code: public static <C extends CameraPinhole>C matrixToPinhole(DMatrixRMaj K , int width , int height , C output )
  	{
  		return (C)ImplPerspectiveOps_F64.matrixToPinhole(K, width, height, output);
  	}
docs: Converts a calibration matrix into intrinsic parameters
  
  @param K Camera calibration matrix.
  @param width Image width in pixels
  @param height Image height in pixels
  @param output (Output) Where the intrinsic parameter are written to.  If null then a new instance is declared.
  @return camera parameters