Region of Halcon: generation of multiple regions (3)

One 、 summary

         Some areas generate , Beginners need everyone to try , This is not just a matter of enhancing the image , And understand Halcon The process of ability . This paper introduces several applications in numerical image analysis , More useful domain operators . Please share ！

Two 、 Generating area

2.1 gen_checker_region operator

  function ： Create a square format area .

gen_checker_region( : RegionChecker : WidthRegion, HeightRegion, WidthPattern, HeightPattern : )

The operator gen_checker_region Returns a square area . Each black area of the chessboard belongs to this area . The horizontal and vertical expansion of the area are affected by WidthRegion、HeightRegion Limit , The field size of the checkerboard is affected by WidthPattern * HeightPattern Limit .

Test code ：

get_system ('neighborhood', Information)
gen_checker_region (RegionChecker, 511, 511, 32, 32)
set_system ('neighborhood', 4)
dev_set_colored (6)
connection (RegionChecker, ConnectedRegions)
set_system ('neighborhood', Information)

2.2 gen_grid_region

4. gen_grid_region                            function ： Create an area based on the number of lines or pixels _.

gen_grid_region(RegionGrid, 10, 10, 'lines', 512, 512)

The area formed by the edge of the generated lattice .

  Be careful ： gen_checker_region and gen_grid_region Are two complementary grid regions .

2.3 Random point area

gen_random_region    Generate a rectangular area , There are random points in the region .

gen_random_region(RegionRandom, 256, 256)

 2.4 Random drawing object area

gen_random_regions                    function ： Create random areas such as circles , Rectangles and ellipses .

gen_random_regions(Regions, 'circle', 10, 20, 10, 30, -0.7854, 0.7854, 100, 512, 512)

2.5 Graph region generation operator  

1. gen_circle                                     function ： Create a circle .

2. gen_ellipse                                   function ： Create an ellipse .

3. gen_empty_region                       function ： Create an empty area .

4. gen_rectangle1                             function ： Create a rectangle parallel to the axis .

5. gen_rectangle2                             function ： Create rectangles in any direction .

6. gen_region_contour_xld              function ： from XLD Create an area in the tuple .

7. gen_region_histo                        function ： Convert a histogram to an area .

8. gen_region_hline                        function ： take Hesse The input lines described in the normal shape are stored as areas .