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. Author manuscript; available in PMC: 2019 Aug 9.
Published in final edited form as: Phys Rep. 2019 Mar 14;810:1–124. doi: 10.1016/j.physrep.2019.03.001

FIG. 44. Illustration of Max Pooling.

FIG. 44

Illustration of max-pooling over a 2 × 2 region. Notice that pooling is done at each depth (vertical axis) separately. The number of outputs is halved along each dimension due to this coarse-graining.