Color Image Enhancement by an Integral Mask-filtering Approach Employing Nonlinear Transfer Function


We demonstrate a brand-new method to sharpen a color image by using an integral mask-filtering technique. The derivatives between the target pixel and its neighbors are transferred by the cubic root function instead of the traditional linear one. The obtained final image has clearer fine characteristics along with much less overshooting.

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C. Yang, "Color Image Enhancement by an Integral Mask-filtering Approach Employing Nonlinear Transfer Function," Optics and Photonics Journal, Vol. 3 No. 2B, 2013, pp. 79-82. doi: 10.4236/opj.2013.32B020.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] W. K. Pratt, “Digital Image Processing,” Wiley, New York, 2001, pp. 278-284. doi:10.1002/0471221325
[2] R. C. Gonzalez and R. E. Woods, “Digital Image Processing,” Prentice Hall, New Jersey, 2001, pp. 125-132.
[3] C. C. Yang, “Improving the Sharpness of An Image with Non-Uniform Illumination”, Optics and Laser Technology, Vol. 37, 2005, pp. 235-238. doi:10.1016/j.optlastec.2004.03.015
[4] C. C. Yang, “Image Enhancement by Modified Contrast-Stretching Manipulation”, Optics and Laser Technology, Vol. 38, No. 2006, pp. 196-201. doi:10.1016/j.optlastec.2004.11.009
[5] C. C. Yang, “Image Enhancement by Adjusting the ConTrast of Spatial Frequencies,” Optik, Vol. 119, 2008, pp. 143-146. doi:10.1016/j.ijleo.2006.07.011
[6] C. C. Yang, “Image Enhancement by the Modified High-Pass Filtering Approach”, Optik, Vol.120, 2009, pp. 886-889. doi:10.1016/j.ijleo.2008.03.016
[7] C. C. Yang, “A Modification for the Mask-Filtering Approach by Superposing Anisotropic Derivatives in An Image,” Optik, Vol.122 , 2011, pp. 1684-1687. doi:10.1016/j.ijleo.2010.10.026
[8] C. C. Yang, “Color image enhancement by a modified mask-filteringapproach,” Optik, Vol. 123, 2012, pp. 1765-1767. doi:10.1016/j.ijleo.2011.11.057
[9] C. C. Yang, “Improving the Overshooting of A Sharpened Image by Employing Nonlinear Transfer Functions in the Mask-Filtering Approach,” Optik, in press.

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