Method for detecting sample substance concentration based on test paper image recognition

Abstract

The invention relates to the technical field of test paper color analysis, and particularly relates to a method for detecting sample substance concentration based on test paper image recognition. Themethod specifically comprises the steps of adding a sample, and collecting an image; carrying out normalization processing, and segmenting a detection item area; segmenting a blank test paper area; extracting color parameter values of the segmented images of the detection item area and the blank test paper area, and performing comparative analysis; inputting analysis results into a database, outputting a sample substance concentration value of each detection item. According to the method, the concentration of chemical substances in the sample can be output through image recognition and the technical principle of a reflection type photoelectric colorimetric method, and after the environmental parameter consistency and normalization processing at the shooting moment, the other environmentalfactors possibly influencing the output result are eliminated by a relative information comparison method, and the effectiveness of the output result is ensured without depending on the high consistency and stability of an optical component.

Description

technical field [0001] The invention relates to the technical field of test paper color analysis, in particular to a method for detecting the concentration of a sample substance based on test paper image recognition. Background technique [0002] The currently used urine test paper color analysis uses a urine dry chemical analyzer for analysis, which is composed of a reflection photometer, a microcomputer and a urine dry test strip that is compatible with the machine, and is mainly used for urine chemistry. Qualitative or semi-quantitative analysis of components, the urine dry chemical test strip widely used clinically is to attach (solid phase) reagents for detecting various components in urine to paper (or film) to make test paper (or dry film) ), the relative chemical composition in the urine causes the color of the reagent block on the test strip to change, and the color depth is proportional to the concentration of the corresponding substance in the urine. Each reagent ...

AI Technical Summary

Problems solved by technology

[0003] However, the current urine dry chemical analyzer requires a very stable and reliable light source, which must be used after strict spectral testing. During the use of the instrument, if the light source is aging, the test results of the instrument will have large deviations; and After a certain instrument is determined, it has been confirmed that the instrument can only use certain limited brands and specifications of urine dry chemical test strips; due to the difference between batches of urine test strips, there will be large deviations in the test results; in addition, the instrument Frequent calibration is required. Once a deviation is found, the technical personnel of the instrument manufacturer need to modify the hardware circuit parameters of the instrument or directly replace the optical accessories

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