Data

From Colourphon

Data Elements

We need to descibe the things we are looking at in terms that make sense and are relevent A work in progress...

( O = optional | R = repeatable | NR = No Repeat | B = broad term i.e. term has other properties of it's own ) Actually I guess most of this can be optional... it just means we need more data

• image
  • has title (R B)
  • has uri (NR)
  • has url (NR)
  • has size (pixel width by height)
  • has colour (R B)
  • has creator (R B) - creator identifier
  • has description (R B) - free text
  • has thumbnail (R) - uri to image represenatations
  • has orientation (NR) - portrait|landscape
  •  ? has tag (O R) - user tagging?
  • has standard_identifier (O R) - e,g, urn:isbn:9781234567890
  • is thumbnail
  • has divisions
  • has standard_identifier

• title
  • has language

• colour (of a pixel) or in our context, the mode of a group of pixels.
  • • <img:Colour rdf:about="http://colourphon.co.uk/colours/aabbccddeeffgghhiijjkkll">
  • has title (R)
    • <dc:title xml:lang="en-gb">Blue</dc:title>
  • has RGB
    • <img:RGB>(0,0,255)</img:RGB>
    • has red (NR) think this level of normalisation may be unnecessary?
    • has green (NR) think this level of normalisation may be unnecessary?
    • has blue (NR) think this level of normalisation may be unnecessary?
  • has frequency (expressed as a percentage of whole image)
    • <img:frequency>67</img:frequency>
  • has count (expressed as a count of occurrences in whole image)
    • <img:count>2748</img:count>
  • has brightness (NR) Arithmetic mean of RGB values ?
    • <img:brightness>85</img:brightness>
  • has saturation (NR ?
  • has hue (NR) ?
  • has creator (<proclaims>I name this colour 'sky blue pink'</proclaims>)

Which to represent a colour found in an image, gives us something like...

<img:Colour rdf:about="http://colourphon.co.uk/colours/aabbccddeeffgghhiijjkkll" xmlns:img="http://colourphon.co.uk/img/0.1/">
  <dc:title xml:lang="en-GB">Blue</dc:title>
  <dc:title xml:lang="fr">Bleu</dc:title>
  <img:RGB>0,0,255</img:RGB>
  <img:brightness>85</img:brightness>
  <img:count>2748</img:count>
  <img:frequency>67</img:frequency>
  <foaf:Person xmlns:foaf="http://xmlns.com/foaf/0.1/">
    <foaf:name>Tim Hodson</foaf:name>
    <foaf:mbox_sha1sum>2134b1234b124b124b14b214b214b214b124</foaf:mbox_sha1sum>
    <foaf:homepage rdf:resource="http://timhodson.com/" />
  </foaf:Person>
</img:Colour>

• creator
  • has foaf characteristics
    • see foaf project
    • spec: [1]

So put it all together and we get:

<img:image rdf:about="http://image/URI">
  <dc:title xml:lang="en-GB">Alt text for my image...</dc:title>
  <???standardidentifier>urn:isbn:9781234567890</???standardidentifier>
  <img:Colour rdf:about="http://colourphon.co.uk/colours/aabbccddeeffgghhiijjkkll" xmlns:img="http://colourphon.co.uk/img/0.1/">
    <dc:title xml:lang="en-GB">Blue</dc:title>
    <dc:title xml:lang="fr">Bleu</dc:title>
    <img:RGB>0,0,255</img:RGB>
    <img:brightness>85</img:brightness>
    <img:count>2748</img:count>
    <img:frequency>67</img:frequency>
    <dc:creator:>
      <foaf:Person xmlns:foaf="http://xmlns.com/foaf/0.1/">
        <foaf:name>Tim Hodson</foaf:name>
        <foaf:mbox_sha1sum>2134b1234b124b124b14b214b214b214b124</foaf:mbox_sha1sum>
        <foaf:homepage rdf:resource="http://timhodson.com/" />
      </foaf:Person>
    </dc:creator>
  </img:Colour>
</img:image>

Name spaces and elements

Describe an image:

Created by	dc:creator
Submitted by	dc:contributor	http://purl.org/dc/terms/contributor
Description	dc:description
Total pixels	img:totalpixels
Sampled pixels	img:sampledpixels
IMG Source URL	img:srcurl
IMG Thumbnail URL	img:thumburl

links

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