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Image Enhancement is one of the most important and difficult techniques in image research. The aim of image enhancement is to improve the visual appearance of an image, or to provide a " better transform representation for future automated image processing. Many images like medical images, satellite images, aerial images and even real life photographs(More)
To achieve the copyright protection in digital images, watermarking is identified as a major technology to protect digital images from illegal manipulation and geometric distortions. In this paper we discuss a digital image watermarking algorithm based on Discrete Wavelet Transform – Discrete Cosine Transform –Singular Value Decomposition (DWT-DCT-SVD).(More)
The digital multimedia content authentication and copyright protection has become an important issue in the recent years. Digital Watermarking Technology has been proposed for the implementation of Digital Right Management. Digital watermarking is the process of embedding information into digital multimedia content such that the information can later be(More)
The human visual system exhibits reduced sensitivity to distortions in the regions of an image where the rate of change is significant. This entails that a watermark with significant value can be robust and if it resides near around edges and textured areas of an image, it would be imperceptible as well. The present work exploits this characteristic of the(More)
Image fusion is used to enhance the quality of images by combining two images of same scene obtained from different techniques. In medical diagnosis by combining the images obtained by Computed Tomography (CT) scan and Magnetic Resonance Imaging (MRI) we get more information and additional data from fused image. This paper presents a hybrid technique using(More)
This paper presents a novel technique to protect the copyright information by embedding a bit map image as watermark into the frames of videos in such a way in could be extract to proof the ownership from the video contents. The proposed scheme produce a robust video watermarking scheme into two bands therefore named as multiband with strength ?1 and ?2(More)
Video watermarking plays a key role in copyright protection domain of today's world. In the following paper, a blind watermarking algorithm is being proposed in which the watermark information is being embedded by little alteration of some of the value of DCT coefficients of luminance part of video during encoding it in MPEG-2 style. It is obvious that for(More)
— The Human Visual System is found to be less sensitive to the highly textured area of the image. Moreover, in all colours the blue is least sensitive to the HVS (Human Visual System). While working on colored images when using the mathematical and biological models of HVS, the preferred colour model must be HSV (Hue, Saturation and Value) colour model(More)
Satellite images are used in many applications like military, forecasting, astronomy, and geographical information. Satellite images have to face spatial and spectral resolution problems due to scattering, atmospheric conditions, etc., also they have poor perception. This limitation of resolution needs to be overcome before further processing. The goal of(More)