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W.E.C. Engineers, Inc. continues to develop the Geographic Information System (GIS) by adding both attribute and spatial data. The Right-of-Way Aerial Mosaic project involved scanning large mylar copies of aerial photographs which included the legal right-of-way, centerline, station points and other engineering related information. Each scanned image was enhanced and clipped using image processing software before being converted to an ARC/INFO grid file. The grid file was then warped and geo-referenced to the existing GIS files.

The geo-referenced photographs may now be viewed as a background to the existing digital map layers. W.E.C. developed a customized information management system to organize the photographs based on their characteristics and location. Turnpike officials will now be able to locate a particular photograph based on a mile post location, a range of station points or a specified township, borough or county.

W.E.C. has also completed a project that involved scanning color photographs of turnpike signs. The images are linked to their mile post location along the turnpike. A custom application allows users to locate, update and manage all signs along the turnpike. The database from the turnpike's sign log was integrated with the GIS application using Visual Basic programming. Turnpike officials now have custom query and edit capabilities in an easy-to-use interface.

Project Highlights:

Image processing and geo-referencing for over 450 mylar aerial photographs

Custom management system to organize images and aid in data retrieval

Image processing for sign photographs