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Re: Improve contrast with ASINHSCL [message #75739] Mon, 11 April 2011 13:57
penteado is currently offline  penteado
Messages: 866
Registered: February 2018
Senior Member
Administrator
On Apr 11, 5:50 pm, Gray <grayliketheco...@gmail.com> wrote:
> On Apr 11, 4:07 pm, Paulo Penteado <pp.pente...@gmail.com> wrote:
>
>> On Apr 11, 4:44 pm, Bringfried Stecklum <steck...@tls-tautenburg.de>
>> wrote:
>
>>> For what concerns dynamic-range stretching in an astronomical context you might
>>> have a look here
>
>>> http://cosmo.nyu.edu/hogg/visualization/
>
>> Interesting. I have been working on related issues, and will be soon
>> trying out the code and reading the papers.
>
> These are very interesting, but not so helpful for me -- I only have 1
> color!  :)

Yes, that is the case with the images I was working most. But multi-
channel mapping is also a problem I have been experimenting with.
Re: Improve contrast with ASINHSCL [message #75740 is a reply to message #75739] Mon, 11 April 2011 13:50 Go to previous message
Gray is currently offline  Gray
Messages: 253
Registered: February 2010
Senior Member
On Apr 11, 4:07 pm, Paulo Penteado <pp.pente...@gmail.com> wrote:
> On Apr 11, 4:44 pm, Bringfried Stecklum <steck...@tls-tautenburg.de>
> wrote:
>
>> For what concerns dynamic-range stretching in an astronomical context you might
>> have a look here
>
>> http://cosmo.nyu.edu/hogg/visualization/
>
> Interesting. I have been working on related issues, and will be soon
> trying out the code and reading the papers.

These are very interesting, but not so helpful for me -- I only have 1
color! :)
Re: Improve contrast with ASINHSCL [message #75741 is a reply to message #75740] Mon, 11 April 2011 13:07 Go to previous message
penteado is currently offline  penteado
Messages: 866
Registered: February 2018
Senior Member
Administrator
On Apr 11, 4:44 pm, Bringfried Stecklum <steck...@tls-tautenburg.de>
wrote:
> For what concerns dynamic-range stretching in an astronomical context you might
> have a look here
>
> http://cosmo.nyu.edu/hogg/visualization/

Interesting. I have been working on related issues, and will be soon
trying out the code and reading the papers.
Re: Improve contrast with ASINHSCL [message #75742 is a reply to message #75741] Mon, 11 April 2011 12:44 Go to previous message
Bringfried Stecklum is currently offline  Bringfried Stecklum
Messages: 75
Registered: January 1996
Member
Gray wrote:
> Hi all,
>
> Can anyone tell me how to improve contrast when I'm asinh scaling and
> image? The tip on idlcoyote.com doesn't really go into it. I'm
> assuming it has to do with the beta parameter, but I'm not sure
> how... Thanks!
>
> --Gray
For what concerns dynamic-range stretching in an astronomical context you might
have a look here

http://cosmo.nyu.edu/hogg/visualization/

Perhaps it helps as well.

regards, Bringfried
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