A low network utilization implementation for an oil spill detection system

Abstract

The application discloses a low-network-usage implementation method for an oil spill detection system, converts images collected by a front-end detection device into a gray-scale image, and respectively transmits the gray-scale image and oil spill region contour data detected by an intermediate processor to an upper computer; and the upper computer synchronously superimposes the gray-scale image and the oil spill region contour data according to frame numbers and then displays the superimposed image on a display and control interface of the oil spill detection system. The application can reduce network bandwidth occupancy rate of video transmission and improve transmission reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of image processing, and in particular to a low network utilization implementation method for an oil spill detection system. BACKGROUND

[0002] With the increasing dependence of economic and social development on oil energy, the amount of marine oil transportation is rising, the coastal oil exploitation is developing rapidly, and the oil refining and processing and storage facilities along the coast are also increasing, which leads to the long-term existence of oil pollution risks in the coastal waters of China.

[0003] In the face of the rapid development of the oil industry, the project engineering difficulty is increasing, the engineering and equipment volume is continuously increasing, and the long-distance crude oil logistics is becoming increasingly busy. Of course, the technical level of preventing hidden dangers is gradually improving. On the other hand, even if an accident occurs, we can minimize the damage through various technological means. Today, innovative progress has been made in oil spill monitoring, prediction and early warning, emergency decision-making, and damage identification and evaluation. A water oil spill emergency treatment technology support system has been established, which has improved the oil spill emergency technology level in China to a certain extent.

[0004] Sea surface oil spill detection uses infrared detection and radar detection. In order to truly display the oil spill detection results, the infrared detection video and radar detection data need to be videoized and displayed for quick judgment and quick disposal. However, the communication distance is far and the wireless communication technology problem always exists in the marine operation environment, which causes the network transmission bandwidth to be not as redundant as the wired and wireless networks on land. SUMMARY

[0005] Therefore, the present application provides a low network utilization implementation method for an oil spill detection system, which can reduce the network bandwidth occupancy rate of video transmission and improve the transmission reliability.

[0006] The technical solution adopted by the present application is as follows:

[0007] A low network utilization implementation method for an oil spill detection system, the implementation method comprises the following steps:

[0008] The image collected by the front-end detection device is converted into a gray-scale image, and the oil spill area contour data detected by the intermediate processing machine are transmitted to the upper computer respectively, and the upper computer synchronously superimposes the gray-scale image and the oil spill area contour data according to the frame number and then displays them on the display and control interface of the oil spill detection system.

[0009] Further, the front-end detection device comprises an infrared thermal imager and a radar, the original video of the infrared thermal imager is frame-extracted and transmitted, and the transmission rate is lower than the collection rate; the collection rate of the radar is 1-5 frames / s, and the transmission rate is consistent with the collection rate.

[0010] Further, the radar sent oil spill area profile data received by the host computer adopts the format of bytes, data content and data type; wherein the data content includes: the number of oil spill areas, oil area number, confidence, centroid bearing, centroid distance, centroid coordinates, centroid drift speed, area, area change rate, contour point number, contour point image coordinates, contour point longitude and latitude.

[0011] Further, the infrared thermal imager sent oil spill area profile data received by the host computer adopts the format of bytes, data content and data type; wherein the data content includes: the number of oil spill areas, oil area number, confidence, centroid bearing, centroid distance, centroid coordinates, centroid drift speed, area, area change rate, contour point number, contour point image coordinates, contour point longitude and latitude.

[0012] Further, the display and control interface includes a graphic display and a list display, the graphic display displays the grayscale image, and the list display displays the oil spill area profile data.

[0013] Beneficial effects:

[0014] 1. The present application converts the image collected by the front-end detection device into a grayscale image, which can compress image data; secondly, the intermediate processing machine transmits the detected oil spill area profile data, which further reduces the network bandwidth occupancy rate and improves the network transmission reliability while obtaining good detection effect; thirdly, the grayscale image and the oil spill area profile data are transmitted separately, which can reduce the picture transmission data volume (large data volume) while not reducing the transmission volume of the detected area profile data (small data volume), and finally, the data superposition display at the client side can also achieve dynamic real-time detection effect.

[0015] 2. The original video of the infrared thermal imager is frame-extracted for transmission, and the transmission rate is lower than the collection rate, which can reduce the network bandwidth occupancy rate while ensuring the smoothness of CAN bus transmission; the radar collection rate and transmission rate both adopt low frame rate, which also reduces the network bandwidth occupancy rate. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a radar oil spill detection display and control interface.

[0017] Figure 2 It is an infrared oil spill detection display and control interface. DETAILED DESCRIPTION

[0018] The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0019] The application provides a low network utilization implementation method for an oil spill detection system, which adopts three means to reduce the network bandwidth occupancy rate of video transmission:

[0020] (1) Gray image: normalize the image collected by the front-end detection device and convert it into a gray image to compress the image data.

[0021] (2) Reduce the image transmission rate: the front-end detection device includes an infrared thermal imager and a radar, the original video of the infrared thermal imager is transmitted by frame extraction, and the transmission rate is lower than the collection rate, in the embodiment, the original video collection rate of the infrared thermal imager is 25 frames / s, and the transmission rate is reduced to 10 frames / s by frame extraction. The radar collection rate is 1-5 frames / s, and the transmission rate remains consistent with the collection rate; in the embodiment, the radar collection rate is 1 frame / s, and the transmission rate is 1 frame / s.

[0022] (3) Transmission of oil spill area data: if the oil spill areas detected by the infrared and radar are marked on the original image, color images with large data volume will be formed, which will inevitably greatly increase the network bandwidth occupancy rate. Therefore, after the original image is converted into a gray image, in order to more clearly and explicitly display the oil spill area, the infrared processing machine and the radar processing machine (intermediate processing machine) transmit the detected oil spill area contour data through the network.

[0023] The oil spill area contour data and the gray image are transmitted to the upper computer respectively, and the upper computer synchronously superimposes the gray image and the oil spill area contour data according to the frame number and then displays them on the display and control interface of the oil spill detection system.

[0024] The oil spill image sent by the radar to the upper computer is a compressed 1050*1050 image, and the oil spill area contour data sent by the radar adopts the format of bytes, data content and data type; wherein the data content includes: the number of oil spill areas, the oil area number, the confidence (0-100), the centroid direction (unit: °), the centroid distance (unit: m), the centroid coordinates, the centroid drift speed (unit: m / s), the area (unit: m 2 / s), the area change rate (unit: m 2 / s), the number of contour points, the contour point image coordinates, and the contour point longitude and latitude (unit: °). In the embodiment, the data format is shown in Table 1.

[0025] Table 1: Radar oil spill detection data format

[0026]

[0027]

[0028] In Table 1, X represents the number of bytes occupied by the user data after the output of the contour information of all oil spill areas is completed.

[0029] The oil spill image sent by the infrared transmitter is a 320*256 image, and the oil spill region contour data sent by the infrared thermal imager is in the format of bytes, data content and data type; the data content includes: the number of oil spill regions, oil region number, confidence (0-100), centroid direction (unit: °), centroid distance (unit: m), centroid coordinates, centroid drift speed (unit: m / s), area (unit: m 2 ), area change rate (unit: m 2 / s), contour point number, contour point image coordinates, contour point longitude and latitude (unit: °). The data format in this embodiment is shown in Table 2.

[0030] Table 2: Infrared oil spill detection data format

[0031]

[0032]

[0033] In Table 2, X represents the number of bytes occupied by user data after the contour information of all oil spill regions is output.

[0034] As shown in Figure 1 , the radar oil spill detection display and control interface includes graphical display and list display, which displays the current oil spill detection information, the graphical display displays a gray scale image, and the list display displays the oil spill region contour data in Table 1. Figure 2 As shown in , the infrared oil spill detection display and control interface includes graphical display and list display, which displays the current oil spill detection information, the graphical display displays a gray scale image, and the list display displays the oil spill region contour data in Table 2.

[0035] In summary, the above is only a preferred embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for low network utilization implementation for oil spill detection system, characterized in that, The implementation method is: The image collected by the front-end detection device is converted into a gray-scale image, and the oil spill area contour data detected by the intermediate processing machine are respectively transmitted to the upper computer, and the upper computer superimposes the gray-scale image and the oil spill area contour data according to the frame number and then displays them on the display and control interface of the oil spill detection system; The front-end detection device includes an infrared thermal imager and a radar, the original video of the infrared thermal imager is frame-extracted and transmitted, and the transmission rate is lower than the collection rate; the collection rate of the radar is 1-5 frames / s, and the transmission rate is consistent with the collection rate; The oil spill area contour data transmitted by the radar and received by the upper computer adopts the format of bytes, data content and data type; wherein the data content includes the number of oil spill areas, oil area number, confidence, centroid direction, centroid distance, centroid coordinates, centroid drift speed, area, area change rate, contour point number, contour point image coordinates, and contour point longitude and latitude; The oil spill area contour data transmitted by the infrared thermal imager and received by the upper computer adopts the format of bytes, data content and data type; wherein the data content includes the number of oil spill areas, oil area number, confidence, centroid direction, centroid distance, centroid coordinates, centroid drift speed, area, area change rate, contour point number, contour point image coordinates, and contour point longitude and latitude.

2. The method for achieving low network utilization for an oil spill detection system of claim 1, wherein, The display and control interface includes a graphic display and a list display, the graphic display displays the gray-scale image, and the list display displays the oil spill area contour data.

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