High-Quality Image capturing system of Agricltural Products using Two Polarizing Filters

• Project/Area Number: 24580383
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Agricultural information engineering
• Research Institution: National Agriculture and Food Research Organization
• Principal Investigator: Kentaro Nishiwaki 国立研究開発法人農業・食品産業技術総合研究機構, 北海道農業研究センター・大規模畑作研究領域, 上級研究員 (40355269)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 偏光フィルタ / 農産物 / ハレーション / 画像処理 / マシンビジョン / 鏡面反射 / HSIカラースペース

Outline of Final Research Achievements

An image capturing system that use two polarizing filter was proposed to realize rapid and precise non-destructive quality measuring system for agricultural products. Various agricultural products are captured and analyzed in this study. From the results, it was observed that the polarizing filtering technique was useful to capture high quality image that specular reflected rights were eliminated. The system was operational under outdoor condition where the system relay on the Sun for its light source, and the angle tolerance for the two filter varied according to a kind of agricultural products. Research results are expected to increase added value of agricultural products, and lead to improve international competitiveness of domestic agriculture.