code: public static DMatrixRMaj pinholeToMatrix(double fx, double fy, double skew,
  											  double cx, double cy) {
  		return ImplPerspectiveOps_F64.pinholeToMatrix(fx, fy, skew, cx, cy,null);
  	}
docs: Given the intrinsic parameters create a calibration matrix
  
  @param fx Focal length x-axis in pixels
  @param fy Focal length y-axis in pixels
  @param skew skew in pixels
  @param cx camera center x-axis in pixels
  @param cy center center y-axis in pixels
  @return Calibration matrix 3x3