I have been reading about Quantum Wavelet transform and finding some problems. One of its application is that image is given as input and same image is retrieved as output with reduced size(Please correct me if I am wrong). I am able to find the functions in Qiskit to load the image data. I am not sure, how to convert the image into data, which can be loaded on to the quantum circuit? Please could someone explain me this process? Is there some MATLAB code do that?