Question

How may I sort the blobs accordingly in opencv? I have all the blobs scattered over the image. I want it to be bottom right to be the first blob. Second blob to be bottom left from the 1st blob until top left the last blob. I need some suggestion on how to deal with it. Thank you.

Answer 1

I’d try something like this ..

bool sortBlobs(CBlob first, CBlob second) {

return first.x > second.x;
}


int main() {


  std::vector<CBlob> blobvector;

  CBlobResult blobs;

  // ...
  // find blobs here ...
  // ...

  for (int i = 0; i < blobs.GetNumBlobs(); i++ )
  {
    blobvector.push_back(blobs.GetBlob(i));
  }

  // now sort the vector
  std::sort(blobvector.begin(), blobvector.end(), sortBlobs);

  // ...
}