[argyllcms] Re: Rgb profile
- From: Nikolay Pokhilchenko <nikolay_po@xxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Thu, 24 May 2012 16:12:44 +0400
Did You try to convert Your images in 16-bit per channel mode?
Try this workflow:
1. Convert original image into 16-bit per channel format.
2. Convert the image into printer device profile by cctiff ArgyllCMS utility.
You should get the 48-bit per pixel RGB image.
3. Quantize the resulting RGB image into 24-bit per pixel format with mandatory
dithering use.
4. Take a look at result. Print it (if reasonable).
Thu, 24 May 2012 13:20:20 +0200 от Dimitrije Zivkovic <migraf015@xxxxxxxxx>:
Hi Nikolay
No I've not misunderstood you, I just do that because of device profile, but I
also make like you tell me, and I've got same results, not exactly the same,
little bit better gradation, but also white is not white, this is the point.
I can't unsterstand what's happend. For me realy strange.
Maybe it's problem with Argyll command.
PLEASE HELP!!!
DIMITRIJE
On May 24, 2012, at 9:55 AM, Nikolay Pokhilchenko wrote:
Dimitrije, You've misunderstood me slightly. I've recommend -qu -bh, not -qh
-bu. The first have more sense than the last and is much faster.
Have You dithering enabled in Your workflow?
Thu, 24 May 2012 08:33:44 +0200 от Dimitrije Zivkovic <migraf015@xxxxxxxxx>:
Hi Nikoly
Color space from device is too different from regular one. That's why I have to
use -bh or -bu, and if I use -qh -bu the time for compute is too big, and I've
got always massage for memory low or something.
But that is not big problem. When I make CMYK profile, everything is ok, I mean
with Argyll, but when I make any RGB profile I've got colored background.
Before I use original program from X-rite (Munki) everything seems ok.
So does anyone get similar results with RGB profile?
Dimitrije Zivkovic
On May 24, 2012, at 8:24 AM, Nikolay Pokhilchenko wrote:
Hi Dimitrije
Do You have the particular reason to compute high resolution backward table
(-bh) having standard resolution of the forward table (-qm)?
I didn't know wither it is the problem reason or not but...
As I'm understanding the profile compute process, the backward table compute is
performing on the forward table compute result. So, If You have normal
resolution forward table, there is no sense to compute higher resolution
backward table.
As I've noticed, the computing of the forward table is much more faster than
the backward one. So You can try "-qh" or even "-qu -bh" without very much
computing time increase.
Thu, 24 May 2012 07:36:24 +0200 от dimitrije zivkovic <migraf015@xxxxxxxxx>:
Hi everybody
I have problem with making RGB profile. I always get colored background, white
is not white. I have the same problem on several printers.
Command is always the same:
"colprof -v -D"name" -qm -bh -cmt -dpp -ssRGB.icm -Oname"
please advice
Dimitrije Zivkovic
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