An efficient distortion cost function design for image steganography in spatial domain using quaternion representation - Liu, Qingliang; Su, Wenkang; Ni, Jiangqun; Hu, Xianglei; Huang, Jiwu (Signal processing, 2024)
Keywords: Distortion function; Quaternion; Spatial image; Steganography; Steganography; Spatial image; Distortion function; Quaternion