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International Journal of Technology Enhancements and Emerging Engineering Research (ISSN 2347-4289)
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IJTEEE >> Volume 1 - Issue 4, November 2013 Edition



International Journal of Technology Enhancements and Emerging Engineering Research  
International Journal of Technology Enhancements and Emerging Engineering Research

Website: http://www.ijteee.org

ISSN 2347-4289



Brightness Preserved Resolution Enhancement Using DWT-SWT Technique

[Full Text]

 

AUTHOR(S)

Vismi V, Suvi V

 

KEYWORDS

Key words: Discrete wavelet transform (DWT), Stationary wavelet transforms (SWT),bicubic interpolation, Brightness Preserving Bi Histogram Equalisation(BBHE)

 

ABSTRACT

Abstract: The paper "Brightness Preserved Resolution Enhancement Using DWT-SWT Technique" makes use of both wavelet and brightness preserving technique.The proposed technique focussing on increasing the resolution as well as preserving the brightness in the images. First DWT SWT [1]decomposes the input image separately. Thus it generates a pair of LL, LH, HL, HH. The bands from DWT undergo interpolation namely bicubic inorder to attain the size of SWT bands. The LL, LH, HL, HH from SWT need not interpolate as it has the same size as that of the input image. Then combine each of the high frequency subbands and generate estimated LH, HL, HH. Then interpolate the input image for getting the LL band. These all have to combine by using IDWT. Then perform Brightness Preserving Bi Histogram Equalisation (BBHE)[2].

 

REFERENCES

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[2] Komal Vij and Yaduvir Singh,”Enhancement of image using histogram processing techniques”, Int. J. Comp. Tech. Appl., Vol 2(2), 309-313

[3] Gholamreza Anbarjafari and Hasan Demeril,” Image super resolution based on interpolation of wavelet domain high frequency subbands and spatial domain input image ”, ETRI J., vol. 32, no. 3,pp.390-394, jun.2010

[4] Hasan Demirel and Gholamreza Anbarjafari, ”Discrete Wavelet Transform Based Satellite Image Resolution” ,IEEE image processing, vol.20, no. 5, May 2011

[5] H. Demirel and G. Anbarjafari,“ Satellite image resolution enhancement using complex wavelet transform ”, IEEE Geosci. Remote Sens. Lett., vol. 7, no. 1, pp. 123–126, Jan. 2010

[6] Tinku Acharya and Ping-Sing Tsai, “Computational Foundations of Image Interpolation Algorithms”, ACM Ubiquity, Vol. 8, 2007