I love WalkingPapers for OpenStreetMap editing. I used it a lot in my personal mapping expeditions and during mapping parties. In fact, I think it is one of the most innovative field data collection tool in OSM. For humanitarian mapping, WalkingPapers is an effective way to collect data without the need to use a GPS device since it integrates nicely with JOSM and Potlatch1.
It is very similar to WalkingPapers with a few more bells and whistles. While FieldPapers looks better than WalkingPapers, it lacks the integration to my OSM editing specifically with JOSM.
In trying to look for ways to solve this, I tried the following:
ImportImagePlugin in JOSM
FieldPaper scans can be downloaded as a GeoTiff image which can be loaded in any GIS software. There is plugin in JOSM that allows import of rectified image called ImportImagePlugin. Updating my JOSM and adding the ImportImagePlugin doesn’t work. There seems to be a problem downloading and compiling the geotools dependency.
So this one is a fail.
Custom imagery layer in JOSM
The next approach is to use a custom imagery layer in JOSM. FieldPapers provide a custom TMS for each paper scan. By loading Firebug, I can inspect the URL for each imagery tile.
For example the snapshot above shows a URL like this:
Using this URL as a template, I can now add a custom imagery in JOSM (The URL template is explained in detail in the Slippy map tilenames of the OSM Wiki.)
In JOSM, open the Imagery Preference and add a new imagery layer. In the Enter URL field, add the link below:
sl8gttnw refers to your FieldPaper scan/snapshot ID.
Close the Imagery Preferences and load the custom imagery from the Imagery menu. Woot!
This is not really an elegant solution but works for now. I hope JOSM plugin developers can find time to build a new plugin based on the old WalkingPapers plugin that uses the FieldPapers imagery.
I also tried loading the custom imagery layer in Potlatch2 but can’t get it to work for now.