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)

Semantic segmentation of objects in an image

In the previous section, we learned about performing segmentation on top of an image where the image contained only one object. In this segmentation, we will learn about performing segmentation so that we are able to distinguish between multiple objects that are present in an image of a road.

Getting ready

The strategy that we'll adopt to perform semantic segmentation on top of images of a road is as follows:

  1. Gather a dataset that has the annotation of where the multiple objects within an image are located:
    • A sample of the semantic image looks as follows:
  1. Convert the output mask into a multi dimensional array where there are as many columns as the number of all possible...