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Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB
From: |
Bob Friesenhahn |
Subject: |
Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB |
Date: |
Mon, 23 Feb 2015 11:08:41 -0600 (CST) |
User-agent: |
Alpine 2.01 (GSO 1266 2009-07-14) |
On Mon, 23 Feb 2015, Elle Stone wrote:
Floating point tiff doesn't seem to be as well supported as OpenEXR in the
various free/libre editing applications. For example at present Krita 2.9
can't read or write a floating point tiff but reads and writes OpenEXR images
with no problems.
Most "free/libre editing applications" do not natively use floating
point to store internal raster data and they display their data using
interfaces which only support 8 integer bits per sample. OpenEXR is
useful to store floating point data. The whole path may not be loss
free unless it is round-tripped in the same format.
Apparently the tiff specs encompass many different ways of writing an image.
Yes.
From a user perspective, if tiff (or PPM) doesn't work for sharing high bit
depth RGB data between ICC profile color managed editing applications, maybe
the applications can read and write OpenEXR.
Kai-Uwe makes a good point that TIFF (e.g. 16-bits/sample) and ICC go
hand in hand. ICC is not commonly used with OpenEXR and it does not
support HDR. However, floating point TIFF and ICC do not normally go
hand in hand.
Bob
--
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB, Piotr Stanczyk, 2015/02/20
Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB, Kai-Uwe Behrmann, 2015/02/23
- Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB, Elle Stone, 2015/02/23
- Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB,
Bob Friesenhahn <=
- Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB, Elle Stone, 2015/02/23
- Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB, Kai-Uwe Behrmann, 2015/02/23
- Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB, Elle Stone, 2015/02/27
- Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB, Kai-Uwe Behrmann, 2015/02/27
- Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB, Chris Cox, 2015/02/27
- Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB, Elle Stone, 2015/02/27
- Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB, Larry Gritz, 2015/02/27
- Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB, Chris Cox, 2015/02/27
- Re: [Openexr-devel] OpenEXR files with nonlinearly encoded RGB, Bob Friesenhahn, 2015/02/28
[Openexr-devel] OpenEXR files with nonlinearly encoded RGB, Deke Kincaid, 2015/02/28