Computer Vision System For Ginseng Drying

Computer Vision System For Ginseng Drying

by Alex Martynenko


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A control system for multi-stage ginseng drying, based on real-time identification of moisture and quality changes, was developed. Computer-vision system provided real-time imaging of area shrinkage and colour changes. Shrinkage was identified by extracting of the green plane from the RGB color space, while colour changes- from the HSI color space. Shrinkage-moisture and colour-quality relationships were experimentally developed over the entire range of drying conditions in isothermal and non-isothermal drying.
Relational models were used as components of control system. Data from computer vision system were used to generate relevant signals to low-level controller for temperature adjustment according to actual moisture content and quality. It enabled to start drying with the predictive model and then re-evaluate the drying conditions on the basis of feedback information from computer-vision system. Testing of a pilot batch dryer with an embedded virtual controller showed robustness and reliability of control, which provided drying to target moisture content 0.1 g/g (db) with high-standard quality.

Product Details

ISBN-13: 9783639024500
Publisher: VDM Verlag Dr. Mueller e.K.
Publication date: 05/19/2008
Pages: 200
Product dimensions: 6.00(w) x 9.00(h) x 0.42(d)

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