Image Resolution Enhancement using Discrete, Stationary and Dual Tree Wavelet Transform

Image resolution enhancement technique based on interpolation of the high frequency subband images obtained from discrete, stationary and Dual tree Complex wavelet transform(DT-CWT).In this study, a comparison of two image resolution enhancement techniques in wavelet domain is done. Each method is analyzed quantitatively and visually. On the basis of analysis, the most efficient method is proposed. The algorithms uses low resolution image as the input image and then wavelet transform is applied to decompose the input image into different high and low frequency subbands. Then these subband images along with the input image are interpolated. Finally all these images are combined to generate a new resolution enhanced image by using inverse process. Keywords— Discrete Wavelet Transform, Stationary Wavelet Transform, Dual Tree Complex Wavelet Transform Interpolation.

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