A finite field cosine transform-based image processing scheme for color image encryption. - Juliano B. Lima; Edmar S. da Silva; Ricardo M. Campello de Souza (GlobalSIP, 2015)

Cosine transforms over fields of characteristic 2: Fast computation and application to image encryption. - Juliano B. Lima; Edmar S. da Silva; Ricardo M. Campello de Souza (Signal Process. Image Commun., 2017)