Hi Phil,
On Sep 20, 2012, at 1:13 PM, Philip Miller wrote:
> I would like to use hdf5 as a general file format for my work. I do a lot of
> computer vision work and image storage is quite important. I need to be able
> to store images in a variety of formats. HDF5 seems to be a good start. One
> can store images that are true color and palette lookup and can even use one
> of the built-in lossless compression filters of szip or gzip. My question or
> thought for discussion is: How would one go about extending hdf5 (and if
> necessary hdf view) to also support other image formats (i.e., jpeg,
> jpeg-2000, tiff, etc.), both lossy and lossless?
>
> I know the FAQ has an entry about using the opaque datatype to store a binary
> object in an hdf5 file. I am looking for a more standardized or general
> purpose approach. I believe something like a “jpeg” filter is what I would
> like. If a generic encode/decode filter is not feasible (or even a good
> idea), what about a decode only filter? For example, if reasonable, I would
> be willing to write the code to store an image as a custom jpeg data type but
> would like to have a general purpose jpeg “decode filter” that a general
> purpose tool, like hdfview, could use to display the dataset as an image.
>
> Or am I trying to do too much with HDF5 and should not try to use it as a
> general container for compressed imagery (and eventually video)?
>
> I am still getting started with HDF and I appreciate any comments or
> suggestions.
I think this is an appropriate use of HDF5 and should probably be
tackled at a couple of levels, including possible extensions to the Image API,
along with new compression filters like the JPEG ones you suggest.
Quincey
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