Copyright Protection And Fingerprinting For Still Digital Image By Using digital Watermarking
Ahmed Sultan Al-Hegami, Taha Al-Rawhani, Muath Shakir Al-Ubaydi
Journal of Intelligent Computing, Vol. 1, No. 2, 2010.
DOI: 
Link: http://www.dline.info/jnt/fulltext/v1n3/1.pdf
Abstract:
The Internet has today become the main channel to perform the e-business activities, and consequently, most of the products and services have been transformed from physical products/services to digital products/services, and the manner of delivery of such products (e.g. Journals, certificates, images, advertising, video etc) have been converted to the digital way. The ease of copying and transforming digital products generates an intellectual property problem; that means, the copying and transformation of digital products will be achieved without the permission of the owner or publisher. The useful proposed way to solve intellectual property problem is digital watermarking technique. This technique has been used to keep copyright of digital products, such as audio, video, image, and general digital documents. The ownership authentication and the illegal copies identification of digital media are the main issues of the copyright protection [7], that we will discuss in this paper. In this paper, we propose a copyright protection and fingerprinting scheme that met the main objectives: 1) Minimize the number of the original image blocks when we use the DCT transform in order to increase the speed of embedding process, (treatment of the capacity issue), 2) Raise the level of security by using unique Key to encrypt the watermark, 3) Increase the robustness to compression by JPEG and cropping, and, 4) Identify each image through buyer information (fingerprinting). We tested the proposed scheme and experiment with some common images and found the results quite promising.