoil spilling area of the water surface is obtained through calculation, and the method is suitable for calculation of different types of oil spilling areas and has good application prospects in the fields of offshore small-area oil spilling detection, marine environment protection and the like.

Description

technical field [0001] The present invention relates to the technical field of marine ecological protection, and more specifically, to a detection system and detection method for a small-scale oil spill area on the sea surface based on multi-sensor fusion. Background technique [0002] Sea oil spill accidents are the most harmful man-made accidents to marine ecology today. Sea oil spill accidents are usually sudden. In addition to strengthening the operating level and safety awareness of operators, how to quickly detect the oil spill area when an oil spill accident occurs, Real-time detection and feedback of sea oil spill is of great significance to the protection of marine ecological environment. At present, the detection of oil spills on the sea surface mainly uses long-distance remote sensing imaging. Although the oil spill area can be separated from the water surface area in a large area of ​​water, the monitoring method is limited by the satellite transit time, the cycl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/62G06K9/62G06T7/136G06T7/11G06T5/00G06T5/30G06T3/60
CPCG06T7/62G06T7/136G06T7/11G06T5/30G06T3/608G06T2207/10048G06T2207/30181G06F18/251G06T5/70Y02A20/204
Inventor 辛丽平王利锋周玉国林旭梅唐永红李兆涛马兆兴
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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