Alternative to scipy.fftpack

[dt99jay]

Many thanks for this library, I'm finding it very helpful. I'm getting the best results with phash, but would like to generate hashes in an AWS Lambda function. Lambdas have a 250Mb limit on dependencies, and SciPy takes up about 200Mb. I can probably just about squeeze imagehash and the other dependencies I need into the last 50Mb, but thought I'd check if there's an alternative to SciPy's FFT?

[JohannesBuchner]

Have you tried googling for "FFT library python"?

[dt99jay]

I see Numpy has some FFT functions but not the DCT that phash uses

[JohannesBuchner]

I don't know. Closing this now.

But I saw https://stackoverflow.com/questions/62546019/aws-lambda-how-to-manage-deployment-packages-greater-than-250mb

[JohannesBuchner]

(by googling "Lambdas have a 250Mb limit on dependencies")