Contrast enhancement in images via the product of linear filters

@article{Ramponi1999ContrastEI,
  title={Contrast enhancement in images via the product of linear filters},
  author={Giovanni Ramponi},
  journal={Signal Processing},
  year={1999},
  volume={77},
  pages={349-353}
}
An operator based on Products of Linear Filters is introduced in this Communication to perform image contrast enhancement. Translation invariance and isotropy conditions are derived. The proposed technique avoids noise ampliication and is able to sharpen even small details.