Well, I was trying to watch video that has been inverted. If I simply invert it without doing anything special, the gamma is screwed up, so it is watchable, but not particularly good quality. I had thought that I could create an appropriate negative profile to compensate for the wrong gamma it could be improved. My monitor supports icm profiles, so it would be trivial to simply load the correct inverted profile. Not a common use of icm profiles, I know, but I was interested in trying it out of curiousity.
I am not using it for 35 mm negatives or anything like that - I would simply invert in Vuescan.
Anyway, thanks for replying.
-Michael
From: Mart� Maria <[EMAIL PROTECTED]>
To: "Michael Eckert" <[EMAIL PROTECTED]>,<[EMAIL PROTECTED]>
Subject: Re: [Lcms-user] Create an inverted (negative) sRGB monitor profile
Date: Mon, 24 Feb 2003 15:32:29 +0100
Hi.
Oh, well, negative profiles were never supported, indeed. I'm not surprised the profiler got crazy on that :-)
Anyway, is there any special reason to do that? lcms does already support negative values as an special encoding type. But since there are no devices like "negative monitors"...
If you are trying to use this profile for raw camera format, forgot it. There are such quantity of additional tweaks needed that I'm afraid a simple negative profile would simply not work.
Regards, Mart� Maria The little cms project http://www.littlecms.com [EMAIL PROTECTED]
----- Original Message ----- From: "Michael Eckert" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, February 23, 2003 4:47 AM Subject: [Lcms-user] Create an inverted (negative) sRGB monitor profile
>
> Is it possible to create an inverted (negative) sRGB monitor profile with
> qMonitorProfile?
>
> I tried to create a crude one by inverting the XYZ_Z, XYZ_Y, and XYZ_Z
> values within the sRGB.it8 file, but qMonitorProfile just bombed (in
> Windows98).
>
> Any suggestions?
>
> Thanks,
> Michael
>
>
>
>
>
>
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