LCH color space

[Thomas Binder]

Hello

I am a haematologist, now working on staining quality assurance
(Pappenheim-stain)

I do some image analysis using ImageJ (GREAT!!) (RGB HSB)

but how to describe the colorfulness of the images eg using the LCh
color space

please help me

Thomas Binder

[dscho]

Hi Thomas,

On Thu, 16 Feb 2012, Thomas Binder wrote:

> I am a haematologist, now working on staining quality assurance
> (Pappenheim-stain)
>
> I do some image analysis using ImageJ (GREAT!!) (RGB HSB)
>
> but how to describe the colorfulness of the images eg using the LCh color
> space

Have you seen http://rsbweb.nih.gov/ij/plugins/color-transforms.html ?

Ciao,
Johannes

[Gabriel Landini]

On Thursday 16 Feb 2012 17:59:01 Johannes Schindelin  wrote:
> Have you seen http://rsbweb.nih.gov/ij/plugins/color-transforms.html ?

That plugin needs a correction. Lines 550 and 551 should read:

       else if ( gf[q] == var_Max ) c1[q] = ( 1f / 3f ) + del_R - del_B;
       else if ( bf[q] == var_Max ) c1[q] = ( 2f / 3f ) + del_G - del_R;

(there are a few "f" missing in 1 / 3 and 2 / 3 )
Cheers

Gabriel