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An image watermarking methodology by using transformation with wavelets

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Project Description

Image watermarking is a technique of embedding data or image or audio in an image basically for authentication or security purposes. Now, image is a set of pixels which are combined in the form of a matrix and as a result these form an image. The color of any image is represented by a pixel value. Image watermarking technique is applied by accessing these pixel values and then changing them by hiding data content in them. The change in some pixel values do not change the way the image looks. This data hiding in the image is done by using some technique. In this M-tech level project wavelet transformation technique is used for watermarking an image. Employing wavelet transformation technique for image watermarking makes the content less visible and also improves the security of the hidden data. This M-tech level project is implemented using image toolbox of MATLAB software. In this wavelet transformation based image watermarking, the layers of the image are first separated and then the content is hidden in the features of the image by dividing the image into certain wavelets. When, the data is hidden by applying using transformation with wavelets, its visibility decreases which do not degrades the image quality after watermarking. This is an M-tech level project that is implemented using MATLAB software and is about watermarking an image using the technique of wavelet transformation. This is one of the areas of image processing in which researches are being carried for designing more reformed techniques for watermarking. The technique that is used in the project helps improve the security of hidden data without degrading the image quality.

Modules Used
SMM17_img
Image Watermarking
MAT1_img
Basic Matlab
Related Training Modules
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    Matlab Basics and Image Processing And GUI Development

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