In allusion to the features of nightshade and weed, the author studied four nondimensional shape features, including aspect, first invariant moment, elongatedness and compactness, and diagrammatized, found that the optimal time for identification was 27~(th) after burgeoning.
针对茄科类作物和杂草的形状特征,作者提出宽长比、第一不变距、圆满度、致密度四个无量纲形状特征参数作为模式识别输入特征。
参考来源 - 基于机器视觉的茄科类作物与杂草的识别研究·2,447,543篇论文数据,部分数据来源于NoteExpress
以上来源于: WordNet
N any of various solanaceous plants, such as deadly nightshade, woody nightshade, and black nightshade 龙葵属植物
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