Title :
Real-Time Screen Watermarking Using Overlaying Layer
Author :
Piec, Maciej ; Rauber, Andreas
Author_Institution :
Vienna PhD Sch. of Inf., Vienna Univ. of Technol., Vienna, Austria
Abstract :
Protection of intellectual property is a well researched area of computer science. There are many methods that allow securing information that should not be available to unauthorized parties. Many of these techniques provide protection on a relatively low level such as file encryption or filtering of network traffic. However, many of the mechanisms fail as soon as someone attempts to save the content of the screen that is displaying the sensitive data. Such a malicious insider can cause serious harm to an organization´s reputation and finances. It is important in case of such incidents to be able to track the source of the leak. In this paper a method for watermarking the screen image, that can be used in forensic investigations, is presented. The imperceptible digital watermark is placed on the overlay layer over the whole computer screen. Our method leverages the Human Visual System (HVS) properties and allows to generate dynamically adaptable watermarks that respond to the currently displayed content by using the FAST feature detection algorithm. We use QR Codes that provide spatial non-uniformity and error correction capabilities. The evaluation shows that our scheme works well in the selected use-case scenarios. We show that the watermark is robust against modifications typical for office processing, such as cropping and quality preserving JPEG compression.
Keywords :
cryptography; data protection; digital forensics; error correction codes; feature extraction; image coding; image watermarking; industrial property; object detection; FAST feature detection algorithm; HVS properties; QR codes; computer screen; cropping; digital watermark; error correction capabilities; file encryption; forensic investigations; human visual system; information security; intellectual property protection; malicious insider; network traffic filtering; organization finances; organization reputation; overlaying layer; quality preserving JPEG compression; real-time screen watermarking; screen image watermarking; spatial nonuniformity; unauthorized parties; Computers; Feature extraction; Intellectual property; Media; Real-time systems; Robustness; Watermarking; digital forensic; malicious insider; overlaying layer; real-time digital watermarking; screenshot protection;
Conference_Titel :
Availability, Reliability and Security (ARES), 2014 Ninth International Conference on
Conference_Location :
Fribourg
DOI :
10.1109/ARES.2014.83