Enhance brightness/contrast of a selected region of interest

[KerL]

How do I enhance the contrast/brightness of only my selected region of interest and not the entire image. I am trying to use freehand selection tool, but unsure how to proceed afterwards.

Thanks in advance,

KL

[gankaku]

Hi Kevin,

Note that in scientific images a selective enhancement is generally seen
extremely critical (actually is normally not accepted) and should only be
done if there is a good and reason for which you also can scientifically
justify in the methods part.
Having said this and since I do not know what exactly you need the
enhancement in a selection for, here one possibility how to achieve this.

When you create your freehand selection you can simply use the
Brightness/Contrast dialog and adjust you contrast as desired (equivalent
you could use the >Process >Enhance Contrast funtion (with the "update all
when normalizing" checkbox de-activated). If you hit the "Apply" button in
the Brightness/Contrast dialog the changes you made are only applied to
your selection and the rest is reset to original.

regards,
Jan

2015-01-14 21:04 GMT+01:00 KerL <[hidden email]>:

> How do I enhance the contrast/brightness of only my selected region of
> interest and not the entire image. I am trying to use freehand selection
> tool, but unsure how to proceed afterwards.
>
> Thanks in advance,
>
> KL
>
>
>
> --
> View this message in context:
> http://imagej.1557.x6.nabble.com/Enhance-brightness-contrast-of-a-selected-region-of-interest-tp5011220.html
> Sent from the ImageJ mailing list archive at Nabble.com.
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>

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