Image Quality Improvement Using Shift Variant and Shift Invariant Based Wavelet Transform Methods: A Novel Approach

Image Quality Improvement Using Shift Variant and Shift Invariant Based Wavelet Transform Methods: A Novel Approach

Sugandha Agarwal, O. P. Singh, Deepak Nagaria, Anil Kumar Tiwari, Shikha Singh
Copyright: © 2017 |Volume: 8 |Issue: 3 |Pages: 13
ISSN: 1947-8534|EISSN: 1947-8542|EISBN13: 9781522512493|DOI: 10.4018/IJMDEM.2017070103
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MLA

Agarwal, Sugandha, et al. "Image Quality Improvement Using Shift Variant and Shift Invariant Based Wavelet Transform Methods: A Novel Approach." IJMDEM vol.8, no.3 2017: pp.42-54. http://doi.org/10.4018/IJMDEM.2017070103

APA

Agarwal, S., Singh, O. P., Nagaria, D., Tiwari, A. K., & Singh, S. (2017). Image Quality Improvement Using Shift Variant and Shift Invariant Based Wavelet Transform Methods: A Novel Approach. International Journal of Multimedia Data Engineering and Management (IJMDEM), 8(3), 42-54. http://doi.org/10.4018/IJMDEM.2017070103

Chicago

Agarwal, Sugandha, et al. "Image Quality Improvement Using Shift Variant and Shift Invariant Based Wavelet Transform Methods: A Novel Approach," International Journal of Multimedia Data Engineering and Management (IJMDEM) 8, no.3: 42-54. http://doi.org/10.4018/IJMDEM.2017070103

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Abstract

The concept of Multi-Scale Transform (MST) based image de-noising methods is incorporated in this paper. The shortcomings of Fourier transform based methods have been improved using multi-scale transform, which help in providing the local information of non-stationary image at different scales which is indispensable for de-noising. Multi-scale transform based image de-noising methods comprises of Discrete Wavelet Transform (DWT), and Stationary Wavelet Transform (SWT). Both DWT and SWT techniques are incorporated for the de-noising of standard images. Further, the performance comparison has been noted by using well defined metrics, such as, Root Mean Square Error (RMSE), Peak Signal-to-Noise Ratio (PSNR) and Computation Time (CT). The result shows that SWT technique gives better performance as compared to DWT based de-noising technique in terms of both analytical and visual evaluation.

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