Hi Roger, My goal is to be able to directly import NITF image to GE without using KML. You can see the advantage of this application - if it works. I'm glad that you have viewed in GE georeferenced imagery created or altered by gdal. Maybe you can point out what I did wrong.
It is good that you asked about GeoTIFF. So I used gdal_translate to convert the tif image to a GeoTIFF image. I tried to drag and drop the GeoTIFF image to GE but nothing happened. I did not see the GeoTIFF image in GE and I did not get any error message either. I can open the GeoTIFF image with OpenEV and I can read the lan/lon coordinates and they are correct. One thing is that it seems that OpenEV does not set North to Up. Its orientation aligns with the file coordinates - (0,0) is at the upper left corner. I then opened tif file in the same OpenEV and they match to each other. Again, I can import the tif image with its kml to GE but I can not import the GeoTIFF to GE (without using kml), it seems that nothing happened. I can import the GeoTIFF to GE with kml - though that is not what I want. But the GeoTIFF is better than the NITF that could not be imported to GE even with the same kml. What's wrong with GeoTIFF? I mean why I could not import it to GE? I listed the gdal_translate command line here: >gdal_translate -of GTiff tiff.tif gtiff.gtf -a_srs EPSG:4326 -gcp 0 0 >-70.887525562763 42.8093748999134 -gcp 560 0 -70.887525562763 42.8082925732318 >-gcp 560 419 -70.8894939447889 42.8082925732318 -gcp 0 419 -70.8894939447889 >42.8093748999134 I don't have a .ntif file that was not created by gdal to test GE via the "Import Image Tool". Thanks. Mo --- On Thu, 4/9/09, Roger André <ran...@gmail.com> wrote: > From: Roger André <ran...@gmail.com> > Subject: Re: [gdal-dev] Problem in importing to Google Earth a nitf image > converted from a tif image by gdal_translate > To: "mohwawang" <mohwaw...@yahoo.com> > Cc: "gdal-dev@lists.osgeo.org" <gdal-dev@lists.osgeo.org> > Date: Thursday, April 9, 2009, 12:47 PM > Hi Mo, > > Thanks for that pointer on the differences between GE > Layers and Places. I'll be sure to take a close look > at those links. I've had occasion in the past to view > georeferenced imagery in Google Earth, much of it created or > altered by gdal in some way, so this topic interests me. > > > I'm curious, is your goal to view the NITF format > specifically and to have GE read the internal georeferencing > info, or is it just to view the image in GE? It sounds > like you have already accomplished the latter using a KML > Ground Overlay and a tif, a method which has also worked > reliably for me in the past as well. I've also had > success with PNG and JPEG format files. > > > Since in your .nitf test the georeferencing was supplied by > the KML file, the red "X" you are getting implies > to me that the image format isn't being correctly > interpreted by GE for some reason. The fact that Envi > chokes on it as well does seem to point to gdal as a > possible culprit, although the NITF format is not one that I > have seen very much. Have you tried importing the GeoTIFF > version of your file directly into GE Pro as well? Also, > do you have a .nitf file that was not created by gdal, and > which you could use to test GE via the "Add Image > Overlay" tool? > > > Roger > -- > > On Thu, Apr 9, 2009 at 8:37 AM, > mohwawang <mohwaw...@yahoo.com> > wrote: > > > > Roger, > > > > I'm using Google Earth Pro 5.0. Thank you for the > suggestions. > > > > Google Earth Pro 4.0 also supports importing NITF: > > http://earth.google.com/userguide/v4/ug_importdata.html > that is for importing your data (including vector data and > imagery data) to the Places of Google Earth while > http://earth.google.com/userguide/v4/ug_imageoverlays.html > is for "Using Image Overlays and 3D Models". > > > > > See http://earth.google.com/userguide/v4/ug_layers.html#layers_vs_places > for the difference between Layers and Places in GE. > > > > > This is the first time I'm importing geo-referenced > images to Google Earth Pro and so far I don't have much > luck. As I said that I could not use GE to import the NITF > images converted from gdal_translate (with EPSG:4326 that is > the same projection, Simple Cylindrical projection, or known > as Lat/Lon WGS84 that GE uses). So I tried to narrow down > the problem. This time I imported to GE an native Erdas > IMAGINE image (.img) (with UTM projection that GE supports > too) but still failed. The later test case has nothing to do > with gdal and is purely a question for GE. That .img image > can be opened by both IMAGINE and OpenEV. > > > > > The NITF image (converted by gdal_translate) not just could > not be opened by GE it could not be opened by ENVI 4.1 > either. It can be opened by OpenEV (tightly related to gdal) > though. So it could be a problem in either gdal_translate or > ENVI (I doubt though) or both. > > > > > Thanks. > > > > Mo > > > > --- On Thu, 4/9/09, Roger André <ran...@gmail.com> > wrote: > > > > > From: Roger André <ran...@gmail.com> > > > Subject: Re: [gdal-dev] Problem in importing to Google > Earth a nitf image converted from a tif image by > gdal_translate > > > To: "mohwawang" <mohwaw...@yahoo.com> > > > Cc: "gdal-dev@lists.osgeo.org" > <gdal-dev@lists.osgeo.org> > > > Date: Thursday, April 9, 2009, 12:44 AM > > > Granted, I haven't > tried V 5 yet, > > > but your quote also states, "Google Earth Pro or > > > EC". Are you using one of those versions of > the > > > client? In any case, if the file opens in OpenEV, > chances > > > are good that the .ntf generated by gdal is ok, and > that > > > there is some sort of problem with how Google Earth > is > > > reading it. Have you tried emailing the KML support > list > > > as well? > > > > > > -- > > > > > > On Wed, Apr 8, 2009 at 8:51 PM, > > > mohwawang <mohwaw...@yahoo.com> > > > wrote: > > > > > > > > > > > > Google Earth 5.0 supports NITF see > > > > > > http://earth.google.com/intl/en/userguide/v5/ug_importdata.html > > > > > > > > > > > > [Importing Imagery > > > > > > > > > > > > You can open GIS imagery files in Google Earth Pro or > EC > > > and have the files correctly projected over the proper > map > > > coordinates in the 3D viewer. Google Earth Pro and EC > > > support the following types of GIS imagery: > > > > > > > > > > > > * TIFF (.tif), including GeoTiff and compressed > TIFF > > > files > > > > > > * National Imagery Transmission Format (.ntf) > > > > > > * Erdas Imagine Images (.img) > > > > > > > > > > > > In addition, you can also import the following > images. > > > Because they do not contain projection information, > you must > > > manually edit their coordinates for correct > positioning: > > > > > > > > > > > > * Atlantis MFF Raster (.hdr) > > > > > > * PCIDSK Database File (.pix) > > > > > > * Portable Pixmap Format (.pnm) > > > > > > * Device Independent Bitmap (.bmp) > > > > > > > > > > > > Note - All imagery files must contain the correct > > > projection information in order to be accurately > > > re-projected by the Google Earth software.] > > > > > > > > > > > > > > > > > > Mo > > > > > > > > > > > > --- On Wed, 4/8/09, Roger André <ran...@gmail.com> > > > wrote: > > > > > > > > > > > > > From: Roger André <ran...@gmail.com> > > > > > > > Subject: Re: [gdal-dev] Problem in importing to > Google > > > Earth a nitf image converted from a tif image by > > > gdal_translate > > > > > > > To: "mohwawang" <mohwaw...@yahoo.com> > > > > > > > Cc: "gdal-dev@lists.osgeo.org" > > > <gdal-dev@lists.osgeo.org> > > > > > > > Date: Wednesday, April 8, 2009, 10:45 PM > > > > > > > See > > > http://earth.google.com/userguide/v4/ug_imageoverlays.html#requirements, > > > > > > > I don't believe the "NITF (rw+): > National > > > Imagery > > > > > > > Transmission Format" is supported by Google > > > Earth. > > > > > > > > > > > > > > > > > > > > > Roger > > > > > > > -- > > > > > > > > > > > > > > On Wed, Apr 8, 2009 at 3:27 PM, > > > > > > > mohwawang <mohwaw...@yahoo.com> > > > > > > > wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > Hi all, > > > > > > > > > > > > > > > > > > > > > > > > > > > > I'm sorry that this is the third time I tried > to > > > send > > > > > > > this message out because I myself didn't get > the > > > first > > > > > > > two through gdal-dev@lists.osgeo.org > > > > > > > so I thought others might not get it either. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > I used gdal_translate to convert a tif image to > a > > > nitf > > > > > > > image as: > > > > > > > > > > > > > > >gdal_translate -of nitf in.tif out.ntf -co > > > ICORDS=G > > > > > > > > > > > > > > Input file size is 561, 420 > > > > > > > > > > > > > > > 0...10...20...30...40...50...60...70...80...90...100 > > > - > > > > > > > done. > > > > > > > > > > > > > > > > > > > > > > > > > > > > I can display both in.tif and out.ntf with > OpenEV. So > > > both > > > > > > > in.tif and out.ntf were ok to OpenEV. > > > > > > > > > > > > > > > > > > > > > > > > > > > > With a simple Google Earth kml file(specifying > the > > > > > > > LanLonBox)(printed below) I could import the > in.tif > > > to > > > > > > > Google Earth viewer to the right geo-location. > So > > > in.tif was > > > > > > > ok to GE. > > > > > > > > > > > > > > > > > > > > > > > > > > > > However, after replacing the image file name > from > > > in.tif to > > > > > > > out.ntf in the same kml file (printed below) I > could > > > not > > > > > > > import the out.ntf to Google Earth viewer (shown > as a > > > big > > > > > > > red cross in a big red rectangle at the > geo-location > > > in the > > > > > > > GE viewer). So out.ntf was not ok to GE. Any > ideal > > > about > > > > > > > what might cause the problem? Was the use of > > > gdal_translate > > > > > > > wrong or missing some options? I tried not to use > -co > > > > > > > ICRODS=G but I got the same problem. Thank you. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > printed kml for in.tif: > > > > > > > > > > > > > > > > > > > > > > > > > > > > <?xml version="1.0" > > > > > > > encoding="UTF-8"?> > > > > > > > > > > > > > > <kml xmlns="http://www.opengis.net/kml/2.2"; > > > > > > > > > > > > > > xmlns:gx="http://www.google.com/kml/ext/2.2"; > > > > > > > > > > > > > > xmlns:kml="http://www.opengis.net/kml/2.2"; > > > > > > > > > > > > > > xmlns:atom="http://www.w3.org/2005/Atom";> > > > > > > > > > > > > > > <GroundOverlay> > > > > > > > > > > > > > > <description> > > > > > > > > > > > > > > *** Meta-Data *** > > > > > > > > > > > > > > Lat = 42.808863 > > > > > > > > > > > > > > </description> > > > > > > > > > > > > > > <name>in.tif</name> > > > > > > > > > > > > > > <Icon> > > > > > > > > > > > > > > <href>in.tif</href> > > > > > > > > > > > > > > > > > > > > > > <viewBoundScale>0.75</viewBoundScale> > > > > > > > > > > > > > > </Icon> > > > > > > > > > > > > > > <LatLonBox> > > > > > > > > > > > > > > > > > <north>42.8093748999134</north> > > > > > > > > > > > > > > > > > <south>42.8082925732318</south> > > > > > > > > > > > > > > > > > <east>-70.887525562763</east> > > > > > > > > > > > > > > > > > <west>-70.8894939447889</west> > > > > > > > > > > > > > > > > > <rotation>-95.909027</rotation> > > > > > > > > > > > > > > </LatLonBox> > > > > > > > > > > > > > > </GroundOverlay> > > > > > > > > > > > > > > </kml> > > > > > > > > > > > > > > > > > > > > > > > > > > > > printed kml for out.ntf: same as in.tif > > > > > > > except: > > > > > > > > > > > > > > > > > > > > > > > > > > > > <name>out.ntf</name> > > > > > > > > > > > > > > <Icon> > > > > > > > > > > > > > > <href>out.ntf</href> > > > > > > > > > > > > > > > > > > > > > > <viewBoundScale>0.75</viewBoundScale> > > > > > > > > > > > > > > </Icon> > > > > > > > > > > > > > > > > > > > > > > > > > > > > Best Regards, > > > > > > > > > > > > > > > > > > > > > > > > > > > > Mo Wang > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > > > > > > > > > > gdal-dev mailing list > > > > > > > > > > > > > > gdal-dev@lists.osgeo.org > > > > > > > > > > > > > > http://lists.osgeo.org/mailman/listinfo/gdal-dev > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
