Download - Delivering Visual Resources
Delivering Visual Resources
An introduction
Internet, intranet, CD/DVD, hybrid Image preparation Metadata for search and retrieval System development Design Protecting images
Delivering Visual Resources: introduction
Internet, intranet, CD/DVD, hybrid Web delivery generally regarded as desirable
but this can be problematic for either technical reasons or because of rights
For an in-house solution (perhaps delivering for particular courses) an intranet solution might be preferred
For large images, CD or DVD might be chosen A hybrid solution can be a good strategy with CD/DVD and
web site
Delivering Visual Resources: introduction
Internet, intranet, CD/DVD, hybrid An example
The Lindisfarne Gospel at the British Library Available online
can be very slow because of ‘Turning the Pages’ technology
small images, not useful for research purposes Available on CD
much faster high quality images
Delivering Visual Resources: introduction
Image preparationcreating derivatives
size, format, compressionthese will depend on the delivery system chosenmuch larger images on CD
using proprietary solutionsZoomify, DjVu, etc
these can also be a way of protecting imagesExample: DIAMM (Digital Image Archive of Medieval Music)
Delivering Visual Resources: introduction
Metadata for search and retrievalmetadata will be discussed in detail tomorrow
Need to decide what users are likely to search onAnd what information they will need when they have accessed the resourceHow will they know that they have what they need?How much metadata? What kinds?
Delivering Visual Resources: introduction
System development: optionsUse a proprietary systemCustomize a systemCommission a system from suppliersBuild a system yourself
All have advantages and disadvantagesWhat skills and resources do you have available?How will you best maintain the system?
Delivering Visual Resources: introduction
Typical data flow and system overview
Design
Three key aspects of designunderlying data designunderlying architecture of the systemvisual design
All are criticalbut the data design is probably the most important
They should all work together
Delivering Visual Resources: Design
Protecting imagesWhy protect images
rights managementprotection against misuse
How?WatermarkingResolution – keep image less than 200 pixelsLock them into a system that doesn’t allow easy interference like Zoomify
Delivering Visual Resources: Protecting images
Digimarc and security
“Our Digimarc service and digital watermarking in general are not designed as a security tool or to stop the theft of images. We don't make any such claims or portray our service in that light. There is no 100% effective method of watermarking. With the right know-how and tools any technology can be beaten eventually. Digital watermarking, like any technology. has its strengths and weaknesses.
The ability for Digimarc to locate specific image content, filtering out specified content providing rights attribution for photographers and content owners, and searing a unique ID into the image that can be tied back to source meta data leaves Digimarc offering a service of great value to the right application base.”
Todd Burns, Sr. Acct Executive, Digimarc CorporationFrom email received 26th April 2004