We present T-Rex (from the words Threshold and REtineX), a new Milano Retinex implementation, based on an intensity thresholding strategy. Like all the algorithms of the Retinex family, T-Rex takes as input a color image and processes its channels separately. For each channel, T-Rex re-scales the chromatic intensity of each pixel x by the average of a set of pixels whose intensity, weighted by a function of the distance from x, exceeds the intensity of x. The main novelty of this approach is devised by the usage of the pixel intensity as a threshold for selecting the pixels relevant to Retinex. Here we show an application of T-Rex as image enhancer, showing that, as a member of the Retinex family, it equalizes the dynamic range of any input picture and makes its details more evident.

T-Rex: A Milano Retinex Implementation based on Intensity Thresholding

Lecca, Michela;Modena, Carla Maria;
2017

Abstract

We present T-Rex (from the words Threshold and REtineX), a new Milano Retinex implementation, based on an intensity thresholding strategy. Like all the algorithms of the Retinex family, T-Rex takes as input a color image and processes its channels separately. For each channel, T-Rex re-scales the chromatic intensity of each pixel x by the average of a set of pixels whose intensity, weighted by a function of the distance from x, exceeds the intensity of x. The main novelty of this approach is devised by the usage of the pixel intensity as a threshold for selecting the pixels relevant to Retinex. Here we show an application of T-Rex as image enhancer, showing that, as a member of the Retinex family, it equalizes the dynamic range of any input picture and makes its details more evident.
File in questo prodotto:
File Dimensione Formato  
TRex.pdf

non disponibili

Tipologia: Documento in Pre-print
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 2.96 MB
Formato Adobe PDF
2.96 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11582/309675
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
social impact