Code
直線卡尺
* 獲取圖像及圖像尺寸
dev_close_window ()
read_image (Image, 'fabrik')
get_image_size (Image, Width, Height)
dev_open_window_fit_image (Image, 0, 0, -1, -1, WindowHandle)
dev_set_line_width (1)
dev_display (Image)
* 標記測量位置
draw_line (WindowHandle, Row1, Column1, Row2, Column2)
LineParams := [Row1, Column1, Row2, Column2]
* 創建測量句柄
create_metrology_model (MetrologyHandle)
* 添加測量對象
set_metrology_model_image_size (MetrologyHandle, Width, Height)
add_metrology_object_generic (MetrologyHandle, 'line', LineParams, 20, 3, 1, 30, [], [], Index)
* 設置測量對象的參數
* set_metrology_object_param (MetrologyHandle, 'all', 'measure_transition', 'negative')
* set_metrology_object_param (MetrologyHandle, 'all', 'num_measures',10)
* set_metrology_object_param (MetrologyHandle, 'all', 'num_instances', 1)
* set_metrology_object_param (MetrologyHandle, 'all', 'measure_sigma', 1)
* set_metrology_object_param (MetrologyHandle, 'all', 'measure_length1', 20)
* set_metrology_object_param (MetrologyHandle, 'all', 'measure_length2', 5)
* set_metrology_object_param (MetrologyHandle, 'all', 'measure_threshold',30)
* set_metrology_object_param (MetrologyHandle, 'all', 'measure_interpolation', 'bicubic')
* set_metrology_object_param (MetrologyHandle, 'all', 'measure_select', 'all')
* set_metrology_object_param (MetrologyHandle, 'all', 'min_score', 0.7)
* 執行測量，獲取邊緣點集
dev_set_color ('yellow')
apply_metrology_model (Image, MetrologyHandle)
get_metrology_object_measures (Contours, MetrologyHandle, 'all', 'all', Row, Column)
dev_set_color ('red') gen_cross_contour_xld (Cross, Row, Column, 6, 0.785398)
* 獲取最終測量數據和輪廓線
dev_set_color ('green')
dev_set_line_width (2)
get_metrology_object_result (MetrologyHandle, 'all', 'all', 'result_type', 'all_param', Parameter)
get_metrology_object_result_contour (Contour, MetrologyHandle, 'all', 'all', 1.5)
* 釋放測量句柄
clear_metrology_model (MetrologyHandle)
Explanation
set_metrology_model_image_size( : : MetrologyHandle, Width, Height : )
使用 set_metrology_model_image_size 該算子設置測量區域，而且該算子必須在 add_metrology_object_generic 這類添加測量對象的算子之前調用，否則在使用 apply_metrology_model 執行測量時會重新計算測量區域，降低效率。
add_metrology_object_generic( : : MetrologyHandle, Shape, ShapeParam, MeasureLength1, MeasureLength2, MeasureSigma, MeasureThreshold, GenParamName, GenParamValue : Index)
參數 Shape 和 ShapeParam 是聯動的：
- Shape = circle 時，ShapeParam=[Row, Column, Radius]
- Shape = rectangle2 時，ShapeParam=[Row, Column, Phi, Length1, Length2]
- Shape = ellipse 時，ShapeParam=[Row, Column, Phi, Radius1, Radius2]
- Shape = line 時，ShapeParam=[RowBegin, ColumnBegin, RowEnd, ColumnEnd]
set_metrology_object_param( : : MetrologyHandle, Index, GenParamName, GenParamValue : )
創建測量區域的相關參數
- measure_length1：The value of this parameter specifies the half length of the measure regions perpendicular to the metrology object boundary.
- measure_length2：The value of this parameter specifies the half length of the measure regions tangential to the metrology object boundary.
- measure_distance：The value of this parameter specifies the desired distance between the centers of two measure regions.
- num_measures：The value of this parameter specifies the desired number of measure regions.
提取邊緣的相關參數
- measure_sigma：The parameter specifies the sigma for the Gaussian smoothing.
- measure_threshold：The parameter specifies the minimum edge amplitude.
- measure_select：The parameter specifies the selection of end points of the edges.
- measure_transition：The parameter specifies the use of dark/light or light/dark edges.
- measure_interpolation：The parameter specifies the type of interpolation to be used.
擬合幾何形狀的相關參數
- min_score： The parameter determines what score a potential instance must at least have to be regarded as a valid instance of the metrology object.
- num_instances： The parameter specifies the maximum number of successfully fitted instances of each metrology object after which the fitting will stop.
- distance_threshold： apply_metrology_model uses a randomized search algorithm (RANSAC) to fit the geometric shapes.
- max_num_iterations： The RANSAC algorithm estimates the number of iterations necessary for fitting the requested geometric shape.
- rand_seed： The parameter specifies the seed for the random number generator for the RANSAC algorithm that is used by the selection of the edges the in operator apply_metrology_model.
- instances_outside_measure_regions： The parameter specifies the validation of the results of measurements.