Book Image

Neural Networks with Keras Cookbook

By : V Kishore Ayyadevara
Book Image

Neural Networks with Keras Cookbook

By: V Kishore Ayyadevara

Overview of this book

This book will take you from the basics of neural networks to advanced implementations of architectures using a recipe-based approach. We will learn about how neural networks work and the impact of various hyper parameters on a network's accuracy along with leveraging neural networks for structured and unstructured data. Later, we will learn how to classify and detect objects in images. We will also learn to use transfer learning for multiple applications, including a self-driving car using Convolutional Neural Networks. We will generate images while leveraging GANs and also by performing image encoding. Additionally, we will perform text analysis using word vector based techniques. Later, we will use Recurrent Neural Networks and LSTM to implement chatbot and Machine Translation systems. Finally, you will learn about transcribing images, audio, and generating captions and also use Deep Q-learning to build an agent that plays Space Invaders game. By the end of this book, you will have developed the skills to choose and customize multiple neural network architectures for various deep learning problems you might encounter.
Table of Contents (18 chapters)

Instance segmentation using the U-net architecture

So far, in the previous two chapters, we have learned about detecting objects and also about identifying the bounding boxes within which the objects within an image are located. In this section, we will learn about performing instance segmentation, where all the pixels belonging to a certain object are highlighted while every other pixel isn't (this is similar to masking all the other pixels that do not belong to an object with zeros and masking the pixels that belong to the object with pixel values of one).

Getting ready

To perform instance segmentation, we will perform the following:

  1. Work on a dataset that has the input image and the corresponding masked image of the...