[gdal-dev] Using gdal_translate to convert tiff 2 tiff with georeferencing

[Jean-Claude Repetto]

Le 23/07/2011 16:17, Михаил a écrit :
> Hello, everybody.
> I have some images in TIFF format created in Photoshop. Also, I have
> georeferncing for each file in txt.
> If I'm working with BMP files, then i have no problems - I can use this
> command line for example
> gdal_translate -co COMPRESS=LZW -co JPEG_QUALITY=100 -a_srs "+proj=utm
> +zone=37 +datum=WGS84" "input.bmp" "output.tiff"
> Also I have created additional input.bpw file
> 2.00
> 0.00
> 0.00
> -2.00
> 395276.00
> 6206467.00
> I don't know the reason, but gdal_translate doesn't generate
> georeferencing without this input.bpw file.

Alternatively, you can use the -a_ullr option of gdal_translate.

> But then I've tried to convert tiff without georeferencing 2 tiff with
> georeferencing using next command line
> gdal_translate -co COMPRESS=LZW -co JPEG_QUALITY=100 -a_srs "+proj=utm
> +zone=37 +datum=WGS84" "input.tiff" "output.tiff"
> Unfortunately, it doesn't work. It looks like gdal_translate is taking
> reference information from input TIFF and obviously there is nothing,
> because it was created in Photoshop. If I'm using TIFF created in
> GlobalMapper with georeferencing, then all works fine. How to solve this
> poblem?

You can use the -a_ullr option of gdal_translate, or create a .tfw file 
as you did for BMP files.

Jean-Claude