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Image Resolution Improvement Using DWT & SWT Transform

Journal: International Journal of Computer Techniques (Vol.2, No. 1)

Publication Date:

Authors : ; ;

Page : 34-37

Keywords : DWT; IDWT; Interpolation; SWT;

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In this work, the proposed method is image resolution enhancement technique that generates better high resolution image. To decompose original low resolution image into different sub bands DWT technique is used. After this interpolation of three high frequency sub band images is done using bicubic interpolation. In order to correct estimated co-efficients high frequency sub bands of input image being incremented into interpolated high frequency sub bands which are obtained by SWT. Input image is also interpolated separately at the same time. An image is decomposes into different sub bands images using Discrete wavelet transform (DWT) like LL, LH HL and HH. Stationary wavelet transform (SWT) is another type of wavelet transform which is used for image processing applications but there is no use of down-sampling in SWT, so input image and sub bands are of same size

Last modified: 2015-07-09 16:34:48