Mutual Information Of Images: A New Approach To Pyramidal Image Analysis
B. Hason, Y.Y. Zeevi · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1988
The similarity measure is defined as the amount of information necessary to transform one image into another. Application of this measure between pyramid elements reveals that significant data-compression, subject to controllable error, can be achieved by saving only the necessary information to pass from the lower-resolution image to its higher-resolution version. Further, this data can be estimated without any side information to obtain a super-resolution effect in images.