Digital Library Implementation, Bitonal Image Content Model

Digital Library Implementation Home > Content Models

Input Master

400 ppi TIFF 4-bit black-and-white page images

Datastreams

Static 4-bit GIF preview, 120x120 pixels constrained

Static 4-bit GIF screen, 650-850 pixel width range as appropriate to achieve readability on screen

Static CCITT group IV compressed 4-bit TIFF max, resized dynamically through tif2gif

Phase 2 content for this model: Thwaites vol. 1-7, selections from 2003 Q3, 2003 Q4, 2004 Q1

uvaBitonal Image Content Model

uvaDefault

getPreview – returns the thumbnail resolution of the image.

getLabel

getDescription

getFullView(pid)

getDefaultContent

uvaMeta

getDescMeta

getAdminMeta

getDC

viewDescMeta(style)

viewAdminMeta(style)

viewDC(style)

uvaImage

getPreview – returns the thumbnail resolution of the image.

getScreen - returns the screen-sized resolution of the image.

getMax - dynamically returns a larger image using tif2gif.

getImageViewer - returns a larger image within the ImageViewer Applet.

uvaDownload Disseminator / uvaImageDownload Mechanism

getDownload – initiates a download of the screen datastream through the browser.

uvaOKI

getAssetDefs (childPid, parentPid)

Other

getDeliveryMaster - returns the TIFF master or a page describing where the master is located. For Phase 2, returns a statement describing the offline location of the master. The non-Fedora version does NOT exist in Phase I; Fedora-ized version will require writing a new script to handle this behavior. Meant to return the TIFF master or a html page describing where the master is located. Still to be implemented?

Recommendation: The getDeliveryMaster behavior will point to an element in the administrative metadata where the offline location of the Delivery Master is located, once that element is in use.

February 18, 2004; revised April 27, May 19, July 23, August 27, and September 17, 2004