![]() ![]() Such a UCI system can be widely applied to areas such as e-learning, distribution tracking, transaction certification, and reference linking services when the system is equipped with 2D barcode technology and secure watermarking algorithms. In this study, to protect copyrights of digital contents securely without quality degradation, we attempt to discover a sequence of process for generating a 2D barcode from a UCI tag and watermarking the barcode into a digital content. We believe that these concerns can be mitigated by inserting an invisible digital tag containing information about an identifier and digital copyrights into the entire area of the digital content. First, quality of the content may deteriorate due to the insertion of the barcode second, a malicious user can invalidate the identifying tag, simply by removing the tag from the original content. However, attaching a 2D barcode directly to a digital content raises two problems. So, researchers and practitioners have shown great interest in methods that utilize the two-dimensional barcode (2D barcode) to attach UCI tags to digital contents. UCI tags can contain not only identifiers but also abundant additional information regarding contents. It circulates and utilizes identifiable resources efficiently by connecting various online and offline identifying schemes. ![]() One type of implementation of a digital object identifier developed by the Korean Government is termed the Universal Content Identifier (UCI) system. A digital object identifier refers to diverse technologies associated with assigning an identifier to a digital resource and managing the identification system.
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