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 preparation creating derivatives size, format, compression these will depend on the delivery system chosen much larger images on CD using proprietary solutions Zoomify, DjVu, etc these can also be a way of protecting images Example: DIAMM (Digital Image Archive of Medieval Music) Delivering Visual Resources: introduction

Metadata for search and retrieval metadata will be discussed in detail tomorrow Need to decide what users are likely to search on And what information they will need when they have accessed the resource How will they know that they have what they need? How much metadata? What kinds? Delivering Visual Resources: introduction

System development: options Use a proprietary system Customize a system Commission a system from suppliers Build a system yourself All have advantages and disadvantages What 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 design underlying data design underlying architecture of the system visual design All are critical but the data design is probably the most important They should all work together Delivering Visual Resources: Design

Protecting images Why protect images rights management protection against misuse How? Watermarking Resolution – keep image less than 200 pixels Lock them into a system that doesnt 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 Corporation From received 26 th April 2004