摘要
在用迭代阈值法分割图像的基础上,对飞虱图像的几何形状特征和不变矩的提取及测量进行了研究。提取了4项稳定性较高的相对特征,包括延长度、球状性、叶状性和似圆度,而与周长有关的参数不适合描述形态特征,误差较大的不变矩参数也不宜作为描述的依据。
Basic method of feature measuring and extraction of shape feature and moment invariant were studied based on delphacidae binary images segmented with iteration thresholding method. Four relative features with higher stability were extracted, including elongation, sphericity, lobation, roundness, and parameters related with perimeter are not suitable to describe shape feature. Moreover, moment invariants with larger error can not also be used as basis for description.
出处
《农机化研究》
北大核心
2008年第6期180-183,共4页
Journal of Agricultural Mechanization Research
关键词
水稻飞虱
图像分割
形状特征
矩不变量
paddy delphacidae
image segmentation
shape feature
moment invariant
