Test paper detecting method with various light intensity and various colors for illumination
A detection method and technology of light intensity, which are applied in image enhancement, material analysis by observing the influence of chemical indicators, image data processing, etc., can solve the problems of detection environment deviation, yellowing of reference background, and achieve accurate restoration , the effect of reducing noise and background yellowing, and increasing the number of sample images
Active Publication Date: 2019-06-07
深圳市象形字科技股份有限公司
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[0011] The object of the present invention is to aim at the defects and deficiencies of the prior art, to provide a test paper detection method using multiple light intensities and multiple colors of lighting, and to analyze images under different color situations by collecting multiple times, which can avoid In the image acquisition, due to the high or low brightness of the light, the yellowing of the reference background color of the test paper due to the time relationship, and the light interference in the detection environment, the detection results are deviated, and the detection accuracy is improved.
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[0027] Below in conjunction with accompanying drawing, the present invention will be further described.
[0028] see figure 1 Shown, the technical solution that this specific embodiment adopts is: it comprises the following steps:
[0029] 1. Set a light source with adjustable brightness and changeable color in the testing equipment to form different lighting environments; the brightness of the light source can be changed into three levels, namely high brightness, medium brightness and low brightness; the color of the light source can be changed into four types, They are white light, red light, green light, and blue light respectively, that is, there are 3*4=12 lighting environments under this condition;
[0030] 2. After placing the test strip into the card slot and pushing it into the detection device, keep the dark and opaque conditions, first turn on the low-brightness white light, and then turn it into medium-brightness white light, high-brightness white light, and low-b...
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The invention discloses a test paper detecting method with various light intensity and various colors for illumination. The method comprises: step one, setting a light source with the adjustable brightness and changeable colors in a detection device; step two, opening different lighting environments successively at a fixed time interval and collecting each kind of image by a camera to obtain imageinformation of a piece of test paper in different contexts; step three, carrying out segmentation and Gaussian filtering on the image in each context by using a visual image processing module; step four, carrying out color cast correction on a segmented reagent block by using the visual image processing module; and step five, carrying out comparison and analysis on RGB average values after correction of all reagent block samples on the test paper images in different illumination environments and a preset standard reference color RGB value in a memory to obtain corresponding suspected diseaseinformation. According to the invention, after multi-times collection of images in different color contexts and analysis of the images, the offset of the detection result is avoided and thus the detection accuracy is improved.
Description
technical field [0001] The invention relates to a test paper detection method, in particular to a test paper detection method utilizing multiple illumination intensities and multiple color illuminations. Background technique [0002] Urine testing is of great significance for the prevention and detection of chronic kidney disease. According to the results of the epidemiological survey in China, the prevalence rate of chronic kidney disease in Chinese adults is 10.8%, and the total number is as high as 120 million, that is, there is 1 chronic kidney disease in every 10 people on average. For patients with kidney disease, it is increasingly important to strengthen the prevention and control of chronic kidney disease through urine testing; [0003] Urine testing with test strips has the advantages of saving time, labor, money, and convenience compared to the traditional urine analysis at the hospital. It can be done at home and has become a trending choice for urine testing; ...
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IPC IPC(8): G01N21/78G06T7/00G06T7/90G06T5/00
Inventor 陈波邓宏平杜伟杰刘婷方占
Owner 深圳市象形字科技股份有限公司