Hi,

I have a little Problem with a task I think should be awfully simple. I use the v3ga Blobdetection Libary (http://v3ga.net/processing/BlobDetection/Library/)to detect blobs on a webcam image. It all works pretty well and drawing the edges is pretty easy. But I now want to fill the space inside these edges. I tried to let the lib compute triangles for the inner space:

for (int n=0 ; n<theBlobDetection.getBlobNb() ; n++)
 {
   b=theBlobDetection.getBlob(n);
   if (b!=null)
   {

      for (int t=0 ; t<b.getTriangleNb() ; t++)
      {
        tr = b.getTriangle(t);
        if(tr != null)
        {
          eA = b.getTriangleVertexA(tr);
          eB = b.getTriangleVertexB(tr);
          eC = b.getTriangleVertexC(tr);
          if (eA !=null && eB !=null && eC != null)
          {
             beginShape();
             vertex(eA.x*width, eA.y*height);
             vertex(eB.x*width, eB.y*height);
             vertex(eC.x*width, eC.y*height);
             endShape();
          }
        }
      }
   }
 }


but I could hardly make it fill all the blobs. At somepoint it just stops filling out the edges. I also tried to increase the amount of Triangles per Blob via setConstants() but it never worked well. Could this be a graphics card issue?

It just seems way to complicated to me to calculate a few thousand triangles to simply fill this blobs...

Is there a clever way to do this?

Thanks for your time,
best

uli

Hi,
setConstants() is a static method of the BlobDetection. It sets up some constants used by instances to allocate some chunks of memory for recording pieces of informations about blobs. It has imperatively to be called before any instance is created. May be a better thing to do would be not to make setConstants static, thus allowing fine-tuning memory allocation for each instance.