Comparing Wavelet and Wavelet Packet Image Denoising Using Thresholding Techniques
Journal: International Journal of Science and Research (IJSR) (Vol.5, No. 6)Publication Date: 2016-06-05
Authors : Tapan Kumar Hazra; Rajib Guhathakurta;
Page : 790-796
Keywords : Multi-resolution; Sub-Band Coding; Discrete Wavelet Transform; Continuous Wavelet Transform; Wavelet Packet;
Abstract
Image denoising has remained a fundamental problem in the field of image processing. With Wavelet transforms, various algorithms for denoising in wavelet domain were introduced. Wavelets gave a superior performance in image de-noising because here multi-resolution analysis is possible. Wavelet thresholding is a signal estimation technique that exploits the capabilities of wavelet transform for signal denoising. The aim of this project was to study various denoising techniques using wavelet and wavelet packets and compare them to determine the better one for image denoising. Performance of denoising algorithm is measured using quantitative performance measures such as Signal-to-Noise Ratio (SNR) and Mean Square Error (MSE).
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