Simultaneous compression and encryption of color video images

Ayman Alfalou (1) , C. Brosseau (2, 3) , Nadine Abdallah (4, 1)

1 L@BISEN - Laboratoire ISEN
2 Laboratoire d'étude des marériaux
3 Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
4 IRCCyN - Institut de Recherche en Communications et en Cybernétique de Nantes

We study theoretically a simultaneous compression and encryption method which is optically implementable and well adapted to color images. Remarkably, we also show that an optimized version of this method can be used to process images from video sequences which are treated as multiple images with taking care of temporal redundancy. The major strength of the method is in its generality and robustness against various known-plaintext attacks making this algorithm appealing for color video images.

Mots clés: Compression; Encryption; Discrete cosine transform; Color image; Video sequence

Domaines: Sciences de l'ingénieur [physics]; Informatique [cs]; Physique [physics]

Ayman Alfalou, C. Brosseau, Nadine Abdallah. Simultaneous compression and encryption of color video images. Optics Communications, 2015, 338, pp.371-379. ⟨10.1016/j.optcom.2014.10.020⟩. ⟨hal-01277177⟩