[Halcon vision] software programming ideas

Visual software programming ideas

1. Image preprocessing ： Image denoising , Image corrosion , Image expansion , Open close operation , Morphological processing, etc .
2. Image region of interest segmentation ： Use threshold segmentation , Segment the region of interest .
3. Image area filtering ： In the segmented region image , According to the characteristics of , Screen out the areas we need . These features include length , Width , Area etc. .
4. Characteristics analysis ： In the filtered area image , Quantitative analysis of it , Including fitting circles , Fitting straight lines .
5. Target information extraction ： Get target information , Such as dimension value , Coordinate values, etc .

* Obtain the case of aluminum sheet area 

* Image Reading 
read_image (Image, 'printer_chip/printer_chip_01')

* Threshold segmentation 
threshold (Image, Regions, 171, 253)

* Filling cavity 
fill_up (Regions, RegionFillUp)

* Connected domain 
connection (RegionFillUp, ConnectedRegions)

* Select area 
select_shape (ConnectedRegions, SelectedRegions, 'area', 'and', 27000, 30000)

* Clean the window 
dev_clear_window ()

* Display aluminum sheet area 
dev_display (SelectedRegions)