Contrast Enhancement for Emissive Display Using Histogram Equalization and Bilateral Tone Adjustment

	International Journal of P2P Network Trends and Technology (IJPTT)
	© 2013 by IJPTT Journal
	Volume-3 Issue-3
	Year of Publication : 2013
	Authors : Aruna.L ,S.S.Thamilselvi

Citation

Aruna.L ,S.S.Thamilselvi."Contrast Enhancement for Emissive Display Using Histogram Equalization and Bilateral Tone Adjustment". International Journal of P2P Network Trends and Technology (IJPTT), V3(3):18 - 24  May - Jun 2013, ISSN:2249-2615, www.ijpttjournal.org. Published by Seventh Sense Research Group.

Abstract

By minimizing the objective function based on the convex optimization theory its found that the proposed algorithm achieves contrast enhancement and power saving simultaneously. Then the bilateral tone adjustment technique is used to improve the image quality. BiTA is applied to the luminance, while the color saliency detector calculates the amount of saliency of each pixel with respect to neighbourhood. Saliency produces a saliency map with well defined boundary of salient object. Regions with higher saliency values indicate that the regions have a higher extent of human interest deserve a greater degree of enhancement. Saliency Weighted Contrast Enhancement is then performed based on the adjusted luminance and saliency. The Simulation results demonstrate that the Bilateral Tone Adjustment Technique can reduce power consumption significantly while improving image contrast and perceptual quality.

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Keywords

- image/video quality enhancement, emissive display, histogram equalization(HE), histogram modification(HM), Power saving, probability density function,saliency.