FOLI technique algorithm for real-time efficient image processing

Abstract

We proposed an image enhancement algorithm with less computational complexity than the existing one. In the proposed blocks for algorithm, the decimation filter provides the reduction of computational complexity using spatial reduction methods. The contrast enhancement block employs a probability density value (PDV) in order to control the excessive change of brightness. Cumulative distribution function (CDF) is estimated by using first order linear interpolation (FOLI) for real time processing. The colour enhancement block carries out saturation enhancement using saturation extension by maximum saturation enhancement (MSE) methods. It has been implemented in FPGA (field programmable gate array), and we have made an evaluation board for experiment. As compared to the conventional algoriths, the proposed algorithm provides better performance and lower computational complexity. © 2014 Springer-Verlag Berlin Heidelberg.