How to use Wavelet downsampling image for Neural Network?

I want to use Wavelet downsampling image for Neural Network. Althrough Neural Network can't process if the image is big. I want to use Wavelet downsampling because I think it differrent from another method. So please help me how to use Wavelet downsampling for Neural Network.

[Walter Roberson]

This sounds like two independent parts. NN does not care what the data you process represents, so it doesn't care (other than data size) whether the input data is image or downsized image or random. Likewise, the code for image downsizing does not care that you are going to be using the resulting image in NN.

So just program the two parts independently and pass the downsized image into the NN input.