[gdal-dev] gdal_translate JPEG to GeoTiff (help! no one answered...)

[Chaitanya kumar CH]

Marco,

Check out the '-srcwin' and '-projwin' options in
http://www.gdal.org/gdal_translate.html

On Thu, Jan 14, 2010 at 10:12 PM, Marco Afonso <taviroquai at gmail.com> wrote:
> Hmm... I think I did more than just crop... I will check original images.
>
> Anyway... can i change the corners of this jpeg?
>
> After that, may I request your help again on this email?
>
> Thanks!
>
> 2010/1/14 Chaitanya kumar CH <chaitanya.ch at gmail.com>
>>
>> Marco,
>>
>> You mentioned that you cropped the original image. I guess you left
>> the meta-data containing the projection info intact. See if you get
>> the correct locations on the map with the original uncropped image.
>> Better yet, check the original image using the '-projwin' option in
>> gdal_translate.
>>
>> On Thu, Jan 14, 2010 at 5:56 PM, Marco Afonso <taviroquai at gmail.com>
>> wrote:
>> >
>> > Thanks for answering!
>> >
>> > Did not know that gdalinfo could give information about jpeg files.
>> > I thought that only files with geo-reference information, like GeoTiff,
>> > could give results.
>> >
>> > Here is:
>> >
>> > Driver: JPEG/JPEG JFIF
>> > Files: worldmap_hires2.jpg
>> > Size is 15000, 6225
>> > Coordinate System is `'
>> > Origin = (-180.017964071749986,59.117964071850004)
>> > Pixel Size = (0.035928143500000,-0.035928143700000)
>> > Image Structure Metadata:
>> >   SOURCE_COLOR_SPACE=YCbCr
>> >   INTERLEAVE=PIXEL
>> >   COMPRESSION=JPEG
>> > Corner Coordinates:
>> > Upper Left  (-180.0179641,  59.1179641)
>> > Lower Left  (    -180.018,    -164.535)
>> > Upper Right (     358.904,      59.118)
>> > Lower Right (     358.904,    -164.535)
>> > Center      (  89.4431122, -52.7083832)
>> > Band 1 Block=15000x1 Type=Byte, ColorInterp=Red
>> >   Image Structure Metadata:
>> >     COMPRESSION=JPEG
>> > Band 2 Block=15000x1 Type=Byte, ColorInterp=Green
>> >   Image Structure Metadata:
>> >     COMPRESSION=JPEG
>> > Band 3 Block=15000x1 Type=Byte, ColorInterp=Blue
>> >   Image Structure Metadata:
>> >     COMPRESSION=JPEG
>> >
>> > Ahh... I see the corners...
>> >
>> > What should i do to change the corners? I would like to obtain -180.0,
>> > -59.1, 180, 90 (minx, miny, maxx, maxy).
>> >
>> > --
>> > Best regards,
>> > Marco Afonso
>> > ___________________________________
>> > The soul is much more than the sum of all body parts
>>
>>
>> --
>> Best regards,
>> Chaitanya kumar CH.
>> /tʃaɪθənjə/ /kʊmɑr/
>> +91-9848167848
>> 17.241582N 80.142635E
>
>
>
> --
> Best regards,
> Marco Afonso
> ___________________________________
> The soul is much more than the sum of all body parts
>



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