AUAD, Manoela; ALVES, Sarah; KAKIZAKI, Gabriel; REIS, Julio C. S.; SILVA, Michel M.. A Filtering and Image Preparation Approach to Enhance OCR for Fiscal Receipts. In: CONFERENCE ON GRAPHICS, PATTERNS AND IMAGES (SIBGRAPI), 37. , 2024, Manaus/AM. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2024 .