Georeferencing data from PDF

• What kind of application are you developing?

This is our mature (15 years) main SAAS application with UI in desktop and web. We use devextreme and winforms controls in those, and the pdfDocumentProcessor. www.civilpro.com. We service the engineering QA sector in the construction industry.

• Why is it necessary to extract the georeferenced location data and how are you going to use this data in your usage scenario?

We are extending our application to incorporate geospatial functions that provide annotations of work locations (points, linestrings and polygons). We have developed a system around the PDFViewer and PDFDocumentProcessor where our users manually mark registration points on a PDF and add geospatial references - we then scale the coordinates off features so we can get the coordinates of any PDF location in the provided reference system. The shapes are store in a spatial schema in an MS database and are replotted on PDFs etc. Much of our source information (the engineering PDF documentation) comes with georeferencing embedded in the PDF (or can do if required). If we can read this we can reduce the administrative task of providing registration on the drawings - which is currently a manual process of clicking in 3 locations

• Do you need a similar feature in the visual PDF Viewer control?

It would be useful, but given the extent of the work we have already done, we have a mechanism already for determining the position on the drawing.

• In a nutshell, we are trying to provide our users an alternative to manually setting the Georeferencing system in our application where that data already exists in the PDF they are using.

Hello Dennis,

Thank you for sharing the detailed feedback, we appreciate it. I forwarded it to the team.

Please let me know if I can be of more help.