Yong, Einstein, De Jesus, Luigi Carlo, Brucal, Stanley Glenn, Samaniego, Jr., Leonardo, Peruda, Jr., Sergio, Cosio, Paulo, Villarroel, Juan Miguel, Novilla, Kimberly, Cacalda, Esther Anne, Lacar, Clarisha, AND Calibara, Andrea. " RAMY Greeting Feature using HAAR cascade classifier and HOG Algorithm for Asia Pacific College" International Journal of Computing Sciences Research [Online], Volume 7(13 April 2023)