Re: Annotation on an 8-bit grayscale image

Posted by Gabriel Landini on Sep 22, 2009; 2:21pm
URL: http://imagej.273.s1.nabble.com/Annotation-on-an-8-bit-grayscale-image-tp3691022p3691027.html

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.