Local Contrast Enhancement based on Adaptive Logarithmic Mappings
Jose-Luis Lisani
Jose-Luis Lisani, Local Contrast Enhancement based on Adaptive Logarithmic Mappings, Image Processing On Line, 10 (2020), pp. 43–61. https://doi.org/10.5201/ipol.2020.300

Communicated by Pascal Monasse
Demo edited by Jose-Luis Lisani


This article presents an implementation of the local image enhancement technique proposed in [J.L. Lisani, Adaptive local image enhancement based on logarithmic mappings, IEEE International Conference on Image Processing (ICIP), 2018]. The technique is based on a logarithmic mapping function that is adapted to the luminance characteristics of the neighborhood of each pixel. The method permits to simultaneously increase the luminance in dark regions and decrease it in bright regions. Variants of the originally published method are discussed in terms of contrast enhancement and creation of halo artifacts.