In this section, we will learn the significance of a 1 x 1 convolution and its use cases. A 1 x 1 convolution filter is a straight multiple of the image, as shown in the following diagram:
In the preceding diagram, the 1 x 1 convolution filter value of 1 is being used on a 5 x 5 image output from the previous section, but it can be any number in practice. Here, we can see that the use of a 1 x 1 filter conserves its height and width, whereas the depth increases to the filter channel's number. This is the fundamental advantage of a 1 x 1 filter. Each of the three (1 x 1 x 3) cells in the three-dimensional ...
