Method for improving a test paper color cast correction effect by utilizing local correction

Abstract

The invention discloses a method for improving the color cast correction effect of test paper by utilizing local correction. The method comprises the following steps of: 1, acquiring a test paper strip image through a camera; 2, segmenting the image through a visual image processing module; 3, removing a blank area which may be influenced at the periphery of the test strip, and carrying out Gaussian filtering processing and labeling on the small image after the image to-be-detected area is cut; 4, calculating the average color cast mapping ratio and chromatic aberration values of the three peripheral color blocks; 5, reducing and calculating the color value of the reagent block by using the average color cast mapping ratio and the color difference value of the white block; 6, comparing andmatching the color value of the corrected reagent block with a preset color value to obtain a detection result; And the correction effect is more accurate and closer to a real result.

Description

technical field [0001] The invention relates to the technical field of test paper color shift correction, in particular to a method for improving the effect of test paper color shift correction by using local correction. Background technique [0002] Compared with going to a hospital for a urine test, using a test strip to perform a urine test reduces the cost of the test and saves the time of the test. It can be performed at home, which is convenient, time-saving, labor-saving, and money-saving. At present, the main method of urine testing is to dip the test paper into the urine, and the reagent block on the test paper reacts to cause a color change, and the corresponding symptoms are judged by the changed color. If the method of comparing the test paper with a camera or mobile phone is used, the color shift problem cannot be corrected accurately, making the color detection result inaccurate; The problem of inaccurate color cast correction due to factors such as uneven bri...

AI Technical Summary

Problems solved by technology

[0003] The traditional method of color shift correction is: within the scope of the whole map, perform color shift correction for the standard color block, and then apply the color shift coefficient to other reagent blocks in the whole map; Even this situation; when the illumination brightness is uneven, the color cast phenomenon in each local area is inconsistent, so using a uniform color cast coefficient will reduce the accuracy of the whole image correction and affect the detection results

Images