Averaging attack resilient digital fingerprinting method using gd-pbibd

The present invention relates to a digital fingerprinting technique for protecting copyright of an image. Digital fingerprinting is a technology that covers the authenticity and when extracting the code embedded in the image for each user sells a unique code to insert the image, and the copyright dispute regarding the future generation. In the present invention, fingerprint code using the GD-PBIBD is not only unique to the user to indicate, the invention proposes having the strong characteristic in the averaging attack. According to the present invention, a high efficiency than the conventional fingerprint code, it is possible to minimize the image degradation of the image in accordance with the code inserted, and it inserts a pattern of a small number has the speed necessary to extract is effective in the extraction. Fingerprint, GD-PBIBD, digital image fingerprinting, averaging attack