Hi Marti,
I work on display stuff for an image manipulation programm under
*nix/mac/win in C. I have to display there 8bit_int - 32bit_floats, so I
hope the 16bit integers precission of lcms is a good joice for this task.
I read Your documentation and the tutorial and remaining with an hole
in my u
Hi Marti,
I work on display stuff for an image manipulation programm under
*nix/mac/win in C. I have to display there 8bit_int - 32bit_floats, so I
hope the 16bit integers precission of lcms is a good joice for this task.
I read Your documentation and the tutorial and remaining with an hole
in my u
Hi,
I wanna convert from RGB to Lab and back.
What goes wrong with my data?
C-code sample is attached.
thanks,
Kai-Uwe
// test programm
// 1. arg = red
// 2. arg = green
// 3. arg = blue
// 05.02.2003 Kai-Uwe Behrmann
#include "lcms.h"
int main(int argc,
Hi,
Thanks for so quickly answering.
Am 05.02.03, 11:21 +0100 schrieb Martí Maria:
>
> Hi,
>
> > I wanna convert from RGB to Lab and back.
> > What goes wrong with my data?
>
> If you declare buffer as being WORD:
>
> > unsigned short InputBuffer[3];
> > unsigned short OutputBuffer[3];
>
> Then
Sorry, now I read the TIFF-6.0 specification.
For Lab -> a and b can be + and -.
That should explain what happend.
For only little expierienced in CMM, like me, much to learn.
ciao
Kai-Uwe
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Hi,
How is the value range of the float Lab's?
What should I deliver to cmsDoTransform()?
double[3] Lab; //L = 0..100
//a = -0.5 - 0.5 / -127.0 - +127.0
//b = -0.5 - 0.5 / -127.0 - +127.0
(Internally I have to store all three samples as flo
(Seems not to have been arrived)
> Hi,
>
> > How is the value range of the float Lab's?
> > What should I deliver to cmsDoTransform()?
>
> The range of Lab as given by cmsCreateLabProfile() is :
>
> CIELAB (16 bit) L*0 -> 100.0 0x -> 0xff00
> CIELAB (16 bit) a*
Am 06.02.03, 19:47 +0100 schrieb Martí Maria:
...
> >I use:
> > f32Lab[0] = src[0] * 100;// CIE L
> > f32Lab[1] = (src[1] - 0.5 ) * 256 ; // CIE a
> > f32Lab[2] = (src[2] - 0.5 ) * 256 ; // CIE b
> > cmsDoTransform(hTrans_f32lab_u8rgb, f32Lab, u8RGB, 1); .
The encoding of src
> Hi,
>
> > How is the value range of the float Lab's?
> > What should I deliver to cmsDoTransform()?
>
> The range of Lab as given by cmsCreateLabProfile() is :
>
> CIELAB (16 bit) L*0 -> 100.0 0x -> 0xff00
> CIELAB (16 bit) a*-128.0 -> +127.996 0x000
Am 06.02.03, 20:20 +0100 schrieb Martí Maria:
> Hi
>
> > The encoding of src is double with an range of 0.0 - 1.0 for each of the
> > three samples. My most interesst is using floats with at least 16bit.
>
> Still is unclear to me how you get this 0..1.0 encoding. Are you reading it
> from tiff ?
Hi all,
I have the problem to maintain old RGB datas and want to switch ( with
help of lcms ) to Lab. The user opens an RGB works in Lab on the datas and
saves in RGB. After some opens - savings I would expect an increasing
error in the colors. As far as understood is perfect conversion not
availa
Hi Martí,
I was playing once longer with floats and expect now somewhere an
bitshift in the lcms-1.10(beta) code.
The mapped values from 0.0->1.0 ... 0.0->128.0 + -128.0->0.0 worked only.
It confuses me a little bit.
Could it belong to an compiler error? :
cmsio1.c: In function `AdjustEndianessArr
Martí,
Sorry for any unconvinience. After reading many sites this evening it
seems to me, I loaded CIELab and had it present like ICCLab (signed versus
unsigned data). That would explain really good what happend. The problem
was not connected to lcms.
Kai-Uwe
-
Hi Bob,
compiles as usual under linux suse8.1 gcc3.2.3 .
Nearly all files have been set the executeable flag. This is unusually for
unix and should be avoided - the original package have not set these
flags.
Despite of the fine working of the scripts, I would like to download the
smaller package on
Am 11.06.03, 10:07 -0500 schrieb Bob Friesenhahn:
> > Nearly all files have been set the executeable flag. This is unusually for
> > unix and should be avoided - the original package have not set these
> > flags.
>
> The released lcms-1.10.tar.gz file I downloaded from the littlecms web
> site has
Hi,
lcms-1.11 compiles with gcc-3.2.3 and glibc-2.3.2 under linux.
Nearly all files are set executeable in the tar.gz . I attach an ls of the
tar.
thanks
Kai-Uwe Behrmann
Am 09.09.03, 10:23 +0200 schrieb Marti Maria:
> Dear lcms users
>
> Due a recent Job shift I have been very busy l
for CIE Lab? - as unassociated alpha?
I know this matter is far away from dayly used RGB, but Lab is
requested more and more, and I want to produce exchangeable files.
thanks
Kai-Uwe Behrmann
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Your utilities?
Kai-Uwe Behrmann
Am 24.09.03, 10:44 +0200 schrieb Marti Maria:
> Hi,
>
> Just a guess, here are people more knowleableon TIFF that me , but
> this seems a case where unassociated alpha could apply...
>
> Photoshop 7 saves ExtraSamples tag as EXTRASAMPLE_UNSPE
Hi,
can somebody send me offline an Lab tiff with alpha coming from PS7 or
provide an link to such image. I would like to get an visual feedback of
what I want do merge in tifficc.
thanks
Kai-Uwe Behrmann
Am 24.09.03, 14:36 -0700 schrieb Chris Cox:
> Yes, that is an unfortunate omiss
output profile.
I programm for free,
and so the profile included into an open source package can not be payed.
regards
Kai-Uwe Behrmann
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Does SourceForge.net help you be more productive
rary to easy plug-in,
Marti Maria for his easy to work with CMS library and the many options,
which I want furthermore to explore,
Robin Rowe for its constant interesst in CMS and the openess of cinepaints
development and
William D. Tallman, for his patiance in testing and bugfinding.
Kai-
out how to handle
values of over paper white? This would be interessting for HDR scenes.
Many thanks
Kai-Uwe Behrmann
---
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Does SourceForge.net help you be more productive? Does it
help
havior,
> but it is theoretically possible.
>
>
> Best regards, and thanks again for the testing.
> Marti Maria
> The little cms project
> http://www.littlecms.com
> [EMAIL PROTECTED]
>
>
>
>
> - Original Message -
> From: "Kai-Uwe Behrmann" <[EMAIL P
Marti,
Am 03.12.03, 16:35 +0100 schrieb Marti Maria:
> I've managed to set correct permissions. Seems latest versions of Cygwin does
> support atributtes too. So, many thanks for point this
> out.
Thanks for changing this.
> Regarding floating point, I really appreciate any contribution. But I
Hi,
I like to do optimized standard transformations outside lcms.
Are the conversions between PCS XYZ <-> Lab and from PCS <-> sRGB
matrix based? So it would be simple to do the math in the application.
Is this approach possible?
If yes, where can I find these matrixes? Are they publically availa
Hi,
first thanks for the quality work on the lcms library, Marti! I showed an
calibrated print on the Chemnitzer Linuxtag and was unable to detect any
failures on an modern state of art printer. Gray cloud regions were very
constant, very much better than the manufacturer provided sample prints.
P
ms tries to load the
tables and gives following messages via valgrind:
gamma[0] = cmsReadICCLut( hLinear, icSigAToB0Tag);
gives something back but I can not see the tables.
Can You take a look at the link_profile?
Kai-Uwe
> Hope this helps,
> Marti.
>
>
> Kai-Uwe Behrmann <[E
Marti,
ICC2LCMS is used as well outside tifficc.c . (I have accidentialy
createt my own version in cinepaint.)
Can You put in one of the next releases the reverse of
LCMSAPI icColorSpaceSignature LCMSEXPORT _cmsICCcolorSpace(int OurNotation);
Maybe calling the reverse _cmsLcmsColorSpace .
As well
Hi,
I read the Eye One color measurement device can been used for
device calibration. Did somebody us it to measure real world colors and
intensities? Is it useable for reflective measuring like paintings.
Marti,
do You have plans to support linux with Your new profiler. I think there
is an deman
Hi,
thanks.
Your snippet brings me a step further. Everything is now visible.
--
Kai-Uwe
Am 13.03.04, 15:27 +0100 schrieb Marti Maria:
> There is a small mistake here. cmsReadICCLut is supposed to return
> a LUT structure, which is not a gamma table.
>
> Try this:
>
> LPLUT Lut = cmsReadICCLu
Am 15.03.04, 15:17 - schrieb John Cupitt:
> Hi Kai-Uwe,
>
> Kai-Uwe Behrmann wrote:
> > I read the Eye One color measurement device can been used for
> > device calibration. Did somebody us it to measure real world colors and
> > intensities? Is it useable fo
Usually the scribus icc folder is not related to lcms. Scribus uses lcms
as library. So lcms has no control over file locations.
Better You post to the scribus mailing list to get out theyre correct
icc path.
To detect available profiles for any application is not yet implemented
for linux. Scrib
Hi,
thanks for the copyright tag now interfaced. Additionaly I would like to
customize the whitepoint tag description on my own. Marti, can You
therefore please remove the "Whitepoint: " string in
_cmsIdentifyWhitePoint for the next release?
The new integer routines seems to have problems with li
Hi,
thanks for the copyright tag now interfaced. Additionaly I would like to
customize the whitepoint tag description on my own. Marti, can You
therefore please remove the "Whitepoint: " string in
_cmsIdentifyWhitePoint for the next release?
The new integer routines seems to have problems with li
Hi,
an conversion from CMYK->sRGB is very red, looks like an signed unsigned
issue. It seems be only a special kind of profiles is affected.
regards
Kai-Uwe
Am 21.04.04, 12:43 +0200 schrieb Marti Maria:
> Hi,
>
> I've put precompiled binaries for Win32 and Mac for incoming lcms-1.13 here:
>
> h
Marti,
I found something in my own app. 1.12 seems to be more tollerant with my
bug.
CHANNELS_SH(3) EXTRA_SH(1) causes my problem with 8-bit CMYKs. For
16-bit lcms let it pass. So I was irritated and thought it has something
to do with the profile.
Anyway, setting CHANNELS_SH(4) EXTRA_SH(0) is the
Am 11.05.04, 17:04 +0800 schrieb [EMAIL PROTECTED]:
> > What are Your experiences with camera calibration?
> The procedure to generate ICC profile for both scanner and DSC should be
> same, but the problem is scanner use fixed illuminant, DSC may change
> illuminants,
> that means you can generat
Am 19.05.04, 02:16 +0200 schrieb Yvan Richard:
...
> I know that we can do ICC Color Profile for more than
> eight channels, but I think that Manufacturer 'HP, Canon
> Epson' don't do it. I take a look on the stylus photo R300
> printer driver and find an ICC color profile, but it's an input
> colo
Am 24.05.04, 10:58 -0700 schrieb Troy Wu:
> Unfortunately, being able to measure output values only solves half the
> problem. For a full color-correction workflow, I need to be able to
> soft-proof, which requires that my monitor is profiled and calibrated.
> To do so requires a colorimeter--or
Am 26.05.04, 00:23 +0200 schrieb Gerhard Fuernkranz:
> For instance, Avantes (http://www.avantes.com) provides a Linux SDK for
> their Spectrocam. Basically it appears to work, but IMO it's nasty that
> even the low level API library (distrubuted as binary) is compiled with
> g++, although it appe
black, and
this disabling color management. Responsible software should add if this
is the users intention.
> CRTs. Applications should always allow the user to explicitly specify
> the input color space to use.
thanks for sharing Your thoughts
Kai-Uwe Behrmann
Am 26.05.04, 18:11 +0200 schrieb Gerhard Fuernkranz:
> I guess it's a very similar situation as with Windows GDI printers. The
> manufacturers attempt to make the instrument as dumb as possible and to do
> the more complicated computations in software on the host, since this makes
> the devices ch
Am 26.05.04, 20:07 +0800 schrieb Stuart Nixon:
> ICC/CMS under Linux
> ---
>
> To get widespread usage of ICCs and CMS engines under Linux, we
> need a couple of things:
>
> 1.A standard system profile directory. I believe
> a directory has already been proposed althoug
Am 24.05.04, 10:32 - schrieb [EMAIL PROTECTED]:
>
>
> Gerhard Fuernkranz <[EMAIL PROTECTED]> said:
>
> > Karl Heinz Kremer schrieb:
> >
> > > ... and using LCMS in Gimp's display layer was too slow.
> >
> > Yes, LCMS unfortunately is a bit slow (sorry to say that, Marti) :-(
>
> No offence, it
Hi,
as far as I understand CIE*Lab is an way to describe colors, which may or
may not be physically existent.
My question is which is the colorspacebody of physically ideal
refrective media? What is the belonging gamut of Lab?
Is it possible to shrink such an colorspacebody to an special reflectiv
Hi Peter,
I am not very firm with static linking, but could it be You need to feed
-llcms intead of -lcms to the linker?
Hope this helps
Kai-Uwe Behrmann
Am 01.07.04, 15:27 +0800 schrieb Peter:
> Hello Marti,
>
> I have compile lcms v1.1.3 on Mac OS X (10.3.4 + Dev Tools 1.1), and i
target I used was the C1 from Wolf Faust. Look at www.coloraid.de for
more information. It is an A4 non glossy IT8.
regards
Kai-Uwe Behrmann
Am 01.07.04, 13:30 +0200 schrieb Mikolaj Tutak:
> Hi!
>
> I shot some Kodak Color taget with my EOS 300D, then I converted RAW's into
> 48bp
sional CMYK printing spaces are ingamut of the
> photogamut-profile.
>
> :-) Jan-Peter
>
>
> >
> >> Kai-Uwe Behrmann wrote:
> >>
> >>> as far as I understand CIE*Lab is an way to describe colors, which may or
> >>> may not be physically ex
ynamic library only.
>
> Peter.
>
>
>
> On Jul 1, 2004, at 8:40 PM, Kai-Uwe Behrmann wrote:
>
> > Hi Peter,
> >
> > I am not very firm with static linking, but could it be You need to
> > feed
> > -llcms intead of -lcms to the linker?
&g
Hi,
what is the purpouse of the chrm - chromaticityType encoding tag?
I found it in several profiles created by lcms profilers. Arent the
[r,g,b,k]XYZ tags allready enough?
Marti,
I am unshure with the above tag. I read the number of device channels and
the encoded phosphors as uint16Numbers (2 by
e not that convenient.
kind regards
Kai-Uwe Behrmann
+ imaging developer / panoramas
+ color management
+ email: [EMAIL PROTECTED]
---
SF.Net email is
tures for 1.14, but those can wait as well...
>
> Opinions?
>
> Regards,
> Marti.
>
>
> Kai-Uwe Behrmann <[EMAIL PROTECTED]> said:
>
> > Hi,
> >
> > while valgrind-ing in CinePaint, I have many messages about memory access
> > errors. - Valgrind is t
rer(h));
>
> Is that correct?
>
> Thanks!
> Marti.
>
>
> - Original Message -
> From: "Kai-Uwe Behrmann" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Cc: "Lcms Liste" <[EMAIL PROTECTED]>
> Sent: Tuesday, August 10, 2004
+R for only $33
> Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift.
> http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285
> ___________
> Lcms-user mailing list
> [EMAIL PROTECTED]
> https://list
__________
> Lcms-user mailing list
> [EMAIL PROTECTED]
> https://lists.sourceforge.net/lists/listinfo/lcms-user
>
Mit freundlichen Grüßen
Kai-Uwe Behrmann
+ Bildprogrammierung / Panoramen
?
kind regards
Kai-Uwe Behrmann
+ imaging developer / panoramas
+ color management
+ email :[EMAIL PROTECTED]
---
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To use lcms as an selectable CMM would be nice, and is requested by
other as well on the german ECI list.
kind regards
Kai-Uwe Behrmann
Am 18.08.04, 16:12 -0600 schrieb Nathan Wade:
> How has LittleCMS been used on Mac OS X Panther? I'd like to use PHP5
> on Apache2 because I alr
result?
regards
Kai-Uwe Behrmann
+ imaging development / panoramas
+ color management
+ email :[EMAIL PROTECTED]
---
SF.Net email is sponsored by
Marti,
I've obtained cgats measurement data with spectral nmxxx (Nanometer)
content in BEGIN_DATA_FORMAT / END_DATA_FORMAT scope. Can You please make
arbitrary DATA_FORMAT identifiers visible in lcms? It would help me with
this content.
thanks
Kai-Uwe Beh
Hi,
does someone know more about the vcgt tag. The gamma tables are easy to
understand. But there are some more information inside, which I dont know
how to interprete.
regards
Kai-Uwe
Am 01.09.04, 16:08 +0200 schrieb Stefan Doehla:
> Hi list,
>
> I've created a tool which will calibrate your
p 8.1 today.
> http://ads.osdn.com/?ad_idP47&alloc_id808&opÌk
> ___
> Lcms-user mailing list
> [EMAIL PROTECTED]
> https://lists.sourceforge.net/lists/listinfo/lcms-user
>
>
Mit freundlichen Grü
th gimp-print and should
be installed if You dont switch it off. Threre You have the driver in the
application, no postsript is needed.
> I have used the lcms utilities to embed profiles and then convert to
> the printer profile before printing. This works but is very clumsy
> and time
Hi,
while brightening HDRs I see often the coloured halos arround the sun,
clouds and other bright regions. I understand that an simple clipping of
one channel befor the maximum of all other channels is reached causes such
hue shifts. Only I thought lcms is able to do an hue preserving clip.
What
would be a hot desired feature for CinePaint and any other
profile handling HDR application.
regards
Kai-Uwe Behrmann
+ imaging development / panoramas
+ color management
+
etimes like to switch the color space of the HDR image's
native representation in CinePaint without beeing afraid to get
lost of > 1.0 values ;)
regards
Kai-Uwe Behrmann
+ imaging development / panoramas
+ co
d the darkest of
> these shots (1:10? 1:100? 1:1000? 1:1? ...)?
... measured 1:8 - 1:120 . For stitching it depends how many
images are used as input.
regards
Kai-Uwe Behrmann
+ imaging development / panoramas
ke any other color space, beside the curious value
range of 0.0 -> 100.0 for L and -127.0 -> 127.0 for a and b.
regards
Kai-Uwe Behrmann
+ imaging development / panoramas
+ color management
Am 17.09.04, 02:26 +0200 schrieb Gerhard Fuernkranz:
> Kai-Uwe Behrmann schrieb:
>
> > agree. Only an example: the SGILOGLUV encoding in the TIFF spec is XYZ. I
> > simply like to handle these images as XYZ in floating point color space,
> > and see them through the co
YK, 1);
> cmsDeleteTransform(hTransform);
> cmsCloseProfile(hLabProfile);
> cmsCloseProfile(hOutProfile);
>
> Is it because Lab values are different for 8 bit format & double format ?
You can set
nLab[0] = fLab[0] * 255.0 / 100.0;
nLab[1] = fLab[1] + 127
ponsored by IBM.
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>
Mit freundliche
Am 19.09.04, 11:39 +0200 schrieb Gerhard Fuernkranz:
> Kai-Uwe Behrmann schrieb:
>
> > Marti,
> > While converting to and from XYZ synthetic gradients get lots of partitial
> > color casts, the german word is Farbabriss - color cut(?).
> >
> Kai-Uwe,
>
>
t; which flags did you pass to cmsCreateTransform() ?
> cmsFLAGS_NOTPRECALC?
> cmsFLAGS_HIGHRESPRECALC?
>
> Precalculated device links are not too accurate for a XYZ or linear RGB space.
> cmsFLAGS_NOTPRECALC will give the best result, but is slower.
>
> See atachment.
>
Scribus,
GraphicsMagic and the others.
I come soon in need to interoperate with different applications. managing
default profiles, paths, using starter scripts ...
kind regards
Kai-Uwe Behrmann
+ imaging development / panoramas
+ color
TRC tag of the input profile has
gamma = 1.0 .
regards
Kai-Uwe Behrmann
+ imaging development / panoramas
+ color management
+ email :[EMAIL PROTEC
Am 02.11.04, 13:46 - schrieb [EMAIL PROTECTED]:
>
>
> Kai-Uwe Behrmann <[EMAIL PROTECTED]> said:
>
> > Marti,
> >
> > You suggest to use tiff tags (whitepoint, primary chromaticies, ...) to
> > obtain sufficient data for on-the-fly profile creation.
&
an XYZ float triple and can
create easily an XYZ profile (just with the danger of quantisation).
regards
Kai-Uwe Behrmann
+ imaging development / panoramas
+ color management
+ email: [EMAIL PROTECTED]
Ross,
thanks for pointing out this behaviour. I will change this in my code.
This message may be helpfull to the lcms list too. Therefore I crosspost.
As about libtiff fax coding I must pass. I am coming from the float side,
working on HDR imagery.
kind regards
Kai-Uwe Behrmann
Hi,
lcms includes the above mentioned files for the iccjpeg utility. I like to
give credits to the author(s) while using it. Who is the original author
and did You, Marti, bring modifications in, so I should put Your name
somewhere too.
regards
Kai-Uwe Behrmann
Am 14.12.04, 09:49 +0100 schrieb Boudewijn Rempt:
> I've been experimenting, and I definitely need to cache at least some
> transforms. It turns out to be prohibitively slow to recreate the transform
> to the monitor profile for every display action, for instance.
Can You describe the display act
knowledge
is mostly helpful doing it right from the beginning.
kind regards
Kai-Uwe Behrmann
+ imaging development / panoramas
+ color management
+ email: [EMAIL PROTECTED]
+ CMS
using the
same memory across applications and save space. Is taking the profile id's
of both involved profiles plus creation options sufficent?
regards
Kai-Uwe Behrmann
+ imaging development / panoramas
+ color
asked about the specific transform
options including the belonging profiles. The application should
not care about memory stuff at all. Creation , invalidation and so one can
be better handled by an single library.
regards
Kai-Uwe Behrmann
+ imaging development
004, Kai-Uwe Behrmann wrote:
>
> > The offsets can easily been exchanged through Oyranos, as well as the
> > othe parameters influencing the transform. As an option the chache can
> > been removed after switching the computer off.
>
> It is important to note that expec
Kai-Uwe Behrmann
+ imaging development / panoramas
+ color management
+ email: [EMAIL PROTECTED]
+ CMS proposal
Am 14.12.04, 10:29 +0100 schrieb Boudewijn Rempt:
>
to
come in colour heaven ;)
> --
> Boudewijn Rempt | "Geef mij maar zuurtjes."
> http://www.valdyas.org/fading/index.cgi
>
Mit freundlichen Grüßen
Kai-Uwe Behrmann
+ Bildprogrammierung / Panoramen
+ Farbmana
ot;
> http://www.valdyas.org/fading/index.cgi
>
Mit freundlichen Grüßen
Kai-Uwe Behrmann
+ Bildprogrammierung / Panoramen
+ Farbmanagement
+ email: [EMAIL PROTECTED]
--
They use argyll for vrml ICC visualisations. Argyll is open source:
<http://www.argyllcms.com/>
regards
Kai-Uwe Behrmann
+ development for color management
+ imaging / panoramas
+ email:
will put such an type in
the global namespace too.
I know about the #define workaround You suggested. As it seems an
repeated request I like to confirm.
kind regards
Kai-Uwe Behrmann
+ development for color management
+ imaging
ove, add a LCMS_*
> prefix on all those types and label the new code as 2.0? Or just keep
> the 1.* convention until the smart CMM and gamut mapping features
> were available? Or just keep actual #defines untouched?
>
> Regards,
> Marti Maria
> The little cms project
&g
managed workflow under linux at an booth.
(in german)<http://chemnitzer.linux-tage.de/2005/live/detail.html?idx=161>
Maybe You are not living that far away. The Linux-Bus will bring people
from Berlin over Dresden to Chemnitz.
For more reading about linux and colour management follow the li
r long lines
I do in my examin tool like you describe. The results are ok.
dE is much better since I use cmsFLAGS_NOTPRECALC ;)
regards
Kai-Uwe Behrmann
+ development for color management
+ imaging / panoramas
hProfile));
printf("5 %s||",cmsTakeModel(hProfile));
}
output:
icSigProfileDescriptionTag:
1 ||2 ||3
[EMAIL PROTECTED]
WhitePoint : D65 (daylight)
||4 ||5 ||
The profile is attached for testing.
thanks
Kai-Uwe Behrmann
+ development for colo
Mike,
an null "3D grid" is not defined. It is legal by an CMM to reject because
of this state. The null "3D grid" profiles of lcms are for internal usage
only. Better not to export or embed them.
regards
Kai-Uwe Behrmann
+ development
found in the tifficc command line util,
which is provided with the lcms library. You can look at the sources.
regards
Kai-Uwe Behrmann
+ development for color management
+ imaging / panoramas
+ email
rrect the
(scanner/camera) image.
> Where should we actually do embeddeding of Profiles into such files ???
> Kindly clear my doubts.
Look at the lcms file tools for examples.
> Thanks and regards,
> Karthik bala guru
regards
Kai-Uwe Behrmann
+
;
The ICC specification is available on www.color.org .
regards
Kai-Uwe Behrmann
+ development for color management
+ imaging / panoramas
+ email: [EMAIL PROTECTED]
, even if the information is available.
I put a small comparision together:
<http://www.behrmann.name/index.php?option=com_content&task=view&id=35&Itemid=73>
regards
Kai-Uwe Behrmann
+ development for color management
Hi,
Additionally attched a view at the *b channel of the generated CLUT.
Hue and Saturation where changed. Maybe this explains the funny results?
Brightness and Contrast works more explainable to me.
regards
Kai-Uwe Behrmann
+ development for color management
FYI,
the
input matrix->abstract->monitor
approach sugested by Marti was tested. And the former posted site updated
accordingly.
<http://www.behrmann.name/index.php?option=com_content&task=view&id=35&Itemid=73>
As Graeme pointed out, there can be done much more.
ossibly other effects) would allow a downstream rendering
> into a specific device space to be guided as to what artistic result
> to aim for.
That would be a fine goal. Tonemapping comes in the game anyway and is
currently not yet considered with the ICC spec.
As CS2 is not the o
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