International Journal of Image, Graphics and Signal Processing (IJIGSP)
IJIGSP Vol. 7, No. 11, 8 Oct. 2015
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Enhancing Colors of a Digital Image Using Clock Algorithm
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Author(s)
Pooja Gupta
1,*
Kuldip Pahwa
1
Index Terms
Digital image processing, Color enhancement, Clock algorithm, Pixel color enhancement
Abstract
Several commercial algorithms have been developed for color enhancement of a digital image; however, none of these are completely able to preciously process a digital image. Therefore, this article focuses upon pixel-by-pixel processing, especially in the field of color enhancement of digital image. The enhancement is performed on individual pixel by taking information from its neighborhood. This has been implemented using a clock algorithm. Clock algorithm enhancement is implemented on human visual system based hexagonal sampled pixels instead of square ones. Enhancement of each pixel is performed both locally and globally. The local enhancement is done by using wavelet normalization. It obtains different bands of information as it enables localizing the signal information both in time and frequency domain. The global enhancement is obtained through Gabor filter. The Gabor filter extracts region based information and combined information is used to recognize region of interest also Gabor filter justifies biological findings in vision system. The results after enhancement provide better visibility of minor information and finally the enhanced image is obtained.
Cite This Paper
Pooja Gupta, Kuldip Pahwa,"Enhancing Colors of a Digital Image Using Clock Algorithm", IJIGSP, vol.7, no.11, pp.9-15, 2015. DOI: 10.5815/ijigsp.2015.11.02
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