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In this paper, a new blind watermarking for copyright protection of color images based on the U matrix through Quaternion Singular Value Decomposition (QSVD) is proposed. The proposed method represents the color image with a quaternion matrix, so that it can deal with the multichannel information in a holistic way. Then the array of pure quaternion is divided into non-overlapping blocks and we perform...
Automatic identification of video is a key technique to various applications such as content based retrieval, copyright protection and broadcast monitoring. In this paper, we present a novel video identification scheme via spatio-temporal salient points. To achieve higher robustness to content preserved manipulations, especially geometric distortions, salient points are detected from both spatial...
In this paper we present a novel framework employing biometric recognition and robust watermarking technique to achieve a number of media privacy and security objectives. Scheme description and presented test results support and prove the claims of practicability and effectiveness of the model for a number of privacy and security related applications.
With halftone images widely used in books, magazines, printer outputs, and fax documents, it is desirable to embed data in halftone images for copyright protection, content authentication and tamper detection. This paper proposes a novel watermarking method for error diffused halftone images based on the binary pseudo-wavelet transform. We employ the binary pseudo-wavelet coefficients' distribution...
Most of the researchers on watermarking techniques have focused on protecting the copyright information in various data such as audio, image and video signals. However, relatively less watermarking techniques are in respect of copyright protection of 3D model objects. After analyzing the data structure of 3D models, we propose a novel and efficient algorithm which allows embedding public watermarks...
A novel robust digital image watermarking algorithm based on predictive vector quantization is proposed in this paper. The robust watermark is embedded in the image by selecting the prediction mode of each PVQ coded vector according to the watermark bit. The proposed watermarking algorithm is proved to be robust against both friendly and hostile attacks, such as JPEG compression, VQ compression and...
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