A detection and early warning method for floating hazardous chemicals in coastal waters based on near-ultraviolet image processing

Abstract

The invention discloses a near-ultraviolet image processing based detection and early-warning method for hazardous chemical substances in an off-shore marine site. The method comprises a training preparation stage and a detection and early warning stage. The training preparation stage comprises obtaining and synthesizing training images, preprocessing and marking the images, training a model and preparing a panoramic map. The detection and early warning stage comprises obtaining a detection image, preprocessing the detection image, detecting and determining a target area, GPS matching, image fusion and graded early warning. A rapid deep neural network confidence detection model is established for the hazardous chemical substances in the near-ultraviolet image, the fact that the reflectivity of a colorless hazardous chemical substance is obviously different from that of water in the near ultraviolet band is utilized fully, and the difficulty in carrying out imaging detection on the floating hazardous chemical substance due to colorlessness is overcome; and GPS information matches the panoramic map for the image which is determined to include the floating hazardous chemical substance, the images, including the hazardous chemical substances, with adjacent sequential numbers are spliced and fused, much fewer images with the hazardous chemical substances need to be processed, and the method is characterized by being rapid, accurate and high-efficiency.

Description

technical field [0001] The invention relates to a detection and early warning method for floating hazardous chemicals, in particular to a detection and early warning method for floating hazardous chemicals in coastal waters based on near-ultraviolet image processing. Background technique [0002] With the development of the world's chemical industry, the transportation volume of hazardous chemicals has increased significantly in the past 20 years. The huge volume of water transportation of hazardous chemicals increases the risk of major pollution accidents. Water leakage accidents of hazardous chemicals include water transportation accidents, port warehouse accidents, and factory sewage. They are sudden and accidental, which makes emergency treatment difficult. Especially, leakage accidents in coastal waters pose a serious threat to public safety. [0003] At present, sensitive and accurate analytical techniques such as chromatography, spectrophotometry and electrochemical ...

AI Technical Summary

Problems solved by technology

However, compared to oil spill detection, hazardous chemicals (such as benzene, toluene, xylene, etc.) are often colorless liquids, and the color difference between them and water is much smaller than that of oil spills, and conventional image processing and classification methods cannot be used for effective detection At present, there are few studies on the classification and evaluation of the impact of hazardous chemicals on the marine environment, especially near-shore waters, and monitoring and emergency response, and there is still a lack of emergency response technology in this area

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