Author:	Alessandro Ortis (alessandro.ortis@gmail.com)
Advisor:	Prof. Sebastiano Battiato (battiato@dmi.unict.it)
History:	This plugin was implemented in July 2014
Works with:	8-bit grayscale images
ImageJ's version:	1.47v (used to develop this plugin)
Source:	HomomorphicFilter_.java
Installation:	Download HomomorphicFilter_.java to the plugins folder and compile it with the "Compile and Run" command. Restart ImageJ to add the "HomomorphicFilter" command to the Plugins menu.
Description:	This plugin implements an homomorphic filter using the following equation, from Gonzalez and Woods, 3rd ed. H(u,v) = (gH - gL)(1 - exp(-c(D^2(u,v)/D0^2)) + gL where D(u,v) is the distance from the center of the M-by-N frequency rectangle, gH and gL are the high frequency and low frequency parameters respectively.
Usage:	Here is a brief description: 1) Open an image; 2) Select the filter from the menu bar; 3) Insert the values of gH, gL, c and the cutoff frequency (D0) of the filter; 4) Click on the OK button to apply the filter to the image.
Downloads:	Alessandro Ortis, Estensione del software ImageJ con l’implementazione di un filtro omomorfico
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