| Machine vision inspection of rice seed based on Hough transform |
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| 作者姓名： | 成芳 应义斌 |
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| 作者单位： | College of Biosystems Engineering and Food Science，Zhejiang University，College of Biosystems Engineering and Food Science，Zhejiang University Hangzhou 310029，China，Hangzhou 310029，China |
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| 基金项目： | Project supported by the National Natural Science Foundation ofChina (No. 60008001) and the Natural Science Foundation of Zhe-jiang Province (No. 300297), China |
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| 摘 要： | INTRODUCTION It is a common phenomenon that glumes ofrice seeds are incompletely closed, especially forhybrid rice. The average proportion of hybrid riceseed with incompletely closed glumes is about 26%in nature. The threshing and drying in post-harvesthandling will further increase the proportion. Thegermen segmentation is inhibited by ultravioletillumination from sunshine while the germen epi-dermis cell stops growing because of shortage ofwater due to the limited moisture. These …
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Machine vision inspection of rice seed based on Hough transform |
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| CHENG Fang,YING Yi-bin.Machine vision inspection of rice seed based on Hough transform[J].Journal of Zhejiang University Science,2004(6). |
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| Authors: | CHENG Fang YING Yi-bin |
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| Abstract: | A machine vision system was developed to inspect the quality of rice seeds. Five varieties of Jinyou402, Shanyou10, Zhongyou207, Jiayou and IIyou were evaluated. The images of both sides of rice seed with black background and white background were acquired with the image processing system for identifying external features of rice seeds. Five image sets consisting of 600 original images each were obtained. Then a digital image processing algorithm based on Hough transform was developed to inspect the rice seeds with incompletely closed glumes. The algorithm was implemented with all image sets using a Matlab 6.5 procedure. The results showed that the algorithm achieved an average accuracy of 96% for normal seeds, 92% for seeds with fine fissure and 87% for seeds with incompletely closed glumes. The algorithm was proved to be applicable to different seed varieties and insensitive to the color of the background. |
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| Keywords: | Hough transform Incompletely closed glumes Rice seed Machine vision |
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