IMAGE BLOCK SELECTION BASED DATA HIDING DEVICE AND METHOD

摘要

A device and a method for hiding data based on image block selection are disclosed. Embodiments of the present invention relate to a technique capable of preventing important information from being easily exposed to a third party by concealing data on an image through adjustment of pixel values and by providing a technique for restoring the data from the concealed image in which the data is concealed. [Reference numerals] (111) Table storage unit; (112) Block generating unit; (113) Selection information extraction unit; (114) Block selection unit; (115) Data hiding unit; (116) Authentication information generation unit; (117) Hiding image generation unit; (118) Candidate group generation unit; (119) Pixel value recovery unit; (120) Candidate group selection unit; (121) Data recovery unit; (122) Information transmission unit