Capturing image of a selected blob

Programming Questions C-style API
6

Here you go:

using Stemmer.Cvb;
using Stemmer.Cvb.Foundation;
using System.Linq;

namespace FBlob_ExtractBlobImage_CS
{
  class Program
  {
    static void Main(string[] args)
    {
      var img = Image.FromFile(@"%CVB%\Tutorial\Foundation\Images\Blob\Microswitch.bmp");

      BlobFilter filter = new BlobFilter();
      filter.RangeFilters.Add(RangeFilter.Size, new ValueRange<int>(100, 100000));

      var blobResult = Blob.BinarizeAndSearch(img.Planes[0], new ValueRange<int>(0, 62), filter);

      foreach (var blob in blobResult.Select((value, index) => ( value, index )))
      {
        var blobCropImage = img.Map(blob.value.BoundingBox);
        blobCropImage.Save($"blobCropImage{blob.index}.bmp");
      }
    }
  }
}

By the way, if you prefer C#/.Net, you could have posted this question in that particular sub forum. I’ve only replied with C++, because we are here in the C-style API sub forum. :slight_smile:

You are right, this simply crops the bounding box of the a given blob.

If you only want the very area of the blob, you will have to use the binary image as a mask for the source image.

1 Like