METHOD FOR EMBEDDING WATERMARK BASED ON INTEGER-TO-INTEGER WAVELET TRANSFORM

摘要

The present invention is an image of a predetermined size (X × Y) and then divided by the plurality (XY / MN) image block of the small sizes (M × N) than a predetermined size, the integer wavelet transform to the selected image blocks of the divided image blocks as a method by which to insert the watermark basis, the image block assigned to the step of assigning the image block for the insertion of indicating the position of the image block to be the watermark is inserted among the image block location information separately, location insertion in the step of inserting the position information, the method comprising inserting the watermark and the additional information in the remaining image blocks in addition to the image block assigned for insertion of the location information, the watermark extraction of the watermark from the inserted image and then it characterized by reversible to restore the source image without distortion. ; Integer wavelet transform, watermark, reversibility