【issue-halcon例程学习】measure_arc.hdev
例程功能
检查倒角后铸件的细长孔之间的距离。
代码如下
read_image (Zeiss1, 'zeiss1')
get_image_size (Zeiss1, Width, Height)
dev_close_window ()
dev_open_window (0, 0, Width / 2, Height / 2, 'black', WindowHandle)
set_display_font (WindowHandle, 14, 'mono', 'true', 'false')
dev_display (Zeiss1)
disp_continue_message (WindowHandle, 'black', 'true')
stop ()
* draw_circle (WindowHandle, Row, Column, Radius)
Row := 275
Column := 335
Radius := 107
AngleStart := -rad(55)
AngleExtent := rad(170)
dev_set_draw ('fill')
dev_set_color ('green')
dev_set_line_width (1)
get_points_ellipse (AngleStart + AngleExtent, Row, Column, 0, Radius, Radius, RowPoint, ColPoint)
disp_arc (WindowHandle, Row, Column, AngleExtent, RowPoint, ColPoint)
dev_set_line_width (3)
gen_measure_arc (Row, Column, Radius, AngleStart, AngleExtent, 10, Width, Height, 'nearest_neighbor', MeasureHandle)
disp_continue_message (WindowHandle, 'black', 'true')
stop ()
count_seconds (Seconds1)
n := 10
for i := 1 to n by 1
measure_pos (Zeiss1, MeasureHandle, 1, 10, 'all', 'all', RowEdge, ColumnEdge, Amplitude, Distance)
endfor
count_seconds (Seconds2)
Time := (Seconds2 - Seconds1) / n
disp_continue_message (WindowHandle, 'black', 'true')
* stop ()
distance_pp (RowEdge[1], ColumnEdge[1], RowEdge[2], ColumnEdge[2], IntermedDist)
* dev_display (Zeiss1)
dev_set_color ('red')
* disp_circle (WindowHandle, RowEdge, ColumnEdge, RowEdge - RowEdge + 1)
disp_line (WindowHandle, RowEdge[1], ColumnEdge[1], RowEdge[2], ColumnEdge[2])
dev_set_color ('yellow')
disp_message (WindowHandle, 'Distance: ' + IntermedDist, 'image', 250, 80, 'yellow', 'false')
* dump_window (WindowHandle, 'tiff_rgb', 'C:\\Temp\\zeiss_result')
dev_set_line_width (1)
* disp_continue_message (WindowHandle, 'black', 'true')
stop ()
dev_clear_window ()
要点
gen_measure_arc——采用圆弧arc作为测量区域，这是和上个例程不同的地方；
CenterRow：入参，圆弧中心的行坐标；
CenterCol：入参，圆弧中心的纵坐标；
Radius：入参，圆弧半径；
AngleStart：入参，弧度的起始角)以弧度为单位)；
AngleExtent：入参，弧度的角范围(以弧度为单位)；
AnnulusRadius：入参，圆弧环形半径；
Width：入参，待处理图像的宽度；
Height：入参，待处理图像的高度；
Interpolation：入参，插值的形式；
MeasureHandle：出参，测量对象句柄；measure_pos——提取垂直于矩形或环形弧的直边；
Image：入参，输入图片；
MeasureHandle：入参，测量对象句柄；
Sigma：入参，高斯模糊参数；
Threshold：入参，最小边沿振幅；
Transition：入参，亮/暗或暗/亮边缘；
Select：入参，终点选择；
RowEdge：出参，边缘的中心行值(纵坐标)；
ColumnEdge：出参，边缘的中心列值(横坐标)；
Amplitude：出参，边的边缘振幅(带符号)；
Distance：出参，连续边之间的距离；measure_pos返回的是一个数组，索引1为最小值，索引2为最大值，示例代码中用distance_pp取点计算了最短距离
measure_pos (Zeiss1, MeasureHandle, 1, 10, 'all', 'all', RowEdge, ColumnEdge, Amplitude, Distance)
distance_pp (RowEdge[1], ColumnEdge[1], RowEdge[2], ColumnEdge[2], IntermedDist)