Local Negative Base Transform and Image Scrambling

Figure 9

Image scrambling on bit plane by LNBT along x- and y-direction: (a) original image of 512512l; (b) scrambled image from (a) by 11 times of LNBT at x- and y-direction; (c) scrambled image from (a) by 15 times of LNBT at y-direction and 19 times at x-direction; (d) histogram of (a); (e) histogram of (b); (f) histogram of (c).

(a)

(b)

(c)

(d)

(e)

(f)