1. A method for enhancing local contrast of an image, wherein the method comprises: receiving a component of the image; computing wavelet coefficients based on a wavelet decomposition of the received component; computing a first threshold and a second threshold based on a brightness of the image; determining at least three subsets of wavelet coefficients based on the first threshold, the second threshold and the computed wavelet coefficients; modifying the at least three subsets via applying a sharpening transformation on at least one of the at least three subsets; recombining the at least three subsets into final wavelet coefficients; and reconstructing a new component based on the final wavelet coefficients.