期刊论文

中文

浙江大学学报(农业与生命科学版)

1008-9209

2015

41

3

309-319

10.3785/j.issn.1008-9209.2014.06.231

2011NK3005:湖南省科技计划 2012NK4127:湖南省科技计划

本校为其他机构

为精确地度量柑橘品质分级,研究了病虫害为害状冰糖橙缺陷果实复杂性测度机器识别、脐橙果实周长-面积分形维数与分段色调单位坐标化多重分形谱高度/宽度的形状和颜色分级及糖酸度无损检测.对冰糖橙生理性缺硼、锈壁虱、油胞凹陷病3种常见病虫害果实为害状缺陷在0°-50°主色调区域实施长度为1°的分段,统计各分段色调区间像素分布概率,并计算统计复杂性测度C(y)与Shannon信息熵H(y),以C(y)与H(y)为检索词计算机查询果实病虫害检索表来进行病虫害缺陷果机器识别,平均正确识别率为93.33％.对脐橙果实果梗面与侧面在相垂直的2个投影面上的图像进行去背景与边界轮廓提取操作,计算边界轮廓周长-面积...

Summary Citrus quality grading can raise the observability degree and grade degree of citrus,improving the product level and increasing market competitiveness.It can also make huge economic and social benefits and increase farmers income and agricultural productivity so as to promote the sustained and healthy development of the citrusindustry.For the purpose of precise measurement of citrus quality grading,the complexity measurement of Bingtang orange defective fruit damaged by diseases and insect pest patterns were studied by machine recogniti...