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Generative Adversarial Networks Projects

By : Ahirwar

2.3 (3)

Buy this Book

Generative Adversarial Networks Projects

2.3 (3)

By: Ahirwar

Buy this Book

Overview of this book

Generative Adversarial Networks (GANs) have the potential to build next-generation models, as they can mimic any distribution of data. Major research and development work is being undertaken in this field since it is one of the rapidly growing areas of machine learning. This book will test unsupervised techniques for training neural networks as you build seven end-to-end projects in the GAN domain. Generative Adversarial Network Projects begins by covering the concepts, tools, and libraries that you will use to build efficient projects. You will also use a variety of datasets for the different projects covered in the book. The level of complexity of the operations required increases with every chapter, helping you get to grips with using GANs. You will cover popular approaches such as 3D-GAN, DCGAN, StackGAN, and CycleGAN, and you’ll gain an understanding of the architecture and functioning of generative models through their practical implementation. By the end of this book, you will be ready to build, train, and optimize your own end-to-end GAN models at work or in your own projects.

Preface

Who this book is for

What this book covers

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Free Chapter

Introduction to Generative Adversarial Networks

What is a GAN?

Practical applications of GANs

The detailed architecture of a GAN

Variants of GANs

Advantages of GANs

Problems with training GANs

Solving stability problems when training GANs

Summary

3D-GAN - Generating Shapes Using GANs

Introduction to 3D-GANs

Setting up a project

Preparing the data

A Keras implementation of a 3D-GAN

Training a 3D-GAN

Hyperparameter optimization

Practical applications of 3D-GANs

Summary

Face Aging Using Conditional GAN

Introducing cGANs for face aging

Setting up the project

Preparing the data

A Keras implementation of an Age-cGAN

Training the cGAN

Practical applications of Age-cGAN

Summary

Generating Anime Characters Using DCGANs

Introducing to DCGANs

Setting up the project

Downloading and preparing the anime characters dataset

Implementing a DCGAN using Keras

Training the DCGAN

Practical applications of DCGAN

Summary

Using SRGANs to Generate Photo-Realistic Images

Introducing SRGANs

Setting up the project

Downloading the CelebA dataset

The Keras implementation of SRGAN

Training the SRGAN

Practical applications of SRGANs

Summary

StackGAN - Text to Photo-Realistic Image Synthesis

Introduction to StackGAN

Architecture of StackGAN

Setting up the project

Data preparation

A Keras implementation of StackGAN

Training a StackGAN

Practical applications of StackGAN

Summary

CycleGAN - Turn Paintings into Photos

An introduction to CycleGANs

Setting up the project

Downloading the dataset

Keras implementation of CycleGAN

Training the CycleGAN

Practical applications of CycleGANs

Summary

The Keras implementation of SRGAN

As we discussed, SRGAN has three neural networks, a generator, a discriminator, and a pre-trained VGG19 network on the Imagenet dataset. In this section, we will write the implementation for all the networks. Let's start by implementing the generator network.

Before starting to write the implementations, create a Python file called main.py and import the essential modules, as follows:

import glob
import os

import numpy as np
import tensorflow as tf
from keras import Input
from keras.applications import VGG19
from keras.callbacks import TensorBoard
from keras.layers import BatchNormalization, Activation, LeakyReLU, Add, Dense, PReLU, Flatten
from keras.layers.convolutional import Conv2D, UpSampling2D
from keras.models import Model
from keras.optimizers import Adam
from keras_preprocessing.image import img_to_array, load_img
from scipy.misc import imsave...