Urinalysis test paper reaction color analysis method

Abstract

The invention discloses a urinalysis test paper reaction color analysis method. The method disclosed by the invention comprises the following steps: acquiring a urine test paper image containing a to-be-tested urine test paper storage area; marking light environment characteristics in the detection process and color characteristics of a camera shooting device by utilizing urine test paper blank; marking the light environment characteristics in the detection process and the color characteristics of the camera shooting device by utilizing a test paper storage area background with a given color; acquiring the color data of the to-be-tested urine test paper under the color characteristics of different light environments and different mobile phone cameras. According to the method disclosed by the invention, the interference of differences of different light environments and camera shooting devices can be eliminated, and the accurate and reliable urinalysis result can be obtained with low cost.

Description

technical field [0001] The invention relates to a reaction color analysis method of urine test paper. Background technique [0002] At present, urine biochemical analysis is more and more widely used in the medical field as disease diagnosis, disease prevention and general health check. Urine biochemical analysis methods mainly include liquid chromatography, urine sediment microscopic analysis and dry chemical method. Liquid chromatography is expensive in equipment and complex in operation and data analysis. It is generally used in the analysis of urine metabolomics; the sample preparation process for microscopic analysis of urine sediment is cumbersome and inefficient. Analysis; the dry chemical method is to use the dry chemical reagents adsorbed on the test paper to react with the routine inspection items in the urine to cause a color change, and determine the concentration of the corresponding chemical components in the urine according to the degree of color change. The...

AI Technical Summary

Problems solved by technology

However, due to the different sensors, lens parameters and image processing algorithms of different brands of smart phones, or different batches of the same brand and different models of smart phones, their color output characteristics are quite different. The data are different. At present, the calibration method is often used to obtain the conversion coefficient from the RGB space to the CIE chromaticity system. However, the number of smartphone models is huge, and the sensors, lens parameters, and image processing algorithms vary widely, which makes the calibration work very complicated and difficult to cover most User needs

[0005] In addition, when a user uses a smartphone to take pictures of urine test strips for color analysis, even after calibration of the smartphone, there are large differences in the color data obtained in different lighting environments, especially the color of the test strips under sunlight and light backgrounds. significant difference

The color difference of the captured image will lead to unstable urine color analysis results, affecting the accuracy and reliability of the test results

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