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Real world contains a wide range of intensities that cannot be captured with traditional imaging devices. Moreover, even if these images are captured with special procedures, existing display devices cannot display them. This paper presents a comparative study of most famous tone mapping algorithms. Tone mapping is the process of compressing high dynamic range images into a low dynamic range so they...
In this paper a Joint Perceptual Encryption and Watermarking scheme (JPEW) has been proposed. The technique has been incorporated in the JPEG compression standard. Perceptual Encryption is required in many of the multimedia content preview applications. On the other hand, watermarking is used to ensure the integrity of the multimedia content. There is always a need of an efficient technique that reduces...
Embedding maximum information in a stego-image with minimum change in its appearance has been a major concern in image-based steganography techniques. In this paper, we present a strategy of attaining maximum embedding capacity in an image in a way that maximum possible neighboring pixels are analyzed for their frequencies, to determine the amount of information to be added in each pixel. The technique...
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