Save Image dataset into CSV

Question

I have an Image dataset consisting of 90k images of size [64,64,3]. I have done some preprocessing to the images, which takes a lot of time if I have to do it from scratch. Now, how do I store these images/ images as a numpy array for shape[90000,64,64,3] into a csv file, as integers, along with their labels?

Is there any other way (other file type) to store this data?

P.S: I tried np.savetxt but, when I read back the data, I get strings with dots and a lot of the values are lost.

Thank you.

Answer 1

Found it!!

We can use

np.save()

to save the array in a .npy format and load the file using

np.load()

Also, multiple numpy arrays can be saved using

np.savez()

and

np.savez_compressed()

to save them in .npz and a compressed .npz format. COOL