Wartermark insertion/detection apparatus and method thereof

PURPOSE: A wartermark insertion/detection apparatus and a method thereof are provided to increase the information protection efficiency remarkably by inserting multiple bits through the division of a region based on a pixel strength value. CONSTITUTION: A wartermark insertion/detection apparatus(100) includes a frame arrangement unit(110), a frame region split unit(120) and a bit information insertion unit. The frame arrangement unit arranges a reception image frame in input order, and generates a first group to include the arranged image frame as many as the set number. The frame region split unit splits each frame into at least two regions based on the strength value of the pixels included in the each image frame. The bit information insertion unit inserts bit information, which is matched with the user information, into the designated region among the split regions.