XMP Schema for Rail Photos - v1.0

Home | Signals | Flower Power | Bumblebees | Bands | CD collection | Music links | Malvern | Photos | Musings | Adrianisms | Library | Spiralize | Karnataka | Irony | Strawbs | Ashtar | Drugstore | Headhunters | La Honda | 'Campaign' | Facebook | YouTube | MySpace | Mail me

last updated 29 March 2008

Flying cross logo

Introduction

This page describes a custom XMP metadata schema I have developed and use for cataloguing my railway photos, and contains the technical information you will require in order to view or use this metadata and integrate it into desktop searching tools. XMP is Adobe's eXtensible Metadata Platform which provides a framework for embedded document metadata and is used by Photoshop and other Adobe applications for management of metadata embedded into image files such as JPEGs and TIFFs. XMP is an XML format based on the public Resource Description Framework (RDF) standard.

I now use this technology for incorporating metadata into my photographs - all signal photos added to this site since 13/8/06 include XMP metadata using this schema in addition to the standard ones.

This page contains the following information:


Schema namespace URI

http://www.roscalen.com/RailwayPhotos/1.0/

Preferred schema namespace prefix

RailPhoto

GUID

I have allocated this schema a GUID of {32D05854-40C7-44DB-B41E-1443376DE391} for use with IFilterShop's XMP IFilter desktop file search plugin v2.0.


Properties

Property Value Type Category Description
signalboxes bag Text External An unordered array listing the signalbox(es) appearing, or controlling the signals appearing, in the photo.
line Text External The line on which the photo was taken.
companies bag Text External An unordered array listing the companies who owned the line(s) shown in the photo, eg Great Western Railway, London & North Western Railway, etc. Multiple entries should be made for joint lines.
category closed Choice External Category of photo (see below).
importance closed Choice External Importance of photo (see below).
grade Text External A quality grading assigned to the photo. I use an A+ to E- system, but it is not obligatory to follow that convention.
sequence Integer External The sequence number of the photo within the full collection. I have assigned sequence numbers to my slide collection, but no longer do so for newly taken digital photos.
item Integer External The sequence number of the photo within its category. I have assigned category sequence numbers to my slide collection, but no longer do so for newly taken digital photos.
substitution Boolean External If set to true this property indicates that the photo in question is a later substitute for an earlier one of the same subject which was of poorer quality.
epoch Text External An unformatted string into which the approximate date when the photo was taken, eg "May 73", can be entered in cases where the exact date is not known. Labelled as When taken: on the custom Photoshop metadata panel provided below. Where I do have the exact date available, I store this in the IPTC Core/Photoshop DateCreated property and leave this property unset.
film Integer External The sequence number of the film on which the photo was taken. I assigned each slide film I used a sequence number, but this property is clearly not relevant to digital photos.

Category code vocabulary

Value Description
1 - 4DD train The class-4DD double-decker train that used to run on the BR Southern Region
2 - Birmingham New St Signal The unique colour-light signals that used to be at Birmingham New Street.
3 - Signalling Signalling generally.
4 - Cadburys Cadbury's private locos and rolling stock used at their former sidings at Bournville.
5 - General Trains Other, non-signalling-related rail photos.
6 - Train Interiors Photos of train interiors.
7 - Model Railways Photos of model railways.
8 - Trams Photos of trams and tramways.
  This property may also be left unset.

Importance level vocabulary

Value Description
1 - High Of wide interest.
2 - Normal Important for reference purposes.
3 - Low Of marginal importance.
  This property may also be left unset.

Notes

  1. This schema is designed to be used in conjunction with the standard Photoshop, Dublin Core, and IPTC Core schemas (it is also complementary to EXIF). The custom panel also includes fields linked to the following standard properties from those schemas:
  2. The category code vocabulary may be extended in future versions. The current list is a legacy classification based on the system I used for cataloguing my slide collection. Category codes are numbered because the numbers were what I annotated my slide mounts with.

Resources


logo Home | Signals | Flower Power | Bumblebees | Bands | CD collection | Music links | Malvern | Photos | Musings | Adrianisms | Library | Spiralize | Karnataka | Irony | Strawbs | Ashtar | Drugstore | Headhunters | La Honda | 'Campaign' | Facebook | YouTube | MySpace | Mail me