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http://dx.doi.org/10.5369/JSST.2002.11.2.093

Citrus sorting system with a color image boundary tracking  

Choi, Youn-Ho (School of Electronic & Electrical Engineering., Kyungpook National University)
Kwon, Woo-Hyen (School of Electronic & Electrical Engineering., Kyungpook National University)
Publication Information
Journal of Sensor Science and Technology / v.11, no.2, 2002 , pp. 93-101 More about this Journal
Abstract
The quality of agricultural products is classified with various factors which are measured and determined by destructive and/or nondestructive method. NIR spectrum analysis method is used to determine internal qualities such as a brix and an acidity. CCD color camera is used to measure external quality like color and a size of fruit. Today, nondestructive methods are widely researched. The quality and the grade of fruit loaded into a cup automatically and measured in real time by camera and NIR system is determined by infernal and external factors. This paper proposes modified boundary tracking algorithm which detects the contour of fruit's color image and make chain code faster than conventional method. The chain code helps compute a size of fruit image and find multiple loading of a fruit in single cup or fruit between two cups. The designed classification system sorts a citrus at speed of 8 fruit/s, with evaluating a brix, an acidity and a size grade.
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