Rapid bio-test strips reader with image processing technology
Abstract:We present an algorithm of automatic vision inspection to solve the problems in a rapid bio-test strips reader. The image inspection area of a rapid bio-test strip includes control line testing zone, test line testing zone, and the assist-measuring zone of reference. By determining the central line of control line testing zone, we can calculate the central line of test line testing zone, and can calculate the characteristics of control line, test line and the reference light-field out further. We set different threshold values for each division for the different light-field to identify whether the reaction has occurred or not. The number of pixels in positive condition is usually less than that in negative condition for the divisions in the testing zone. In this bio-strips reader we can acquire the result within 0.3 seconds computer judgment after specimen rose to test line in 10–15 minutes.
Document Type: Research Article
Publication date: October 1, 2004