Re: [OSM-talk] How to photo fold-out maps
Lars Aronsson wrote: I have an 1909 out-of-copyright book from the library. It has a fold-out map that is bound with the book, so I can't take it out. How do I hold the map flat to get a good photo? My current photos are not my proudest moment: http://commons.wikimedia.org/wiki/Image:LA2-stridfin-overviewmap-left.jpg http://commons.wikimedia.org/wiki/Image:LA2-stridfin-overviewmap-right.jpg I have a lot of material like this, and even when it's removed from the book and flattened it still does not scan properly. For this map http://home.lsces.co.uk/lsces/wiki/index.php?page=British+Isles I ended up scanning each section and then tidying things up with paintshoppro. ( I still need to load the larger versions that go with each page of that - 4Gb! ) I think the only way to get truly flat images is via a rotary scanner which is obviously out of the question with a book :( -- Lester Caine - G8HFL - Contact - http://home.lsces.co.uk/lsces/wiki/?page=contact L.S.Caine Electronic Services - http://home.lsces.co.uk MEDW - http://home.lsces.co.uk/ModelEngineersDigitalWorkshop/ Firebird - http://www.firebirdsql.org/index.php ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
Re: [OSM-talk] How to photo fold-out maps
Lester Caine wrote: For this map http://home.lsces.co.uk/lsces/wiki/index.php?page=British+Isles I ended up scanning each section and then tidying things up with paintshoppro. Yes, I'm taking that approach with the NPE scans at the moment - scan as is, then manually straighten. I've written a bit of Perl to do this, using the fabulous Imager library: http://search.cpan.org/src/TONYC/Imager-0.62/samples/quad_to_square.pl but I believe you can also do it with gdal should you so desire. cheers Richard ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
Re: [OSM-talk] How to photo fold-out maps
On Jan 11, 2008 7:33 AM, Lars Aronsson [EMAIL PROTECTED] wrote: I have an 1909 out-of-copyright book from the library. It has a fold-out map that is bound with the book, so I can't take it out. How do I hold the map flat to get a good photo? Another thing you might want to try is getting further away and using a longer lens. 50mm is quite short and the barrel distortion around the edge is noticeable - try a longer lens (300mm) and take pictures of smaller areas if necessary. Is there a photocopier in the library that you can use? Cheers, Andy ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
