On RGB images on ImageJ

[Juan Francisco-2]

Dear all:
  I need extract the red channel from image obtained by scanning using RGB (48 bits/16 b per channel, TIFF format); i.e., I need to keep onluy the red channel from the RGB TIF image I have.
  please, hoe could I have this with ImageJ?
  Thank you very much!!
  JFC

 
---------------------------------

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Llamadas a fijos y móviles desde 1 céntimo por minuto.
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[ctrueden]

Hi Juan,

Have you tried the Bio-Formats Importer plugin
(http://www.loci.wisc.edu/ome/formats.html) with the "Specify range
for each series" checkbox checked?

-Curtis

On 3/22/07, Juan Francisco <[hidden email]> wrote:

> Dear all:
>   I need extract the red channel from image obtained by scanning using RGB (48 bits/16 b per channel, TIFF format); i.e., I need to keep onluy the red channel from the RGB TIF image I have.
>   please, hoe could I have this with ImageJ?
>   Thank you very much!!
>   JFC
>
>
> ---------------------------------
>
> LLama Gratis a cualquier PC del Mundo.
> Llamadas a fijos y móviles desde 1 céntimo por minuto.
> http://es.voice.yahoo.com
>

[dscho]

Hi,

On Thu, 22 Mar 2007, Juan Francisco wrote:

> I need extract the red channel from image obtained by scanning using
> RGB (48 bits/16 b per channel, TIFF format); i.e., I need to keep onluy
> the red channel from the RGB TIF image I have.

As far as I know, there is not yet a way to store 16 bit per channel color
images in ImageJ. If you are content with 8 bit per color, then you can do
"Image>Type>RGB Stack", and extract just the first channel (for example by
calling "Image>Duplicate..." _without_ checking "Entire Stack").

Hth,
Dscho

[Wayne Rasband]

> Dear all:
>   I need extract the red channel from image obtained by scanning using
> RGB (48 bits/16 b per channel, TIFF format); i.e., I need to keep
> onluy the red channel from the RGB TIF image I have.
>   please, hoe could I have this with ImageJ?
>   Thank you very much!!

ImageJ opens 16-bits/channel RGB TIFFs as 3-slice 16-bit stacks. You
can extract the red channel using the Image>Duplicate command or by
using the Image>Stacks>Convert Stack to Images command.

ImageJ 1.38n, due next week, opens 48-bit TIFFs as 16-bits per channel
color images. The B&C tool separately adjust the channels of these
images and Save As>Tiff saves them as 48-bit TIFFs. There is an example
48-bit TIFF at <http://rsb.info.nih.gov/ij/images/apple.tif>.

-wayne