In this work, a new Gibbs energy based compression model
for the display of high-dynamic-range images.
The proposed tone mapping method tends to exploit the biologically-inspired dynamic
retina concept which is herein mathematically expressed via an image
representation based on the specification of the statistical
distributions of the non-local gradient magnitude. In this
framework, the contrast reduction problem is
expressed by a Gibbs energy with non-local pairwise pixel
interactions whose cost function is minimized by a conjugate
gradient descent procedure.
comparison with the bilateral filter