Image Watermarking Using Psychovisual Threshold Over the Edge

• Main Authors: Abu, Nur Azman, Ferda , Ernawan, Hermman, NannaSuryana, Sahib, Shahrin
• Format: Conference or Workshop Item
• Language: English
• Published: 2013
• Subjects: QA75 Electronic computers. Computer science
• Online Access: http://eprints.utem.edu.my/id/eprint/10868/1/Index_AsiaAres_Jogyakarta_2013.pdf; http://eprints.utem.edu.my/id/eprint/10868/

Currently the digital multimedia data can easily be copied. Digital image watermarking is an alternative approach to authentication and copyright protection of digital image content. An alternative embedding watermark based on human eye properties can be used to effectively hide the watermark image. This paper introduces the embedding watermark scheme along the edge based on the concept of psychovisual threshold. This paper will investigate the sensi-tivity of minor changes in DCT coefficients against JPEG quantization tables. Based on the concept of psychovisual threshold, there are still deep holes in JPEG quantization values to embed a watermark. This paper locates and utilizes them to embed a watermark. The proposed scheme has been tested against vari-ous non-malicious attacks. The experiment results show the watermark is robust against JPEG image compression, noise attacks and low pass filtering.