High-dynamic or High Dynamic Range (HDR) images are a very attractive extension compared to conventional digital images. After a brief description of the problem of the dynamics acquisition, the seminar will present the characteristics of HDR images and video and it will treat the problems of the accuracy and limits of the acquisition, and of the use of these images, both with respect to the display and to the characteristics of our visual system.

The Jefferson Memorial in St Louis, MO, USA. HDR built by Darxus from four exposures by Kevin McCoy, then simply contrast reduced to LDR without local tone mapping.

The seminar will present an overview of the pipeline for the processing of HDR images stressing how the above limits are the basis both of the computation space mechanisms of our visual system and of some effective algorithms for their view and how certain techniques are known, although not formalized, since the Renaissance.