Shape template matching based on Halcon learning [VII] reuse_ model. Hdev routine

This sample program shows how to reuse the created model .

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 1、 Read the picture

dev_update_window ('off')
* Read the picture 
read_image (ModelImage, 'rings_and_nuts')

* Get a channel Pointer（ Indicator ）
get_image_pointer1 (ModelImage, Pointer, Type, Width, Height)
dev_close_window ()
dev_open_window (0, 0, Width, Height, 'white', WindowHandle)
dev_set_part (0, 0, Height - 1, Width - 1)
dev_display (ModelImage)

* Set some column parameters 
dev_set_color ('cyan')
dev_set_draw ('margin')
dev_set_line_width (2)
set_display_font (WindowHandle, 14, 'mono', 'true', 'false')
disp_continue_message (WindowHandle, 'black', 'true')
stop ()

2、 Create a template  

* Create a template 
Row := 324
Column := 279
Radius := 60
gen_circle (ROI1, Row, Column, Radius)
gen_circle (ROI2, Row, Column, 0.5 * Radius)
* Difference set 
difference (ROI1, ROI2, ModelROI)
* Cutout 
reduce_domain (ModelImage, ModelROI, ImageROI)

 

* Create a template 
create_scaled_shape_model (ImageROI, 'auto', -rad(30), rad(60), 'auto', 0.6, 1.4, 'auto', 'none', 'use_polarity', 60, 10, ModelID)
inspect_shape_model (ImageROI, ShapeModelImage, ShapeModelRegion, 1, 30)
dev_clear_window ()
dev_display (ShapeModelRegion)
disp_continue_message (WindowHandle, 'black', 'true')
stop ()

3、 The storage model （ Include XLD） 

ModelFile := 'model_nut.sbm'
* Save template 
write_shape_model (ModelID, ModelFile)

* Besides , We store the model area 
ModelRegionFile := 'model_region_nut.png'
write_image (ImageROI, 'png', 0, ModelRegionFile)

* Clear template 
clear_shape_model (ModelID)

4、 Read the model from the file  

read_shape_model (ModelFile, ReusedModelID)

* Access the parameters used to create the model 
get_shape_model_contours (ReusedShapeModel, ReusedModelID, 1)
get_shape_model_origin (ReusedModelID, ReusedRefPointRow, ReusedRefPointCol)
get_shape_model_params (ReusedModelID, NumLevels, AngleStart, AngleExtent, AngleStep, ScaleMin, ScaleMax, ScaleStep, Metric, MinContrast)

* Access model area 
read_image (ImageModelRegion, 'model_region_nut.png')
get_domain (ImageModelRegion, DomainModelRegion)
dev_display (ImageModelRegion)
dev_display (DomainModelRegion)
stop ()

5、 Search for

read_image (SearchImage, 'rings_and_nuts')
dev_display (SearchImage)
* Begin to match 
find_scaled_shape_model (SearchImage, ReusedModelID, AngleStart, AngleExtent, ScaleMin, ScaleMax, 0.65, 0, 0, 'least_squares', 0, 0.8, RowCheck, ColumnCheck, AngleCheck, ScaleCheck, Score)
for i := 0 to |Score| - 1 by 1
    * Affine transformation 
    vector_angle_to_rigid (ReusedRefPointRow, ReusedRefPointCol, 0, RowCheck[i], ColumnCheck[i], AngleCheck[i], MovementOfObject)
    hom_mat2d_scale (MovementOfObject, ScaleCheck[i], ScaleCheck[i], RowCheck[i], ColumnCheck[i], MoveAndScalingOfObject)
    affine_trans_contour_xld (ReusedShapeModel, ModelAtNewPosition, MoveAndScalingOfObject)
    dev_display (ModelAtNewPosition)
endfor
disp_continue_message (WindowHandle, 'black', 'true')
stop ()

6、 Clear template

clear_shape_model (ModelID)