Daniel Voigt Godoy - Deep Learning with PyTorch Step-by-Step A Beginner’s Guide-leanpub

Figure 5.4 - Striding the image, one step at a time
The size of the movement, in pixels, is called a stride. In our
example, the stride is one.
In code, it means we’re changing the slice of the input image:
new_region = single[:, :, 0:3, (0+1):(3+1)]
But the operation remains the same: First, an element-wise multiplication, and
then adding up the elements of the resulting matrix.
Figure 5.5 - Element-wise multiplication
new_filtered_region = new_region * identity
new_total = new_filtered_region.sum()
new_total
Convolutions | 349