Hello @camille.w, thanks for posting. Unfortunately, the RasterObjectDetector and related transformers have been deprecated in FME 2024.0 and will be fully removed from the application in 25.0. This was a result of vulnerabilities found in the OpenCV 3.4.9 libraries used by the transformer. 

Can you confirm you created a correct system path on your machine?

Another thing you can try is downloading the required files from OpenCV (.dll/.exe) and add them to the location mentioned in the logfile: C:\Program Files\FME\plugins/opencv/ ? I have not personally tested this, so please reach out with an update! 

Just as a note, we strongly advise against creating any new workspaces with this transformer, as it will not be available moving forward. I might be more inclined to suggest the PicterraConnector, RasterExpressionEvaluator, or other online services. Happy to help, Kailin.

Hi Kailin,

Thanks for your reply!

I added the opencv folder location to environment variables → system variables → variable ‘Path’ and included ‘.DLL’ to the variable ‘PATHEXT’ to be sure it would read the .dll files too. Is there anything else I can do?

I already tried to add the .dll and .exe files directly to the FME opencv folder, but without success. Even though the rasterobjectdetectfactory.dll file is present in the folder, it cannot be found by FME.

Thank you, Camille

Hell @camille.w, I apologize I am out of ideas. Might be easier to use an older version of FME as an alternative? Happy to help, Kailin.