Re: RGB to CMYK

Posted by Gary Chinga on Nov 05, 2006; 11:01am
URL: http://imagej.273.s1.nabble.com/RGB-to-CMYK-tp3688100p3688110.html

If you make a search for "RGB to CMYK" in the list archives you will  
find the following post with a plugin for simple conversions:

https://list.nih.gov/cgi-bin/wa?A2=ind0403&L=IMAGEJ&P=R1754&I=-3

Gary,





On Nov 5, 2006, at 1:01 AM, Duane & Julie wrote:

> Hmmm.
>
> For which RGB phosphors?
> For what white point?
> For which CMYK inks?
> For what substrate?
>
> If you don't care about any of that, it's pretty straight-forward.  
> The 1-Color thing will probably work OK, and you can do simple  
> under-color removal for the black.  I've got some code around  
> somewhere that does that, and halftones it as well if you wish.  I  
> assume you want this for printing, or print proofing?
>
> I don't have an ImageJ plugin, but I do have the code that I  
> mentioned above.  If you can tell me why it's a good idea, I might  
> be convinced to create a plugin.
>
> Cheers,
>
>    duane
>
> On Nov 3, 2006, at 1:07 PM, Rowland, Kevin wrote:
>
>> Hi all,
>>
>>
>>
>> Is there a way to convert an RGB image to a CMYK image in Image J?
>>
>>
>>
>> Thanks,
>>
>> Kevin
>
>