Wei, Can you give some explanation on what exactly you mean by 3D view. Is it enough to show the elevations on a 2D image or do you want to display a 3D with changeable perspective?
Elevation display on a 2D image is straight forward. 3D modelling is more involved. On Tue, Dec 29, 2009 at 8:19 AM, weixj2003ld <[email protected]> wrote: > Hi,Thank you for your answer in detail. > I want to display the satellite photo file in 3D,what open source tool can > do it,could you give me some advance? > Kind regards. > wei > > > 在2009-12-29，"Chaitanya kumar CH" <[email protected]> 写道： >>Wei, >> >>On Tue, Dec 29, 2009 at 2:57 AM, weixj2003ld <[email protected]> wrote: >>> Hi,Thk u for your answer. >>> 1.I want to use GDAL to get information about a satellite photo file,such >>> as >>> x,y,z,and the value of each poiont,could GDAL do that? >> >>You can certainly use GDAL for this. Refer to >> http://gdal.org/gdal_tutorial.html >> >>> 2.In gereral,the size of a satellite photo file is large(such as 100M),I >>> want to display it in a 3D viewer,which tool can display it >>> sooner,Openev?or >>> other? >> >>GDAL is routinely used to read files larger than 100MB. >>openev is a tool to view raster images in 2D. opevev uses GDAL for >>retrieving raster data. >> >>Once you have everything working, you can tweak some stuff for a >>performance boost. >> >>> Kind regards. >>> Wei >>> >>> >>> 在2009-12-28，"Chaitanya kumar CH" <[email protected]> 写道： >>>>Wei, >>>> >>>>2009/12/28 weixj2003ld <[email protected]>: >>>>> Hi, >>>>> 1.I get a satellite photo file,and its extention is .tif，and how get >>>>> the >>>>> (x,y,z) and the value of each poiont? >>>>tif is the extension for TIFF file format. You may be able to view the >>>>file in a normal image viewer. But you should be able to to view the >>>>coordinates and stuff in a geographic raster viewer like openev. >>>>Google for more viewers. >>>> >>>>> 2.Could you tell me the article which introduces the format of >>>>> satellite >>>>> photo file in detail? >>>>There is no specific format for satellite imagery. Your image is >>>>probably a processed form of a satellite image. >>>> >>>>> 3.Is tif the only format of satellite photo file? >>>>No. Refer to http://gdal.org/formats_list.html the list of raster >>>>formats supported by GDAL. >>>> >>>>> Best regards. >>>>> Wei >>>>> _______________________________________________ >>>>> gdal-dev mailing list >>>>> [email protected] >>>>> http://lists.osgeo.org/mailman/listinfo/gdal-dev >>>>> >>>> >>>>-- >>>>Best regards, >>>>Chaitanya kumar CH. >>>>/tʃaɪθənjə/ /kʊmɑr/ >>>>+91-9848167848 >>>>17.241582N 80.142635E >>> >>> >>> >> >> >> >>-- >>Best regards, >>Chaitanya kumar CH. >>/tʃaɪθənjə/ /kʊmɑr/ >>+91-9848167848 >>17.241582N 80.142635E > > > -- Best regards, Chaitanya kumar CH. /tʃaɪθənjə/ /kʊmɑr/ +91-9848167848 17.241582N 80.142635E _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
