PREMAL B, Nirpal. Image Compression using Discrete Cosine Transform, Block Truncation Coding and Gaussian Pyramidal Approach. International Journal of Computer Sciences and Engineering, [S. l.], v. 3, n. 4, p. 21–25, 2015. Disponível em: https://ijcse.isroset.org/index.php/j/article/view/475. Acesso em: 2 feb. 2026.