[Geotools-gt2-users] adding geoinformation to TIFF files once it is processed

[ceeta <che...@gm...>]

Dear list

I have a similar problem. I am using JAI to perform Sobel Edge Detection on
an image. Once the edge detection is performed, I lose all the
georeferencing information and my output file comes out as a regular Tiff. I
need to find a way to retain/add the georeferencing information as I need it
for further processing. Is there a solution?

Chetna



Milton Jonathan-3 wrote:
> 
> Hello all,
> 
> I would like to ask you (and especially Simone, since I think this is 
> his turf), if there would be any way in which one could write 
> georeferencing information separately from the raster data itself. I 
> would imagine that the most straightforward way to do this would be to 
> write a World File (e.g., a TFW file) using something like a 
> "WorldFileWriter" class (there is already a WorldFileReader). As an 
> alternative to World Files, one could think of writing Geotiff tags onto 
> an existing TIFF file.
> Does anyone know if there is anything like that around?
> 
> Now let me just explain why I want to do this: I'm working with 
> multiband raster images, and, as far as I know, Geotools doesn't 
> currently support that (it's planned for version 2.5, right?). This way, 
> I was intending to process these multiband files using JAI/ImageIO, so 
> that the output would be a non-georeferenced TIFF file. I would thus 
> need to read the georeference info from the input file and somehow write 
> that to the output file.
> 
> Well, that's it then. Thank you all for any input on this one,
> Milton Jonathan
> 
> 
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