FPGA-based Features Extraction Sensor for Lettuce Crop. - Maverick Jonas G. Adonis; Renzo S. Forteza; Alaine Richelle C. Ramos; Anastacia B. Alvarez; Maria Theresa G. de Leon; John Richard E. Hizon; Maria Patricia Rouelli Sabino-Santos; Christopher G. Santos; Marc D. Rosales (TENCON, 2020)