[Qgis-user] Shifting a Geotiff image

[Ujaval Gandhi]

Hi Grant - You can do this with a simple Linear transform using the built-in
Georeferencer. I made a small video showing
how https://www.youtube.com/watch?v=8a4M32Rkwck
[https://mailtrack.io/trace/link/ebfeb1e55e3f8462089ce55d97e05185ae0619ed?url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D8a4M32Rkwck&userId=8747767&signature=8f549a955495bf81]


Hope that helps.

---
Ujaval Gandhi
Spatial Thoughts
www.spatialthoughts.com
[https://mailtrack.io/trace/link/69c992a0409ae934c5c0e2276997a6ee22503015?url=http%3A%2F%2Fwww.spatialthoughts.com&userId=8747767&signature=16f533b4cb0820fe]




[data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=3D]
On Sat, Aug 12, 2023 at 9:48 PM Martin Weis via QGIS-User
<qgis-user at lists.osgeo.org> wrote:


> Dear Perth,
> 
> On 11/08/2023 09:14, Grant Boxer via QGIS-User wrote:
> > I have a GeoTIFF image created using Web ODM and is mis-aligned by 1 to 1.5
> > m and I would like to move the image to register with the surveyed ground
> > control points. I can see vector tools to do this, but no raster tools.
> > Anyone have any suggestions.
> 
> 
> If it just a bit off, then the plugin "Freehand raster georeferencer"
> can be quick to shift it, otherwise use georeferencer from core (Layer -
> georeferencer), which is especially more flexible and the right tool if
> you have GCPs that you can use.
> Be careful, sometimes crashes can occur with certain transformation
> types, so better save beforehand (autoSaver and MemoryLayerSaver are
> your friends).
> 
> > Image created in WGS84 z51S.
> 
> Sound like UTM (good, metric CRS), though WGS84 might be geographic CRS
> (worse, pixel size undefined/different in x,y).
> 
> Cheers
> Martin
> 
> 
> 
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