This paper presents a new method for image coding information processing based on CDMA, where can use the PN sequences applying to multispectral. There are two families of orthogonal coding sequences have been used. Also hiding a digital image information technology is introduced.
Moon Ho Lee,
"Binary bent sequences for image signal transmission", Proc. SPIE 4553, Visualization and Optimization Techniques, (25 September 2001); doi: 10.1117/12.441568; https://doi.org/10.1117/12.441568