[gdal-dev] the format of satellite photo file

[Chaitanya kumar CH]

Wei,

In that case you may also want to consider vectorisation
tools/algorithms. GDAL has some of them.

Here is a starting point for your search.
http://opensourcegis.org/
http://en.wikipedia.org/wiki/List_of_GIS_software

On Tue, Dec 29, 2009 at 8:55 AM, weixj2003ld <weixj2003ld at 163.com> wrote:
> Hi,
> Thank you for your answer in time.
> I do not want to display a satellite photo file in plane picture.
> I want to display it 3D picture, that is, a satellite photo file  may
> contains mountains,gorge etc,If I display it in 3D picture(shows as
> attachment),I can show it to user vividly.
> could you tell me some opensource tool that can display GDAL raster data in
> 3D viewer?
> Thank you.
> Kind regards.
>
> 在2009-12-29，"Chaitanya kumar CH" <chaitanya.ch at gmail.com> 写道：
>>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 <weixj2003ld at 163.com> 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" <chaitanya.ch at gmail.com> 写道：
>>>>Wei,
>>>>
>>>>On Tue, Dec 29, 2009 at 2:57 AM, weixj2003ld <weixj2003ld at 163.com> 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" <chaitanya.ch at gmail.com> 写道：
>>>>>>Wei,
>>>>>>
>>>>>>2009/12/28 weixj2003ld <weixj2003ld at 163.com>:
>>>>>>> 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
>>>>>>> gdal-dev at lists.osgeo.org
>>>>>>> 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
>
>
>



-- 
Best regards,
Chaitanya kumar CH.
/tʃaɪθənjə/ /kʊmɑr/
+91-9848167848
17.241582N 80.142635E