Frankle-McCann Retinex by Shuffling

In this paper, our aim is to present an alternative to the ratio-product term of Frankle-McCann Retinex by manipulating shifting directions and the number of iterations, which is a major obstacle in applications, keeping the quality of the result images. For this, we focus on replacing the shifting mechanism with a symmetrical shuffling method that partitions all given regions in each channel image into two parts per region and then exchanges each other in two pre-determined directions. This processing has the advantage in that there is no need to consider shifting directions at a step, so the complexity of the algorithm is reduced, except for the shuffling cost. From the experiments on Barnard’s four datasets, the results showed that our expectation can be met by the proposed method.