| 差分百分率直方图法提取缺素叶片纹理特征 |
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| 引用本文： | 徐贵力,毛罕平,李萍萍.差分百分率直方图法提取缺素叶片纹理特征[J].农业机械学报,2003,34(2):76-79. |
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| 作者姓名： | 徐贵力 毛罕平 李萍萍 |
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| 作者单位： | 1. 南京航空航天大学测试工程系,210016,南京市
2. 江苏大学机械工程学院,212013,镇江市 |
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| 基金项目： | 江苏省自然科学基金项目 (项目编号 :BK2 0 0 10 89 |
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| 摘 要： | 针对基于计算机视觉技术对无土栽培番茄缺乏营养元素智能识别研究中，如何提取缺素叶片纹理特征问题，提出了差分百分率直方图法。特征有效性不受叶片大小、形状差异和叶片图像中叶片周边白色背景的影响，实验验证该方法能较好地提取出缺素叶片纹理特征，最后利用K－的邻模式识别法进行模式识别，识别的准确率在80％以上。
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| 关 键 词： | 信息处理技术 番茄 叶 差分 提取纹理特征 |
| 修稿时间： | 2002年3月5日 |
Research on Extraction Leaf Texture Features as Sample of Nutrient Shortage by Percent Histogram of Differentiation |
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| Xu Guili.Research on Extraction Leaf Texture Features as Sample of Nutrient Shortage by Percent Histogram of Differentiation[J].Transactions of the Chinese Society of Agricultural Machinery,2003,34(2):76-79. |
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| Authors: | Xu Guili |
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| Institution: | Xu Guili(Nanjing University of Aeronautics and Astronautics) Mao Hanping Li Pingping(Jiangsu University) |
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| Abstract: | In this paper, the percent histogram of differentiation was put forward in order to extracting texture feature of tomato's leaves in soiless agriculture for diagnosing diseases intellectively that were short of a kind of nutrient. The better suitable differentiating operator was studied by analyzing and tests. The method can get rid of the disturbance of the white background noises in the leaf image by dealing with the histogram, and remove the interferes of leaf's size by changing the histogram into percent histogram. At the same time the influence of shape was put out in the histogram. The way of looking for the better differentiation position in percent histogram for extracting effective texture feature was researched. The experimental results of extracting texture feature of the tomato's leaves proved that the method was effective in separating the tomato's different kinds of leaves, and the result of experiment showed that the accuracy is above 80%. |
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| Keywords: | Information processing technology Tomatoes Leaves Difference Extracting texture feature |
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