MullOverThings

Useful tips for everyday

# What does transpose convolution do?

## What does transpose convolution do?

Transposed Convolutions are used to upsample the input feature map to a desired output feature map using some learnable parameters. The basic operation that goes in a transposed convolution is explained below: Consider a 2×2 encoded feature map which needs to be upsampled to a 3×3 feature map.

## Which has the largest receptive field?

Retinal ganglion cells located at the center of vision, in the fovea, have the smallest receptive fields and those located in the visual periphery have the largest receptive fields.

## What is upsampling layer in CNN?

The Upsampling layer is a simple layer with no weights that will double the dimensions of input and can be used in a generative model when followed by a traditional convolutional layer.

## How do you implement transposed convolution?

Transposed Convolutional Layer:

1. Step 1: Calculate new parameters z and p’
2. Step 2: Between each row and columns of the input, insert z number of zeros.
3. Step 3: Pad the modified input image with p’ number of zeros.
4. Step 4: Carry out standard convolution on the image generated from step 3 with a stride length of 1.

## Which area of the body has the largest receptive field?

fingertips
The fingertips have the highest spatial resolution (and the smallest receptive fields) while the thigh and calf region have the lowest spatial resolution (and largest receptive fields). The spatial resolution to light-touch stimulation can be evaluated by measuring two-point discrimination thresholds.

## What is the receptive field of a CNN?

The receptive field is defined as the region in the input space that a particular CNN’s feature is looking at (i.e. be affected by). Applying a convolution C with kernel size k = 3 × 3, padding size p = 1 × 1, and stride s = 2 × 2 on a 5 × 5 input map, we will get a 3 × 3 output feature map (green map).

## How does transposed convolution work in a neural network?

So far, the convolutions we have looked at either maintain the size of their input or make it smaller. We can use the same technique to make the input tensor larger. This process is called upsampling. When we do it inside of a convolution step, it is called transposed convolution or fractional striding.

## Do you know the receptive field of convolution?

As a short motivation, convolutions are awesome but it is not enough just to understand how it works. The idea of the receptive field will help you dive into the architecture that you are using or developing.

## How to make convolutional neural network feature maps?

Applying a convolution C with kernel size k = 3 × 3, padding size p = 1 × 1, and stride s = 2 × 2 on a 5 × 5 input map, we will get a 3 × 3 output feature map (green map). Applying the same convolution on top of the 3 × 3 feature map, we will get a 2 × 2 feature map (orange map).