2009/2/11 Ævar Arnfjörð Bjarmason <[email protected]>: > On Wed, Feb 11, 2009 at 1:06 PM, Tim Waters (chippy) > <[email protected]> wrote: >> I'd like to announce the release of the latest Map Warper image >> rectifier application, designed with OSM in mind. >> http://warper.geothings.net/ > > Firstly thanks for working on this, it's a very useful application > which makes it very easy to use third-party bitmap maps to import into > OSM. > >> You may have seen or used the older application, this one has got a >> few more bells and whistles, including: >> * Search for maps. >> * Users & "MyMaps". (no need to sign up to use it) >> * Image cropping. >> * Control Point editing. >> * Calculation of RMS errors. >> * Export in different formats. >> * Activity feeds. >> >> More info: http://thinkwhere.wordpress.com/2009/02/10/new-map-warper/ >> >> Caveats: It will rescale large images (over 1500x1500), but it also >> makes things work much faster. It is ultra-beta and undergoing active >> development, so expect bugs and things not to work, but for most uses >> it should work fine. Let me know if you encounter any such things. >> If you have any existing WMS links from the older version, they will >> still work and I've also imported the existing maps, and control >> points. If you sign up and want to "own" a map you previously >> uploaded, let me know. >> >> Features planned include serving the rectified maps as tiles, adding >> tags, making maps private, making the KML export better, and >> incorporating GeoRSS feeds. Again, feel free to drop me a line if you >> have a good idea for a new feature, or if you'd like to hack on it. > > These new features are very useful, especially the ones to do with > user accounts, it's nice to have a list of your maps instead of just > adding them to one giant pool. > > I think the map rectifier is a bit less intuitive than in the previous > version. I used to be able to double click on either map which would > add a new rectification point and then do the same with the other map, > but now one has to switch between the Add point/Move point/Move map > tools to move around the map. This has the advantage of being able to > double click on the map in move mode without adding points (and > probably something else I'm missing). But switching between the > different modes took me bit longer using this method.
Yes, I'd agree with you there, the reasoning is that people tend to use double click to zoom in, but I think that double clicking should make it a bit easier. Will look into it. > Also, being able to download GeoTiff from the application is a very > useful feature, but does it also support GeoTiff uploads? That would > enable moving maps between installations and using this as a easy to > set up WMS for misc GeoTiff files. At the moment, I don't think it likes geotiff files that have already been rectified, but you could try with a small one... Anyhow, the approach I would take is to strip out any original geo tags from the image, and so you would have to add a few control points and warp it again. It's not really meant to be a WMS host for ready made GeoTiff files, but I may put a simple upload-a-tif-and-host-it service anyhow, as you are not the first person to ask for this. (JOSM import support for reading geotiffs would rock). > The biggest disadvantage of this tool is still being limited by the > size of maps you can upload. I have several ~6000x~5000 pixel maps I'd > like to have access to over WMS, each around 12 MB[1]. Is there any > reason for this limitation other than preventing the application from > taking over resources on your server? Or is it a limitation of some > library you're working with? Yes, this is Dreamhost, they have a script that will terminate processes using a lot of CPU or RAM, so I can add a couple of restrictions (file size and image dimensions). You may like to have a look at another deploy over at http://warper.freemap.in for larger files. We're going to be warping 800mb tifs soon... here, the main limitation is that you can expect http timeouts for very large uploads. Cheers! _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
