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This paper consists of a comparative analysis of full reference image quality measures. The quality evaluation model of Peak signal to noise ratio (PSNR), Structural Similarity Index (SSIM) as well as Visual Information Fidelity (VIF) has been discussed. This paper emphasizes on the quality evaluation of images after their recovery from their noisy counterparts. The image quality assessment algorithms...
Hybrid compression techniques are used to improve the compression efficiency in case of medical images. In region of interest based hybrid compression, the image is divided into foreground which contains diagnostically important areas such as tumor in case of brain MRI images and the remaining is the background region. The technique performs lossless coding of ROI while the background is heavily compressed...
In cyber world, protection of copyrighted data is catching its attention due to the availability of immense amount of data and its copies in digital form. An efficient and promising means of protecting these copyrighted data is “Digital Watermarking”. In this paper, hybrid techniques which is a combination of Discrete Cosine Transform (DCT), Discrete Wavelet Transform (DWT) and Singular Value Decomposition...
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