Re: DICOM curve with spectraview
Re: DICOM curve with spectraview
- Subject: Re: DICOM curve with spectraview
- From: Koch Karl <email@hidden>
- Date: Sat, 5 Apr 2008 10:35:27 +0200
Generally any curve is acceptable, becaus color managed applications
compensate for the calibration curve in the monitor profile.
If you want to do it absolutely right, you calibrate your monitor to
the exact tone curve of your RGB data. This ensures that the color
management system does not have to transform the tone values, which –
in an 8bpc system – would result in a (potentially visible) loss of
tone values.
So, if you mainly work with AdobeRGB files, calibrate to a gamma of
2.2, if you mainly work with sRGB diles, calibrate to the sRGB tone
curve (which is NOT gamma 2.2), if you work with eciRGB_v2 (or a mix
of the above mentioned) files calibrate to L*. IF and only IF you work
with DICOM (medical) files, calibrate to the DICOM curve.
Best regards,
Karl Koch
basICColor GmbH
Am 05.04.2008 um 04:26 schrieb David Remington:
So I take it the curve is not optimum for graphic arts display?
On Apr 4, 2008, at 3:03 PM, email@hidden
wrote:
Message: 6
Date: Fri, 4 Apr 2008 12:05:30 +0200
From: Koch Karl <email@hidden>
Subject: Re: DICOM curve with spectraview
To: "email@hidden Users Mailing List"
<email@hidden>
Cc: David Remington <email@hidden>
Message-ID: <email@hidden>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed;
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Ture,
I fully agree, medical stands today, where the grahpic arts were pre-
ICC (some time in the late 80s).
Nevertheless it´s their standard, constituted by international
standardization bodies.
These are the reasons, why basICColor made a separate medical product
for DICOM (and CIE) calibration (basICColor RAY) instead of confusing
users in the graphic arts with a calibration, nobody (except for
health professionals) will ever need.
Best regards,
Karl Koch
Am 04.04.2008 um 09:57 schrieb Ture Pålsson:
(I used to work in medical imaging, and while it was both fun and
interesting, my spontaneous advice to anyone encountering DICOM for
the first time is "turn and run!" :-) )
David Remington
Manager, Digital Imaging and Photography Services
Digital Imaging and Photography Services
D-40 Widener Library
Cambridge, MA 02138
p 617-496-9346
f 617-495-0403
w http://imaging.harvard.edu
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