Conv2D is a type of convolutional layer commonly used in deep learning for image recognition tasks. It applies a set of filters to the input image to detect specific features and patterns.

Here's an example implementation of Conv2D layer using TensorFlow in Python:

```
import tensorflow as tf
# Define the input shape of the image
input_shape = (28, 28, 1) # 28x28 grayscale image
# Define the number of filters and their size
filters = 32
kernel_size = (3, 3)
# Define the input tensor
inputs = tf.keras.Input(shape=input_shape)
# Define the Conv2D layer
x = tf.keras.layers.Conv2D(filters=filters, kernel_size=kernel_size, activation='relu')(inputs)
# Print the output shape
print(x.shape)
```

In this example, we define the input shape of our image as a 28x28 grayscale image. We then define the number of filters and their size for our Conv2D layer. We create an input tensor using tf.keras.Input() and pass in the input_shape.

Next, we define the Conv2D layer using tf.keras.layers.Conv2D() and pass in the filters, kernel_size, and activation function relu. We apply this layer to the inputs tensor using functional API of TensorFlow.

Finally, we print the shape of the output tensor. The output shape of Conv2D layer will be (batch_size, height, width, filters).

Note that this is just a basic example, and in real-world applications, there may be many other parameters and layers involved in the model.

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