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| 基于机器视觉的苹果识别和形状特征提取 | |
| 引用本文： | 司永胜,乔军,刘刚,刘兆祥,高瑞.基于机器视觉的苹果识别和形状特征提取[J].农业机械学报,2009,40(8). |
| 作者姓名： | 司永胜 乔军 刘刚 刘兆祥 高瑞 |
| 作者单位： | 1. 中国农业大学现代精细农业系统集成研究教育部重点实验室,北京100083;河北农业大学信息科学与技术学院,保定071001 2. 中国农业大学网络中心,北京,100083 3. 中国农业大学现代精细农业系统集成研究教育部重点实验室,北京,100083 |
| 基金项目： | 国家"863"高技术研究发展计划资助项目 |
| 摘 要： | 提出了利用色差R-G和色差比(R-G)/(G-B)相结合的苹果识别方法.在顺光、逆光等不同情况下对拍摄的苹果图像进行了识别,并对识别后的图像进行消除噪声、区域填充等预处理,获得苹果的轮廓图像.针对轮廓图像,采用遗传算法进行形状特征提取.采取多次运行遗传算法,并依次转换目标轮廓点为背景点的方法,处理果实图像邻接、重叠问题.实验结果表明:苹果识别方法在一定程度上消除了阴影、逆光、土壤等影响,识别率达97%.基于遗传算法的形状特征提取方法,可对邻接、重叠图像进行有效分割,快速、准确地实现苹果图像圆心坐标和半径的提取. |
| 关 键 词： | 苹果 机器视觉 图像识别 遗传算法 特征提取 |
Recognition and Shape Features Extraction of Apples Based on Machine Vision |
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| Si Yongsheng,Qiao Jun,Liu Gang,Liu Zhaoxiang,Gao Rui.Recognition and Shape Features Extraction of Apples Based on Machine Vision[J].Transactions of the Chinese Society of Agricultural Machinery,2009,40(8). | |
| Authors: | Si Yongsheng Qiao Jun Liu Gang Liu Zhaoxiang Gao Rui |
| Institution: | 1.Key Laboratory of MOE on Modern Precision Agriculture System Integration Research;China Agricultural University;Beijing 100083;China 2.College of Information Science & Technology;Agricultural University of Hebei;Baoding 071001;China 3.Network Centre;China |
| Abstract: | An apple recognition method with color difference R-G and color difference ratio(R-G)/(GB) was presented.The apples in the images taken under frontlighting and backlighting conditions were recognized.The contour images were gained through the pretreatments such as noise removal,area filling etc.Shape features were extracted from the contour images based on genetic algorithm(GA).For the clustered or overlapped apples,the method of multiple running GA and converting the contour points of every apple into back... |
| Keywords: | Apple Machine vision Image recognition Genetic algorithm Feature extraction |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |