Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  <20122013  2014  2015  2016  2017  2018  2019  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  <20122013  2014  2015  2016  2017  2018  2019 
<== Date ==> <== Thread ==>

Subject: Re: hdf5 (h5py) anyone?
From: Emmanuel Mayssat <emayssat@yahoo.com>
To: Mark Rivers <rivers@cars.uchicago.edu>, epics <tech-talk@aps.anl.gov>
Date: Thu, 22 Mar 2012 10:27:42 -0700 (PDT)
Just out of curiosity, why would you store images in hdf5 files?
How do you store them? 1 image = 1 huge table with pixel intensity?

It must be because it is easier to get statistics, extract region of interest, work with several images (datasets), etc.
Is that correct?

For a project, I worked on some time ago (but dropped due to lack of funding), we were looking at CT-scan type of applications with 8 exposures per rotation angle, 180 deg rotation with 0.5 deg step, i.e. descent size data set. I am wondering if hdf5 could have helped in the reconstruction. Then and still today, we were/are using mar/crayonix software.

MAR doesn't store image in hdf5 format, but can the areaDetector package convert those files on the fly?

--
E




From: Mark Rivers <rivers@cars.uchicago.edu>
To: 'Emmanuel Mayssat' <emayssat@yahoo.com>; epics <tech-talk@aps.anl.gov>
Sent: Thursday, March 22, 2012 7:32 AM
Subject: RE: hdf5 (h5py) anyone?

The EPICS areaDetector package currently has 2 file writers that produce HDF5 files:
 
NDFileNexus creates NeXus compliant HDF5 files using the NeXus API.  It was written by John Hammonds from the APS.
NDFileHDF5 creates HDF5 files using the native HDF5 API.  It was written by Ulrik Pedersen from Diamond Light Source
 
Mark
 
 


Replies:
Re: hdf5 (h5py) anyone? Pete R. Jemian
RE: hdf5 (h5py) anyone? Mark Rivers
References:
hdf5 (h5py) anyone? Emmanuel Mayssat
RE: hdf5 (h5py) anyone? Mark Rivers

Navigate by Date:
Prev: Re: hdf5 (h5py) anyone? Emmanuel Mayssat
Next: RE: hdf5 (h5py) anyone? Malitsky, Nikolay D
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  <20122013  2014  2015  2016  2017  2018  2019 
Navigate by Thread:
Prev: RE: hdf5 (h5py) anyone? Mark Rivers
Next: Re: hdf5 (h5py) anyone? Pete R. Jemian
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  <20122013  2014  2015  2016  2017  2018  2019 
ANJ, 18 Nov 2013 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·