Color image enhancement using power-constraint histogram equalization for AMOLED
Hu Cao, Tian Li, Jun Liu, Hui Wang, Songlin Feng · 2015
Emerging active-matrix organic light-emitting diode (AMOLED)-based displays consume different power when displaying different colors, due to their emissive nature. The main objective of image enhancement is to improve the quality of an image to make its visibility better. This paper presents a power-constraint histogram equalization (HE) algorithm in YCbCr space for AMOLED driving. In the proposed algorithm, the power-constraint local histogram equalization (PCLHE) is applied on the Y component. And the traditional histogram equalization is applied on the Cb and Cr component separately. Finally, the algorithm has been implemented on a FPGA platform (DE2-115). The result shows that the power consumption is reduced 21% by using the algorithm.