2026. DIABETIC RETINOPATHY SEVERITY CLASSIFICATION USING GAMMA CORRECTION-BASED IMAGE ENHANCEMENT AND BN-VGG ARCHITECTURE. JITK (Jurnal Ilmu Pengetahuan dan Teknologi Komputer). 11, 4 (May 2026), 1119–1130. DOI:https://doi.org/10.33480/jitk.v11i4.8094.