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computer-visionhalcon

How to merge regions from region array in Halcon?

I am trying to iterate all rectangle regions in the image below and check which ones overlap with other regions. The overlapping regions need to be merged with eachother. I think my problem lies with iconic array initialisation and I had a look at a similar question over here but that one is about iconic variables not region array. This is what I tried:

* generated_rects is filled with 81 mostly overlapping rectangles
resultRegions := [] 
count_obj (generated_rects, nrOfRects)
for i := 0 to nrOfRects-1 by 1
    * get center
    region_features (generated_rects, 'row', r)
    region_features (generated_rects, 'column', c)     
    if (resultRegions == [])
        * copy region         
        continue
    endif
    * if there are result regions to check for overlap 
    count_obj (resultRegions, resultRegions_count) // error on: resultRegions
    for j := 0 to resultRegions_count -1 by 1
        select_obj (resultRegions, selectedRegion, j) // error on: resultRegions
        
        
        * get_region_index (resultRegions, r, c, Index) // error on: resultRegions
        * test_region_point (resultRegions, r, c, IsInside) // error on: resultRegions
    endfor    
endfor

enter image description here

Solution

  • Without information which of them are overlapping:

    union1 (generated_rects, RegionUnion)
connection (RegionUnion, ConnectedRegions)

    enter image description here