机器视觉之Halcon算子--区域特征

H a l c o n算子--区域特征

当我们想要提取Region时，图像处理后，往往存在几个类似的Region，此时，需要根据Region的一

些特殊特征，来选择指定的Region。

求Region指定特征值：region_features(Regions : : Features : Value)

根据特征值选择区域：select_shape(Regions : SelectedRegions : Features, Operation, Min,

Max : )

Region特征一览：

特征英译备注area Area of the object 对象的面积

row Row index of the center 中心点的行坐标

column Column index of the center 中心点的列坐标

width Width of the region 区域的宽度

height Height of the region 区域的高度

row1 Row index of upper left corner 左上角行坐标

column1 Column index of upper left corner 左上角列坐标

row2 Row index of lower right corner 右下角行坐标

column2 Column index of lower right corner 右下角列坐标

circularity Circularity 圆度0~1 compactness Compactness 紧密度0~1 contlength Total length of contour 轮廓线总长

convexity Convexity 凸性

rectangularity Rectangularity 矩形度0~1 ra Main radius of the equivalent ellipse 等效椭圆长轴半径长度

rb Secondary radius of the equivalent ellipse 等效椭圆短轴半径长度

phi Orientation of the equivalent ellipse 等效椭圆方向

anisometry Anisometry 椭圆参数，Ra/Rb长轴与短轴的比值

bulkiness Bulkiness 椭圆参数，蓬松度π*Ra*Rb/A

struct_factor Structur Factor? 椭圆参数，

Anisometry*Bulkiness-1

outer_radius Radius of smallest surrounding circle 最小外接圆半径inner_radius Radius of largest inner circle 最大内接圆半径

inner_width Width of the largest axis-parallel rectangle that

fits into the region

最大内接矩形宽度

inner_height Height of the largest axis-parallel rectangle

that fits into the region

最大内接矩形高度

dist_mean Mean distance from the region border to the

center

区域边界到中心的平均距离

dist_deviation Deviation of the distance from the region

border from the center

区域边界到中心距离的偏差

roundness Roundness 圆度，与circularity计算方法不同num_sides Number of polygon sides 多边形边数

connect_num Number of connection components 连通数

holes_num Number of holes 区域内洞数

area_holes Area of the holes of the object 所有洞的面积

max_diameter Maximum diameter of the region 最大直径

orientation Orientation of the region 区域方向

euler_number Euler number 欧拉数，即连通数和洞数的差

rect2_phi Orientation of the smallest surrounding

rectangle

最小外接矩形的方向

rect2_len1 Half the length of the smallest surrounding

rectangle

最小外接矩形长度的一半？？smalle

rect2_len2 Half the width of the smallest surrounding

rectangle

最小外接矩形宽度的一半

moments_m11 Geometric moments of the region 几何矩moments_m20 Geometric moments of the region 几何矩moments_m02 Geometric moments of the region 几何矩moments_ia Geometric moments of the region 几何矩moments_ib Geometric moments of the region 几何矩moments_m11_invar Geometric moments of the region 几何矩moments_m20_invar Geometric moments of the region 几何矩moments_m02_invar Geometric moments of the region 几何矩