Book Image

Hands-On Image Generation with TensorFlow

By : Soon Yau Cheong
Book Image

Hands-On Image Generation with TensorFlow

By: Soon Yau Cheong

Overview of this book

The emerging field of Generative Adversarial Networks (GANs) has made it possible to generate indistinguishable images from existing datasets. With this hands-on book, you’ll not only develop image generation skills but also gain a solid understanding of the underlying principles. Starting with an introduction to the fundamentals of image generation using TensorFlow, this book covers Variational Autoencoders (VAEs) and GANs. You’ll discover how to build models for different applications as you get to grips with performing face swaps using deepfakes, neural style transfer, image-to-image translation, turning simple images into photorealistic images, and much more. You’ll also understand how and why to construct state-of-the-art deep neural networks using advanced techniques such as spectral normalization and self-attention layer before working with advanced models for face generation and editing. You'll also be introduced to photo restoration, text-to-image synthesis, video retargeting, and neural rendering. Throughout the book, you’ll learn to implement models from scratch in TensorFlow 2.x, including PixelCNN, VAE, DCGAN, WGAN, pix2pix, CycleGAN, StyleGAN, GauGAN, and BigGAN. By the end of this book, you'll be well versed in TensorFlow and be able to implement image generative technologies confidently.
Table of Contents (15 chapters)
1
Section 1: Fundamentals of Image Generation with TensorFlow
5
Section 2: Applications of Deep Generative Models
9
Section 3: Advanced Deep Generative Techniques

Neural style transfer

When convolutional neural networks (CNNs) outperformed all other algorithms in the ImageNet image classification competition, people started to realize the potential of it and began exploring it for other computer vision tasks. In the A Neural Algorithm of Artistic Style paper published in 2015 by Gatys et al., they demonstrated the use of CNNs to transfer the artistic style of one image to another, as shown in the following examples:

Figure 5.1 – (A) Content image. (B)-(D) Bottom image is the style image and the bigger pictures are stylized images (Source: Gatys et al., 2015, “A Neural Algorithm of Artistic Style” https://arxiv.org/abs/1508.06576)

Unlike most deep learning trainings that require tons of training data, neural style transfer requires only two images – content and style images. We can use pre-trained CNN such as VGG to transfer the style from the style image to the content image.

As shown...