Annotation on an 8-bit grayscale image

[vmunukutla]

Hi,

When I annotate on an 8-bit grayscale image in Imagej, annotations are
displayed in gray color. Can anybody tell me what should I do If I want to

see the annotations in a color other than gray.

Thanks in advance

 

Regards,

Phanikanth

 

[John Oreopoulos]

First convert the image to RGB color and then make sure the color you  
want to annotate with is chosen by double clicking on the color  
picker tool. Now when you write text, draw arrows, etc. they should  
show up in the color you want.

John Oreopoulos


On 22-Sep-09, at 10:06 AM, Phanikanth wrote:

> Hi,
>
> When I annotate on an 8-bit grayscale image in Imagej, annotations are
> displayed in gray color. Can anybody tell me what should I do If I  
> want to
>
> see the annotations in a color other than gray.
>
> Thanks in advance
>
>
>
> Regards,
>
> Phanikanth
>
>

[Gluender-3]

What do you mean by annotation?

>Hi,
>
>When I annotate on an 8-bit grayscale image in Imagej, annotations are
>displayed in gray color. Can anybody tell me what should I do If I want to
>
>see the annotations in a color other than gray.
>
>Thanks in advance
>
>Regards,
>

Phanikanth

If you mean the "Text Tool", then you simply have to change the
foreground color as with every other application.

HTH
--

                   Herbie

          ------------------------
          <http://www.gluender.de>

[Gabriel Landini]

On Tuesday 22 September 2009  15:11:08 Phanikanth wrote:

> When I annotate on an 8-bit grayscale image in Imagej, annotations are
> displayed in gray color. Can anybody tell me what should I do If I want to
> see the annotations in a color other than gray.

Well, by definition, if it is a greyscale image, you can't embed colour in the
pixel data...  (unless you manage to make the annotation with an unused entry
of the LUT and edit its colour).

A way round is to convert the image to rgb first and use a non-grey foreground
colour, but that is not a greyscale image anymore.

There might be some other way of using an overlay, (ObjectImage comes to
mind).

G.

[Joel Sheffield]

Hi,

The problem is that the appearance of an 8 bit image is controlled by
the LUT.  If the LUT contains gray values from 0 to 255, every
"color" will appear as gray.

There are two possible solutions.
1.  change your LUT from gray scale to gray scale with either the 0
or the 255 value set at a color that you like.  Then set the
foreground color either to 0 or 255.  You can do this by going to
Image>Colors>Edit LUT.  Of course, if you do this, you will lose
access to the 0 or 255 value pixels in your original image.

2.  Change your image to RGB.  Image>type>RGB

> >Hi,
> >
> >When I annotate on an 8-bit grayscale image in Imagej, annotations
> are
> >displayed in gray color. Can anybody tell me what should I do If I
> want to
> >
> >see the annotations in a color other than gray.
> >
> >Thanks in advance
> >
> >Regards,
> >
> Phanikanth
>
> If you mean the "Text Tool", then you simply have to change the
> foreground color as with every other application.
>
> HTH
> --
>
>                    Herbie
>
>           ------------------------
>           <http://www.gluender.de>

--
Joel B. Sheffield, Ph.D.
Biology Department, Temple University
1900 North 12th Street
Philadelphia, PA 19122
[hidden email]  
[phone], fax [phone]
http://astro.temple.edu/~jbs

[Jane-8]

 Question:

I tried to add the plug-in "stack reverser". But I got the error message:
========================================================================
The jar file "Stack_Reverser.class" couldn't be launched.  Check the Console for possible error messages.  
========================================================================


any idea?  Thanks!

Jane


     

[Wayne Rasband]

 > Question:
 >
 > I tried to add the plug-in "stack reverser". But I got the error
message:
 >  ============================================
 > The jar file "Stack_Reverser.class" couldn't be launched.
 > Check the Console for possible error messages.
 >  ============================================
 >
 >
 > any idea?  Thanks!

The Stack Reverser plugin is built into the ImageJ 1.43h daily build as
the Image>Transform>Flip Stack command.

-wayne

[Antoinette]

Adding annotation to image or document page with a simple image annotator; no matter you are non-professional end users or professional developers, you are able to use this image annotating tool from an third party to create and draw more than ten kinds of annotating shapes on image or document page. You also can burn the annotation object with source image permernantly.