How to transform images (Flip and Rotate) using Python?

[PeterWilson]

I have received imagery from a surveyor that is currently falling within the Northern Hemisphere and upside down. The following is easy to resolve if its a CAD drawing using the "Transformations" tab under the properties window of the CAD layer within ArcMap. Is there a way to apply the same transformation using Python for each image tile?

CAD: Transformation

Original Position: Northern Hemisphere and rotated.

CAD: Transformation and Rotation

CAD: Transformed (correct location)

Imagery: Current Imagery (Northern hemisphere and rotated)

Any assistance to achieve the following will be appreciated.

[JayantaPoddar]

Have you tried Flip—Help | ArcGIS Desktop ?

[DanPatterson_Retired]

I bet you don't have world files for the images... Sounds like a missing negative sign and a flop of the X and Y coordinates...  World files would be a lot faster to fix

[RebeccaStrauch__GISP]

I agree with Dan, and would first take a look at the world file first in case a negative sign is missing or reversed.

Some links that might help:

• World files for CAD datasets—Help | ArcGIS for Desktop 
• World files for raster datasets—Help | ArcGIS Desktop 
• older blog   My image is in the wrong spot | ArcGIS Blog 
• World file - Wikipedia 

If the world file doesn't work, then I would look into the flip...but make sure you know what the input world file and/or spatial reference is, so you can figure out what you need to correct it.  You can usually find out this info in ArcCatalog with are right-click to look at the properties.

(I don't have any experience with the "pillow" python mod...but I plan to check it out too).

[RichardGeoghegan2 · Accepted solution]

You could try use the third party 'Pillow' python module.

This should allow you to rotate multiple images at once.

[PeterWilson]

Hi Richard

Thanks I clean forgot about Python's Pillow module. I was able to batch all the images and correct them.