Re: [Pytables-users] save image in an hdf5 file

[Francesc A. <fa...@ca...>]

Hi Philippe,

A Dimecres 12 Octubre 2005 15:13, phi...@ho... va escriure:
> The Hdf5 library is able to store image (file with .png, .jpg extension
> i guess).

Well, HDF5 has a high level API for graphics:

http://hdf.ncsa.uiuc.edu/HDF5/hdf5_hl/doc/RM_hdf5im.html

But this is not meant for dealing with .png or .jpg formats, but
rather with raw RGB image formats. In any case, this API is not
supported yet on PyTables.

> Is there some routines in pytables to do this easily?

If you want to use PyTables to save images right now you have a couple
of possibilities:

1.- If you want to save pure PNG or JPG or whatever format natively,
use the FileNode module:

http://pytables.sourceforge.net/html-doc/usersguide5.html

Of course, your application will have to provide the machinery to
decode this afterwards.

2.- If you want to use native RGB codifications, use an *Array
container with several dimensions (one per color channel) in order to
keep it.

HTH,

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