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In this paper SVM algorithm is applied to classify the scenery video types in compressed domain. Firstly we extract video sequences randomly from scenery video and detect representative frames from the video sequences; secondly we extract features such as color layout, dominant color, edge histogram and face feature; then according to SVM, representative frames are classified as natural scenery, personality,...
This paper proposes a novel spatial domain color digital watermarking scheme based on chaotic maps, and the host image is color RGB image. Using Lorenz map and the Arnold cat map encrypt the watermark signal and the embedding position of the host image each other. The color space of the color host image is first converted from RGB to YCbCr. In order to resist JPEG compression, all three watermark...
JPEG 2000 is a new image coding system that delivers superior compression performance and provides many advanced features in scalability, flexibility, and system functionalities that outperform all previous standards. It brings exciting possibilities to many imaging applications such as the Internet, wireless, security, and digital cinema. This paper gives an overview of this triumph in innovations...
News, magazines, Web pages, etc. in modern life always contain much text information. In this paper, we propose a novel approach to detect text in images with very low false alarm rate. First of all, neural network color quantization is used to compact text color. Second, 3D histogram analysis chooses several color candidates, and then extracts each of these color candidates to obtain several bi-level...
The paper proposes a new steganographic model for secret data communication. A stack of four modules is used. The "compression module" gives the benefit of entropy coding. The "cryptographic module" provides confidentiality in the communication. To preserve integrity of data, the "hash module" is used with a shared secret key. A technique is proposed in which it is not...
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