1. Input Layer: Represent this as a rectangular box on the far left of the diagram. Label it
with the size of the input (e.g., 256x256Ă—3).
2. Encoder Pathway (Downsampling): Draw a series of boxes to the right of the input layer
to represent the Conv2D and MaxPooling2D layers. Each box should be smaller than the
previous one to represent the decreasing size of the image. Label each box with the
number of filters and the size of the output.
3. Bottleneck: This is the part between the downsampling and upsampling pathways. Draw
a box representing the Conv2D layer, labelled with the number of filters and the output
size.
4. Decoder Pathway (Upsampling): Draw a series of boxes to the right of the bottleneck to
represent the UpSampling2D and Conv2D layers. Each box should be larger than the
previous one, signifying the increasing size of the image. Label each box with the number
of filters and the output size.
5. Output Layer: Draw a box at the far right to represent the final Conv2D layer. Label it with
the size of the output (e.g., 256Ă—256Ă—1).
6. Skip Connections: Draw lines or arrows between the corresponding layers in the encoder
and decoder pathways. These represent the skip connections where the outputs of the
Conv2D layers in the encoder are concatenated with the corresponding layers in the
decoder.
Keep in mind that each \"box\" in your diagram is actually a set of operations (Conv2D +
Activation + MaxPooling2D in the encoder, UpSampling2D + Concatenation + Conv2D in the
decoder).