code: public static void extractCameraMatrices( TrifocalTensor tensor , DMatrixRMaj P2 , DMatrixRMaj P3 ) {
  		TrifocalExtractGeometries e = new TrifocalExtractGeometries();
  		e.setTensor(tensor);
  		e.extractCamera(P2,P3);
  	}
docs: <p>
  Extract the camera matrices up to a common projective transform.
  </p>
  
  <p>
  NOTE: The camera matrix for the first view is assumed to be P1 = [I|0].
  </p>
  
  @see TrifocalExtractGeometries
  
  @param tensor Trifocal tensor.  Not modified.
  @param P2 Output: 3x4 camera matrix for views 1 to 2. Modified.
  @param P3 Output: 3x4 camera matrix for views 1 to 3. Modified.