TY - GEN
T1 - Contrast enhancement of badly illuminated images based on Gibbs distribution and random walk model
AU - Smolka, Bogdan
AU - Wojciechowski, Konrad W.
N1 - Publisher Copyright:
© Springer-Verlag Berlin Heidelberg 1997.
PY - 1997
Y1 - 1997
N2 - In the paper a new approach to the problem of contrast enhancement of grey scale images is presented. The described method is based on a model, which treats the image as a toroidal, two dimensional lattice, the points of which possess a potential energy. On in this way defined lattice, a regular Markov chain of the positions of this particle can be investigated. The probability of a transition of the virtual particle from a fixed lattice point to a point belonging to its neighbourhood can be determined using the Gibbs canonical distribution, defined on an eight-connectiviy system. The idea of the presented algorithm consists in determininig the stationary probability vector of the Markow chain. The new algorithm registers the visits of the wandering particle and then determines their relative frequencies. It performs especially well in case of images with nonuniform brightness.
AB - In the paper a new approach to the problem of contrast enhancement of grey scale images is presented. The described method is based on a model, which treats the image as a toroidal, two dimensional lattice, the points of which possess a potential energy. On in this way defined lattice, a regular Markov chain of the positions of this particle can be investigated. The probability of a transition of the virtual particle from a fixed lattice point to a point belonging to its neighbourhood can be determined using the Gibbs canonical distribution, defined on an eight-connectiviy system. The idea of the presented algorithm consists in determininig the stationary probability vector of the Markow chain. The new algorithm registers the visits of the wandering particle and then determines their relative frequencies. It performs especially well in case of images with nonuniform brightness.
UR - https://www.scopus.com/pages/publications/84856714263
U2 - 10.1007/3-540-63460-6_127
DO - 10.1007/3-540-63460-6_127
M3 - Conference contribution
AN - SCOPUS:84856714263
SN - 3540634606
SN - 9783540634607
T3 - Lecture Notes in Computer Science
SP - 271
EP - 278
BT - Computer Analysis of Images and Patterns - 7th International Conference, CAIP 1997, Proceedings
A2 - Sommer, Gerald
A2 - Daniilidis, Kostas
A2 - Pauli, Josef
PB - Springer Verlag
T2 - 7th International Conference on Computer Analysis of Images and Patterns, CAIP 1997
Y2 - 10 September 1997 through 12 September 1997
ER -