Memory-efficient and fast implementation of local adaptive binarization methods

This repository implemented Sauvola-alike local adaptive binarization methods in Java. This implementation can binarize a HxW grayscale image in O(HW) time and O(min{H,W}) auxiliary space independent of window size, which is much better than the usual integral image approach. Consult https://arxiv.org/abs/1905.13038 by Chungkwong Chan.