Messages from Usenet group comp.lang.idl-pvwave, compiled by Paulo Penteado
hello all, I want contrast enhancement in order to identify features in solar images. So i used histogram equalisation (hist_equal.pro). But it is not proper for the features near the limb. So do anybody used any other contrast enhancement methods. thanks
On Wednesday, August 31, 2016 at 12:55:52 PM UTC+2, sin wrote: > hello all, > I want contrast enhancement in order to identify features in solar images. So i used histogram equalisation (hist_equal.pro). But it is not proper for the features near the limb. > > So do anybody used any other contrast enhancement methods. > thanks Hi, I don't know about solar images, but here you find loads of options: http://www.idlcoyote.com/ip_tips/xstretch.php Good reference. Cheers, Helder
On Wednesday, August 31, 2016 at 7:01:37 PM UTC+5:30, Helder wrote: > On Wednesday, August 31, 2016 at 12:55:52 PM UTC+2, sin wrote: >> hello all, >> I want contrast enhancement in order to identify features in solar images. So i used histogram equalisation (hist_equal.pro). But it is not proper for the features near the limb. >> >> So do anybody used any other contrast enhancement methods. >> thanks > > Hi, > I don't know about solar images, but here you find loads of options: > http://www.idlcoyote.com/ip_tips/xstretch.php > > Good reference. > > Cheers, Helder thanks a lot helder, it was of great help.