Halcon模板匹配错误问题

模板误识别，超出搜索框，识别分数过高。find_shape_model匹配分数算法原理是什么。

创建模板参数：

1. HShapeModel(shapeXld, "auto", new HTuple(startAngle).TupleRad().D, new HTuple(steptAngle).TupleRad().D, "auto", "none", "use_polarity", 10);

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查找模板参数：

1. FindShapeModel(tempIamge, (new HTuple(startAngle)).TupleRad(), (new HTuple(endAngle - startAngle)).TupleRad(), minScore, 1, 0.5, new HTuple("least_squares"), numLevel, 0.9, out findRow, out findColumn, out findAngle, out findScore);

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蓝色方框是需要识别的模板

你这是要识别啥啊

补充:需要识别的轮廓

蓝色框体是需要识别的轮廓

1. read_image (Image, 'D:/halcon/104344shhmf5hz3hz3flq9.jpg')
   
2. dev_open_window (0, 0, 512, 512, 'black', WindowHandle)
   
3. rgb1_to_gray (Image, GrayImage)
   
4. threshold (GrayImage, Regions, 227, 255)
   
5. dilation_circle (Regions, RegionDilation, 3.5)
   
6. connection (RegionDilation, ConnectedRegions)
   
7. select_shape (ConnectedRegions, SelectedRegions, 'area', 'and', 90000, 100000)
   
8. fill_up (SelectedRegions, RegionFillUp)
   
9. 
   
10. area_center (RegionFillUp, Area, Row, Column)
    
11. gen_cross_contour_xld (Cross, Row, Column, 30, 0.785398)
    
12. dev_clear_window ()
    
13. dev_set_colored (3)
    
14. dev_set_draw ('margin')
    
15. dev_display (Image)
    
16. dev_display (Cross)
    
17. dev_display (RegionFillUp)

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zjjdsg 发表于 2023-8-31 11:15
read_image (Image, 'D:/halcon/104344shhmf5hz3hz3flq9.jpg')
dev_open_window (0, 0, 512, 512, 'black' ...

面积筛选方式，有局限性

这么简单的一个模板匹配会有什么问题呢？

1. read_image (Image, 'C:/Users/Administrator/Desktop/104344jp7p7nnpo0ppnk8o.jpg')
   
2. threshold (Image, Region, 200, 255)
   
3. connection (Region, ConnectedRegions)
   
4. select_shape_std (ConnectedRegions, SelectedRegions, 'max_area', 70)
   
5. fill_up (SelectedRegions, RegionFillUp)
   
6. dilation_rectangle1 (RegionFillUp, RegionDilation, 7, 7)
   
7. erosion_rectangle1 (RegionFillUp, RegionErosion, 7, 7)
   
8. difference (RegionDilation, RegionErosion, RegionDifference)
   
9. reduce_domain (Image, RegionDifference, ImageReduced)
   
10. edges_sub_pix (ImageReduced, Edges, 'canny', 1, 20, 40)
    
11. create_shape_model_xld (Edges, 'auto', -0.39, 0.79, 'auto', 'auto', 'ignore_local_polarity', 5, ModelID)
    
12. find_scaled_shape_model (Image, ModelID, -0.39, 0.78, 0.9, 1.1, 0.5, 1, 0.5, 'least_squares', 0, 0.9, Row, Column, Angle, Scale, Score)
    
13. dev_display (Image)
    
14. dev_display_shape_matching_results (ModelID, 'green', Row, Column, Angle, 1, 1, 0)
    
15. gen_cross_contour_xld (Cross, Row, Column, 36, Angle)

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