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摘要: 利用机器视觉技术把杂草精确识别出来是精细农业领域研究的热点问题之一。针对杂草与小麦叶子交叠的情况,提出一种综合颜色和形态特征的方法进行杂草识别。在L*a*b*颜色空间,选取a*作为特征量并用改进的最大类间方差法进行阈值分割获得植物图像;在HSI颜色空间,利用多层的同质性分割算法分离小麦与杂草;结合形态学特征开闭运算滤波及二值逻辑与运算获得杂草图像;模拟化学除草系统,从理论上评价整个系统的识别效率。实验结果表明:杂草正确识别率高达92.6%以上,且除草剂的使用量减少超过72.4%。