[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Re: PSVI formalization


Re:  PSVI formalization
[Alaric Snell]

> On Friday 10 May 2002 13:53, Thomas B. Passin wrote:
>
> > True (see SOAP+attachmemts). XML is a good candidate for sending
> > metadata about binary data.
> >
> > As in MPEG-7, if I understand things right.
>
> But why does any data need to be 'binary'? XML is an interchange format,
but
> it falls apart for certain types of information such as images... large
> arrays and so on. Other interchange formats don't. You can encode images
in
> PER quite happily, it's just a "SEQUENCE OF SEQUENCE OF SEQUENCE { red
> INTEGER, green INTEGER, blue INTEGER }" from memory (might want to
constrain
> those R/G/B integers into a sensible range to make them one or two bytes
> each).
>
> Those giant arrays can fit seamlessly in with the "SEQUENCE OF Paragraph"
> describing the image to humans and the "ImageInformation ::= SEQUENCE {
name
> UTF8String, width INTEGER, depth INTEGER }" and be processed with the same
> tools. You can pull out the colour of the top left pixel of the image with
> what passes for XPath in ASN.1-land.
>

I don't know much about MPEG-7, but my impression is that the metadata they
want to deal with is much more ambitious than describing the number of lines
and frames.  I think they want to describe more abstract characteristics of
scenes, and generally to be able to do SMIL-like things.  These properties
don't seem to me to properly belong in with the image data.  If this view is
roughly right, it makes a lot of sense to me to have the metadata separate,
just like it makes sense for card catalogs to be separate from books.

Cheers,

Tom P


PURCHASE STYLUS STUDIO ONLINE TODAY!

Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
Email
First Name
Last Name
Company
Subscribe in XML format
RSS 2.0
Atom 0.3
 

Stylus Studio has published XML-DEV in RSS and ATOM formats, enabling users to easily subcribe to the list from their preferred news reader application.


Stylus Studio Sponsored Links are added links designed to provide related and additional information to the visitors of this website. they were not included by the author in the initial post. To view the content without the Sponsor Links please click here.

Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.