Device and method for measuring concentration of marine suspended particulate matter based on digital image processing

Abstract

The invention provides a device and method for measuring the concentration of marine suspended particulate matter based on digital image processing. Based on the principle of different reflectivity of seawater and marine suspended particulate matter to light, a set of marine suspended particulate matter based on digital image processing technology is established by using digital image processing technology. The particulate matter concentration measurement device and the ocean suspended particulate matter image eigenvalue algorithm used to characterize the ocean suspended particulate matter concentration, the algorithm extracts the ocean suspended particulate matter image feature value, and the ocean suspended particulate matter image feature value can realize the inversion of the true concentration of the ocean suspended particulate matter. This method attempts to apply digital image processing technology to the measurement of the concentration of suspended particulate matter in the ocean. Its measurement accuracy only depends on the shooting accuracy of the measurement device and the improvement of subsequent algorithms, which can overcome its susceptibility to the particle size and particle size distribution of suspended particulate matter in the ocean. At the same time, it has the advantages of intuition, continuous observation and easy operation, and has broad application prospects in marine surveys.

Description

technical field [0001] The invention belongs to the technical field of marine hydrological observation, and in particular relates to a device and method for measuring the concentration of suspended particulate matter in the ocean based on digital image processing. Background technique [0002] Marine suspended particulate matter generally refers to substances in seawater that cannot pass through the filter membrane, including organic components as biological sources and inorganic components such as suspended sediment. Marine suspended particulate matter has dual ecological effects. On the one hand, it serves as a place for microbial decomposition, releasing inorganic nitrogen and inorganic salts to the water body; The photosynthesis of plants, so the concentration of suspended particulate matter in the ocean affects the primary productivity in the ocean to a certain extent. Moreover, marine suspended particulate matter is an important factor for in-depth understanding of ma...

AI Technical Summary

Problems solved by technology

This optical-based measurement method is easily affected by dissolved substances in seawater, and the attenuation or reflection of the beam will be lost to a certain extent, resulting in certain errors in the measurement results; Substances are more sensitive, and turbidimeters are more sensitive to fine particles, so the uneven distribution of particle sizes in the ocean always affects the accuracy of measurement results; in addition, biological factors also often affect the accuracy of optical measurements, making measurement results There is an error

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