Re: image intensity correction

Posted by Noel BONNET on
URL: http://imagej.273.s1.nabble.com/image-intensity-correction-tp3703695p3703696.html

May be you could have a look at the plug-in
"A_posteriori_shading_correction" at:
http://www.univ-reims.fr/INSERM514/ImageJ

Hope it helps.

Noel


On Mon, 13 Feb 2006 09:43:58 +0100, Guenter Giese
<[hidden email]> wrote:

>Hi all:
>
>a caveat: the plugin mentioned corrects for background (only). If your
>brightness values (signal plus background) are lower in the edges, this may
>be caused by the optical design of the instrument (illumination diminution
>at the edges plus detection diminution, also known as vignetting in
>photography). In this case you would have to apply some kind of
>position-dependent correction implying multiplication or division, not
>position-dependent offset correction.
>
>Is there a plugin doing that?
>
>Guenter
>
>
>
>> -----Original Message-----
>> From: ImageJ Interest Group [mailto:[hidden email]] On
>> Behalf Of marefat
>> Sent: Samstag, 11. Februar 2006 00:16
>> To: [hidden email]
>> Subject: Re: image intensity correction
>>
>> Hi Elena:
>>
>> Thank you very much. It is excellent.
>>
>> Thank you,
>> Yousef
>>
>> On 2/10/06, Elena Kardash <[hidden email]> wrote:
>> > Hi, Joe,
>> >   try this: Process/Subtract Background
>> >
>> > http://rsb.info.nih.gov/ij/docs/menus/process.html#background
>> > the plugin is described here:
>> > http://rsb.info.nih.gov/ij/plugins/background.html
>> >
>> >  it works really nice
>> >
>> > Elena
>> >
>> >
>> > marefat wrote:
>> >
>> > >Hi -
>> > >
>> > >Is there a way to correct for signal non-uniformity across
>> an image.
>> > >
>> > >Thanks
>> > >
>> > >Joe
>> > >
>> > >
>> >
>>
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