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This paper presents a reversible fragile watermarking scheme for the authentication of demosaicked images. Each authentication code is embedded into the two rebuilt components of each color pixel by using a designed authentication table (ACT). The utilization of ACT secures the watermarking procedure and the watermarked image can be recovered back to the original demosaicked image by the proposed...
This paper proposes a novel image authentication scheme based on absolute moment block truncation coding (AMBTC). In the proposed scheme, for each compressed image block we use the parity of the bitmap (BM) to generate the authentication code. For image authentication, data hiding is adopted to embed the authentication code to quantization levels of each image block compressed by absolute moment block...
This paper presents a novel approach for retrieving images from databases using eigen color and the concept of multiple instance learning. Usually, vehicles have various colors and shapes under different viewpoints, weathers, and lighting conditions. All the variations will increase many difficulties and challenges in selecting a general feature to describe vehicles. Thus, traditional methods to retrieve...
To support users' purchase of digital content over a mobile network, a mobile trading scheme for digital content based on the digital rights concept is proposed in this paper. Based on our proposed mobile trading scheme, not only can content providers transmit authorized digital content to service providers according to predefined contracts, but consumers can also purchase digital content through...
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