A comparison of the multiscale rethinex with other image enhancement techniques

摘要

The multiscale retinex with color restoration (MSRCR) has shown itself to be a very versatile automatic image enhancement algorithm that simultaneously provides dy-namic range compression, color constancy, and color rendition. A number of algorithms exist that provide one or more of these features, but not all. In this paper we compare the performance of the MSRCR with techniques that are widely used for image enhancement. Specifically, we compare the MSRCR with color adjustment methods such as gamma correction and gain/offset application, historgram modification techniques such as histogram equalization and manual histogram adjustment, and other more powerful techniques such as homomorphic filtering and `burning and dodging'. The comparison is carried out by testing the suite of image enhancement methods on a set of diverse images. We find that thgough some of these techniques work well for some of these images, only the MSRCR performs unviersally well opn the test set.