An Improved Framework for Backlight Scaled Images and Videos
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International Journal of Engineering Trends and Technology (IJETT) | 
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| © 2015 by IJETT Journal | ||
| Volume-22 Number-10 |
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| Year of Publication : 2015 | ||
| Authors : Akhil Paulose, Lintu Liz Thomas, Rahul R Pillai, Chithra Chandran | ||
| DOI : 10.14445/22315381/IJETT-V22P299 |
Citation
Akhil Paulose, Lintu Liz Thomas, Rahul R Pillai, Chithra Chandran"An Improved Framework for Backlight Scaled Images and Videos", International Journal of Engineering Trends and Technology (IJETT), V22(10),488-492 April 2015. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Abstract
Now-a-days, the major problem found in the
portable multimedia devices of today is of maintaining the image
quality under various lighting conditions. The brightness of an
image influences the battery capacity of a device. Reducing the
backlight increases the battery life of these devices. In this paper
an image enhancement algorithm is proposed that enhances an
image at low backlight, by taking the human visual property into
consideration. The just noticeable difference theory (JND) is
applied and an image is decomposed into two layers namely, the
HVS response layer and the background luminance layer. The
operations of the proposed algorithm are performed in the
background luminance layer so that luminance gradient reversal
can be avoided. The algorithm is further extended to enhance
dim backlight videos.
References
[1] Tai-Hsiang Huang, Kuang-Tsu Shih, Su-Ling yeh and Homer
h.Chen,Fellow, “Enhancement of Backlight-scaled Images,” IEEE
transactions on image processing, vol. 22, no.12, December 2013.
[2] H.Wilson,”A transducer function for threshold and suprathreshold
human vision,” Biol.Cybern,vol.38,no.3,pp 171-178,october 1980.
[3] Y.Rao and L.Chen, “A survey of video enhancement
techniques,”J.Inf.Multimedia Signal Process.,vol.3,no 1,pp 71-
79,Jan.2012.
[4] T.H Kim, K.S. Choi and S.J.Ko,”Backlight power reduction using
efficient image compensation for mobile devices,”IEEE
trans.Consum.Electron.,vol.56,no.3,pp.1972-1978,Aug.2010.
[5] L.Cheng,S.Mohatpara,M.E.Zarki,N.Dutt and N.Venkatasubramantan,”A
backlight optimisation scheme for video playback on mobile devices,”
in Proc.Consum.Commun.Netw.Conf.,Jan 2006,pp.833-837.
[6] R.Fattal,D.Lischinski,M.Werman,”Gradient domain high dyanamic
range compression,”ACM Trans.Graph.,vol.21,no.3,pp.249-
256,jul.2002.
[7] Z.Farbman,R.fattal,D.Lischinski and R.Szeliski,”Edge-preserving
decompositions for multi scale tone and detail manipulation,”,ACM
Trans.Graph.,vol.27,no.3,pp.1-7,Aug.2008.
[8] T.-H. Huang,C.t.kao,Y.C.Chen,”A visibility model for quality
assesment of dimmed images,” in Proc.4th IEEE Int.workshop
multimedia Signal Process.,Sep 2012,pp.206-211.
[9] F.Kingdom and B.moulden,”Border effects on brightness:A review of
findings ,models ans issues,”Spatial Vis.,vol no 3,no 4,pp.225-262,Aug
1988.
[10] A .Iranli,W.Lee and M.Pedram,”HVS –aware dyanamic backlight
scaling in TFT-LCD,”IEEE Trans.Very Large Scale Integr.(VLSI)
Syst.,vol.14,no.10,pp.1103-1116,Oct.2006.
[11] J.M Valeton and D.V Norren.”Light adaptation of primary cones:An
analysis based on extracellular data,”Vis.Res.,vol.23,no 12,pp.1539-
1547,Dec.1983.
[12] A.Anitha and B.Rajesh Kumar, “ A new image enhancement algorithm
using JND and histogram equilisation”,IJETT,volume 9 number 6
march 2014.
Keywords
Backlight, JND, HVS, background luminance.