Image Scrambling Based on Bit Shuffling of Pixels
Shuozhong Wang · Journal of Optoelectronics·laser · 2007
We propose an image-scrambling scheme based on bit shuffling of individual pixels,which doesnt require iterative computation.Bits of each pixel are divided into even and odd groups.Those in the even group are swapped so that theoriginal higher bits become lower and vice versa,while bits in the odd group are exchanged with the odd bits in an uncorrelated pixel with a certain offset from the current pixel.The latter is done to reduce the probability of pixel-value being unchanged after bit shuffling.Experiments show that the algorithm is effective,robust and faster than the Arnold transform.