Image Edges Strengthening Filter Based Color Filter Array Interpolation
| ||International Journal of Computer Trends and Technology (IJCTT)|| |
|© - September Issue 2013 by IJCTT Journal|
|Volume-4 Issue-9 |
|Year of Publication : 2013|
|Authors :C Mohammed Abdul Malik, B.N.Nagaveni|
C Mohammed Abdul Malik, B.N.Nagaveni"Image Edges Strengthening Filter Based Color Filter Array Interpolation "International Journal of Computer Trends and Technology (IJCTT),V4(9):3282-3286 September Issue 2013 .ISSN 2231-2803.www.ijcttjournal.org. Published by Seventh Sense Research Group.
Abstract:- Most of the digital cameras use color filter arrays instead of beam splitters to capture image data so as to reduce the cost and to gain more efficiency. As a result of this, only one of the required three color samples becomes available at each pixel location and the other two needs to be interpolated. This procedure is called Color Filter Array (CFA) interpolation or demosaicing. So as to improve subjective and objective interpolation quality many demosaicing algorithms have been introduced. We propose an orientation-free edge strength filter and apply it to the demosaicing problem. Output of edge strength filter is utilized both to improve the initial green channel interpolation and to apply the constant color difference rule adaptively. This simple edge method yields visually pleasing results with high CPSNR.
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Keywords :— Color filter array (CFA) interpolation, Edge directed interpolation, orientation-free edge strength filter, demosaicing.