SYSTEM AND METHOD FOR ENCODING/DECODING IMAGES, PARTICULARLY IN RELATION TO STABLY RESTORING IMAGES

摘要

PURPOSE: A system and a method for encoding/decoding images are provided to block a cryptographic attack carried out through analysis of encrypted information. CONSTITUTION: An image encoding system includes an image splitter(110), a random image generator(120), an encoder(130), and a phase card generator(140). The image splitter splits an input binary image into split images. The random image generator generates random images as many as the number of the split images. The encoder exclusive-ORs the split images and the random images one to one to generate encoded images as many as the number of the split images. The phase card generator gives phase values of pi and zero to pixel values of black and white constructing the encoded images to generate respective phase cards for the encoded images.