How to modify the CNN architecture diagram?

In the context of data science, you can easily optimize a standard CNN architecture to detect smaller objects in high-resolution images by implementing the following strategies:

Increase network depth

You can add more Convolutional layers to capture diner detail and then increase the reception field.

Model = Sequential()
Model.add(Conv2D(32, (3, 3), activation=’relu’, padding=’same’, input_shape=(img_height, img_width, img_channels)))
Model.add(Conv2D(32, (3, 3), activation=’relu’, padding=’same’))
Model.add(MaxPooling2D((2, 2)))
Model.add(Conv2D(64, (3, 3), activation=’relu’, padding=’same’))
Model.add(Conv2D(64, (3, 3), activation=’relu’, padding=’same’))
Model.add(MaxPooling2D((2, 2)))

# Add more layers as needed

Using smaller pooling operations

You can replace large pooling layers with smaller ones to preserve spatial information and then retain the finer details in the subsequent layers.

  Model.add(MaxPooling2D((2, 2)))

Incorporate skip connection

You can also implement skip or residual connection to facilitate gradient flow and then enable the network to learn the more complex features effectively.

From tensorflow.keras.layers import Add

Def residual_block(x, filters, kernel_size=(3, 3), strides=(1, 1), activation=’relu’):
    Y = Conv2D(filters, kernel_size, strides=strides, padding=’same’, activation=activation)(x)
    Y = Conv2D(filters, kernel_size, strides=strides, padding=’same’, activation=activation)(y)
    Return Add()([x, y])

# Example usage

  Model.add(residual_block(model.output, filters=64))

Using the dilated Convolutions

You can Introduce dilated Convolutions to increase the receptive field without reducing the spatial resolution excessively.

From tensorflow.keras.layers import Conv2D

  Model.add(Conv2D(64, (3, 3), activation=’relu’, padding=’same’, dilation_rate=(2, 2)))

Adjusting the input size

You can resize the input images to smaller dimensions during the time of maintaining high resolution which would help you reduce the computational costs while retaining the essential details.

  Resized_image = tf.image.resize(input_image, [new_height, new_width])