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Unable to use CUDA for superresolution

When selecting useGPU=true, superresolution throws the following error:

OpenCV Error: The function/feature is not implemented (The called functionality is disabled for current build or platform) in createSuperResolution_BTVL1_GPU, file /home/scot/opencv-, line 58 terminate called after throwing an instance of 'cv::Exception'

I am able to use superresolution without CUDA, although the video speed appears to double with no explanation.

Any ideas?