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水轮机叶形现场检测机械臂运动学研究
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作者 吴万荣 黄志雄 +1 位作者 龚艳玲 吴媚芳 《机械与电子》 2002年第5期48-50,共3页
介绍水轮机叶形检测多关节机械臂的主要结构特点及其工作原理。采用DH法建立该多关节机械臂完整的运动学模型,并给出了在各种情况下的运动学逆解。仿真结果证明了该运动学模型的正确性,逆解的完备性。
关键词 运动学 机械臂 水轮机 叶形检测 现场检测
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Pest Detection Method Using Multi-Fractal Analysis 被引量:3
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作者 Yun-Ki KIM Jang-myung LEE 《Journal of Measurement Science and Instrumentation》 CAS 2011年第3期240-243,共4页
A novel method for pest detection is proposed based on the theory of multi-fractal spectrum to extract pests on plant leaves.Both local and global information of the image regularity were obtained by multi-fractal ana... A novel method for pest detection is proposed based on the theory of multi-fractal spectrum to extract pests on plant leaves.Both local and global information of the image regularity were obtained by multi-fractal analysis.By applying fractal dimension,the spots on leaf images can be extracted without loosing or introducing any information.The different parts of images are re-analysis by morphology operations to determine the candidate regions of pests.The performance of multi-fractal analysis of whitefly detection is investigated through greenhouse experiments.The experimental results show that the proposed method is robust to noise from light and is not sensitive to the complex environment. 展开更多
关键词 multi-fractal analysis image segmentation pest detection
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