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http://dx.doi.org/10.14372/IEMEK.2015.10.1.13

Check4Urine: Smartphone-based Portable Urine-analysis System  

Cho, Jungjae (Daegu University)
Yoo, Joonhyuk (Daegu University)
Publication Information
IEMEK Journal of Embedded Systems and Applications / v.10, no.1, 2015 , pp. 13-23 More about this Journal
Abstract
Recently, a few image-processing based mobile urine testers have actively been studied since the urine-analysis result can be available to the user in real time immediately after the test is done. However, the accuracy of test result can be severely degraded due to variable illumination environments and a variety of manners to capture the image with a camera embedded in the smartphone according to different users. This paper proposes the Check4Urine system, a novel smartphone-based portable urine-analysis tester and provides three techniques to improve such a performance degradation problem robust to various test environments and disturbances, which are the compensation algorithm to correct the varying illumination effect, an urine strip detection algorithm robust to edge loss of the object image, and the color decision algorithm based on the pre-processed reference table. Experimental results show that the proposed Check4Urine system increases the accuracy of urine-analysis by 20-50% at various test conditions, compared with the existing image-processing based mobile urine tester.
Keywords
Portable urine tester; Edge detection; Corner detection; Color space;
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