Book Image

Hands-On Generative Adversarial Networks with PyTorch 1.x

By : John Hany, Greg Walters
Book Image

Hands-On Generative Adversarial Networks with PyTorch 1.x

By: John Hany, Greg Walters

Overview of this book

With continuously evolving research and development, Generative Adversarial Networks (GANs) are the next big thing in the field of deep learning. This book highlights the key improvements in GANs over generative models and guides in making the best out of GANs with the help of hands-on examples. This book starts by taking you through the core concepts necessary to understand how each component of a GAN model works. You'll build your first GAN model to understand how generator and discriminator networks function. As you advance, you'll delve into a range of examples and datasets to build a variety of GAN networks using PyTorch functionalities and services, and become well-versed with architectures, training strategies, and evaluation methods for image generation, translation, and restoration. You'll even learn how to apply GAN models to solve problems in areas such as computer vision, multimedia, 3D models, and natural language processing (NLP). The book covers how to overcome the challenges faced while building generative models from scratch. Finally, you'll also discover how to train your GAN models to generate adversarial examples to attack other CNN and GAN models. By the end of this book, you will have learned how to build, train, and optimize next-generation GAN models and use them to solve a variety of real-world problems.
Table of Contents (15 chapters)
Free Chapter
1
Section 1: Introduction to GANs and PyTorch
5
Section 2: Typical GAN Models for Image Synthesis

Building Your First GAN with PyTorch

In previous chapters, we covered the idea of using adversarial learning to generate simple signals with NumPy and learned about the new features and capabilities of PyTorch 1.3. It's time for us to use PyTorch to train a GAN model for generating interesting samples.

In this chapter, we will introduce you to a classic and well-performing GAN model, called DCGAN, to generate 2D images. You will learn the following:

  • The architecture of DCGANs
  • The training and evaluation of DCGANs
  • Using a DCGAN to generate handwritten digits, human faces
  • Having fun with the generator network by performing image interpolation and arithmetic calculation on the latent vectors to change the image attributes

By the end of this chapter, you will have grasped the core architecture design of GAN models for generating image data and have a better understanding of...