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Practical Convolutional Neural Networks

By : Mohit Sewak, Karim, Pradeep Pujari

1.5 (6)

Buy this Book

Practical Convolutional Neural Networks

1.5 (6)

By: Mohit Sewak, Karim, Pradeep Pujari

Buy this Book

Overview of this book

Convolutional Neural Network (CNN) is revolutionizing several application domains such as visual recognition systems, self-driving cars, medical discoveries, innovative eCommerce and more.You will learn to create innovative solutions around image and video analytics to solve complex machine learning and computer vision related problems and implement real-life CNN models. This book starts with an overview of deep neural networkswith the example of image classification and walks you through building your first CNN for human face detector. We will learn to use concepts like transfer learning with CNN, and Auto-Encoders to build very powerful models, even when not much of supervised training data of labeled images is available. Later we build upon the learning achieved to build advanced vision related algorithms for object detection, instance segmentation, generative adversarial networks, image captioning, attention mechanisms for vision, and recurrent models for vision. By the end of this book, you should be ready to implement advanced, effective and efficient CNN models at your professional project or personal initiatives by working on complex image and video datasets.

Preface

Who this book is for

What this book covers

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Free Chapter

Deep Neural Networks – Overview

Building blocks of a neural network

Introduction to TensorFlow

Introduction to the MNIST dataset

Keras deep learning library overview

Handwritten number recognition with Keras and MNIST

Understanding backpropagation

Summary

Introduction to Convolutional Neural Networks

History of CNNs

Convolutional neural networks

Practical example – image classification

Summary

Build Your First CNN and Performance Optimization

CNN architectures and drawbacks of DNNs

Convolution and pooling operations in TensorFlow

Training a CNN

Building, training, and evaluating our first CNN

Model performance optimization

Summary

Popular CNN Model Architectures

Introduction to ImageNet

LeNet

AlexNet architecture

VGGNet architecture

GoogLeNet architecture

ResNet architecture

Summary

Transfer Learning

Feature extraction approach

Transfer learning example

Multi-task learning

Summary

Autoencoders for CNN

Introducing to autoencoders

Convolutional autoencoder

Applications

Summary

Object Detection and Instance Segmentation with CNN

The differences between object detection and image classification

Traditional, nonCNN approaches to object detection

R-CNN – Regions with CNN features

Fast R-CNN – fast region-based CNN

Faster R-CNN – faster region proposal network-based CNN

Mask R-CNN – Instance segmentation with CNN

Instance segmentation in code

References

Summary

GAN: Generating New Images with CNN

Pix2pix - Image-to-Image translation GAN

GAN – code example

Feature matching

Summary

Attention Mechanism for CNN and Visual Models

Attention mechanism for image captioning

Types of Attention

Using attention to improve visual models

References

Summary

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The differences between object detection and image classification

Let's take another example. You are watching the movie 101 Dalmatians, and you want to know how many Dalmatians you can actually count in a given movie scene from that movie. Image Classification could, at best, tell you that there is at least one dog or one Dalmatian (depending upon which level you have trained your classifier for), but not exactly how many of them there are.

Another issue with classification-based models is that they do not tell you where the identified entity in the image is. Many times, this is very important. Say, for example, you saw your neighbor's dog playing with him (Person) and his cat. You took a snap of them and wanted to extract the image of the dog from there to search on the web for its breed or similar dogs like it. The only problem here is that searching...