Re: [Openexr-devel] Help: How to Read in an OpenEXR Image

[Derek Gerstmann]

Kevin Erickson wrote:

> I was wondering if anyone has an example of how to read in an OpenEXR 
> image.  I am a student and new to this image format, I have read the 
> documentation on this but the documentation examples do not address what 
> headers need to be included to accomplish this.

The examples on the OpenEXR webpage do an excellent job of explaining
this.

Check out the following:
http://www.openexr.org/api.html

...

As far as declarations in c++, you'll need the following:

#include <ImfInputFile.h>
#include <ImfOutputFile.h>
#include <ImfChannelList.h>
#include <ImfFrameBuffer.h>
#include <ImfStringAttribute.h>
#include <half.h> // optional if you're not using the half datatype

using namespace Imf;
using namespace Imath;

...

If that still doesn't get you going, you can check out the source
for Spawner, my evolutionary computer graphics framework which
uses OpenEXR.

Grab it here:
http://home.myuw.net/dgerstma/content/graphics/programs/spawner.shtml

The files you'll be interested in are:
./source/ExrImage.h
./source/ExrImage.cpp

...

Cheers!

-[dg]
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Derek Gerstmann                                     address@hidden
MSc Computer Animation                  NCCA - Bournemouth University
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