Patent ID: 8306221
Filing Date: 2012-11-06
Classification: H04N

Abstract:
1. An image encryption apparatus to encrypt an input image with an encryption key, the image encryption apparatus comprising: an encryption area selector to select an encryption area within the input image where the input image is to be encrypted; a division separator to divide the encryption area into a plurality of divisions, each of the plurality of divisions including at least one pixel; a sector separator to divide each of the plurality of divisions into a plurality of sectors; an image converter to perform an image conversion on each of the plurality of sectors; a scrambler to scramble the divisions in accordance with the encryption key; and a pixel value converter to convert a pixel value of only a pixel within a boundary marker of each of the plurality of divisions to indicate a boundary of each of the plurality of divisions, each boundary marker being selected as a minimum area of one or more adjacent pixels located at a predetermined position within a sector located at a predetermined position within each of the plurality of divisions.