I am working with georeferenced raster images in pseudo mercator (3857). They are in TIFF with TFW- and JPG with JGW world files. The TIFFs are also available tiled. I'd like to be able to transform either of these file types to OS/GB 27700 crs (preferably the JPG/JGW). While retaining the file format as is.
Is it possible to do this in JPG without changing to TIFF as an intermediate step?
If not, is there a way to transform the TFW file along with the new TIFF?
My experiments so far have been of mixed success. Black images, or images that are only a tiny part of the original. Through the "save as"- and "raster translate" routes.
I am now working with the JPGs. I can get the raster translate to work - creates images that have been warped. However they are produced with a new black outline, which isn't ideal (though can be cropped externally I would suppose).
Is there a way to carry-out the geoTIFF warp without producing the black cutline?
That said, main issue is I need a JGW file to accompany these renders.
Is there a routine for creating JGW file for an existing JPG?
QGIS example is here: https://www.dropbox.com/s/zzqfw7hoi2v3tjv/Basic%20JPGs%200.1.qgs?dl=0 And JPG file folder (including failed renders), here: https://www.dropbox.com/sh/bxxmcvb2wrb9gl4/AACi6S6GKGPpcLUWT0o_-nKAa?dl=0