The DigitalHIWAY System includes three modules: DigitalHIWAY Incremental Index and Editor (IIE), DigitalHIWAY ImageServer (DH ImageServer), and DigitalHIWAY Client (DH Client).
The IIE post-processes raw collected data-streams into a form suitable for delivery to the DigitalHIWAY Client (on the end-user's desktop) by the DigitalHIWAY ImageServer. During this post-processing, image and non-image data-streams are associated and checked for completeness. Multiple photolog-filming sessions can be edited into a seamless ImageServer data set (so that long routes can be photologged in separate segments). Traditional department linear-referencing locations are tied to the images that show them (by visually correlating with the image from the previous year):
The final step in IIE post-processing for a route/direction consists of the creation of a Concatenated JPEG Library file (".CJL") and an "upgrade file" (containing a new route index for use by the end-user). The CJL file serves as a single container for all images for a route/direction.
Below:Incremental Indexing and Editing "Checkpoint" Validation Screen
DH ImageServer sends CJL route images to requesting users via the DigitalHIWAY System protocol layered on top of standard TCP/IP protocol. The software runs as a service on any Microsoft Server-based PC and can be administered locally or remotely with the DigitalHIWAY ImageServer Controller. DH ImageServer distributes the index-file-updates created by IIE to client workstations. Client software upgrades and repairs are also done this way, maintaining uniformity and compatibility for all end-users.
DH ImageServer also distributes a "Data Services News" feature that lets DSS communicate with users regarding DigitalHIWAY and photolog operations.
Below:DigitalHIWAY Server "News" Screen
DH Client resides on individual PC workstations throughout ConnDOT and other State Agencies. Installation consists of copying a single file to an empty subdirectory on the user's computer, and then running it once to perform setup chores. After completing the installation and starting the software, the general user interface consists, first, of a simple list of all state-maintained highways ordered by route and direction that the client is prompted to select from. After the client selects a route the software loads the first CJL image representing the start of that route and direction along with a forward and reverse motion control window, HDTV image window and an interactive link to traditional linear referencing locations along each roadway.
Below:DigitalHIWAY Client Session Screen