CODING/DECODING DEVICE WITH PIXEL UNITS AND METHOD THEREOF AND CODING/DECODING SYSTEM USING THE SAME AND METHOD THEREFOR

摘要

PURPOSE: A coding method with pixel units is provided to disassemble inputted information with pixel units to make the information a puzzle, to irregularly change locations, and to irregularly convert colors to code in multi stages, so as to make impossible to decode the information. CONSTITUTION: A screen input unit inputs information such as an image or text(401). A security code input unit inputs a security code(402). A random number generator or a random number map generator generates a random number map(403). The inputted image is normalized by controlling colors, resolution, critical values, and the size(404). The normalized image is disassembled to pixel units(405). Disassembled pixels are coded in multi stages(406). The inputted security code is coded to generate a code key(407). The code key is inserted into a coded image(408). The coded image is output(409).