Если
Повторяет строки и столбцы данных на size[0]
и size[1]
соответственно.
не помогает, тогда может быть полезен пример:
>>> import numpy as np
>>> from keras.layers import UpSampling2D
>>> from keras.models import Sequential
>>> model = Sequential()
>>> model.add(UpSampling2D(size=(2,2), input_shape=(3,3,1)))
>>> x = np.arange(9).reshape(1,3,3,1)
>>> x[0,:,:,0] # this is what x looks like initially
array([[0, 1, 2],
[3, 4, 5],
[6, 7, 8]])
>>> y = model.predict(x)
>>> y[0,:,:,0] # this is what it looks like after upsampling
array([[0., 0., 1., 1., 2., 2.],
[0., 0., 1., 1., 2., 2.],
[3., 3., 4., 4., 5., 5.],
[3., 3., 4., 4., 5., 5.],
[6., 6., 7., 7., 8., 8.],
[6., 6., 7., 7., 8., 8.]], dtype=float32)