Structure of [Halcon vision] operator

1. Preface

        Halcon There are nearly 2000 operators in . We can classify according to the law .

2. According to the English names of operators

contain draw, Operator representing interface interaction , Someone needs to draw the area .

contain gen, Represents the generating class operator , For example, generate a circle , Generate rectangle, etc .

contain get, Represents the operator that gets some attributes .

contain tuple, Represents an operator related to an array .

contain select, Represents the operator related to filtering .

contain contour, Represent operators related to contour .

contain gray, Represents the operator related to gray .

contain dev, Represents the operator related to the operation window .

3. Classify according to the parameters of the operator

Parameter operation class , Parameters are generally arrays, etc .

Object operation class , The object is usually an image , Area , Outline, etc .

4. Code

* close window 
dev_close_window ()

* open windows 
dev_open_window (0, 0, 512, 512, 'black', WindowHandle)

* Read images 
read_image (Image, 'printer_chip/printer_chip_01')

* Draw a rectangular area 
draw_rectangle1 (WindowHandle, Row1, Column1, Row2, Column2)

* Generate a rectangular area 
gen_rectangle1 (Rectangle, Row1, Column1, Row2, Column2)

* Cutting area 
reduce_domain (Image, Rectangle, ImageReduced)

* Clean the window 
dev_clear_window ()

* Display area 
dev_display (ImageReduced)

5. thumbnail

6. Conclusion

        Operator classification , Make it easier for programmers to remember .