An Analysis and Implementation of the Shape Preserving Local Histogram Modification Algorithm
Jose-Luis Lisani
→ BibTeX
@article{ipol.2018.236,
    title   = {{An Analysis and Implementation of the Shape Preserving Local Histogram 
Modification Algorithm}},
    author  = {Lisani, Jose-Luis},
    journal = {{Image Processing On Line}},
    volume  = {8},
    pages   = {408--434},
    year    = {2018},
    doi     = {10.5201/ipol.2018.236},
}
% if your bibliography style doesn't support doi fields:
    note    = {\url{https://doi.org/10.5201/ipol.2018.236}}
published
2018-12-07
reference
Jose-Luis Lisani, An Analysis and Implementation of the Shape Preserving Local Histogram Modification Algorithm, Image Processing On Line, 8 (2018), pp. 408–434. https://doi.org/10.5201/ipol.2018.236

Communicated by Jean-Michel Morel, Miguel Colom
Demo edited by Jose-Luis Lisani

Abstract

In this paper we describe the implementation of the algorithm for local contrast enhancement published by Caselles et al. in 1999. This algorithm was the first designed explicitly to increase the contrast while preserving the so-called 'shape structure' of the image, that is, its set of level sets. According to the mathematical morphology school, artifacts are created when this structure is modified. The original algorithm is described and also two alternative implementations are proposed, which limit the over-enhancement of noise.

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