Book Image

Practical Computer Vision

By : Abhinav Dadhich
Book Image

Practical Computer Vision

By: Abhinav Dadhich

Overview of this book

In this book, you will find several recently proposed methods in various domains of computer vision. You will start by setting up the proper Python environment to work on practical applications. This includes setting up libraries such as OpenCV, TensorFlow, and Keras using Anaconda. Using these libraries, you'll start to understand the concepts of image transformation and filtering. You will find a detailed explanation of feature detectors such as FAST and ORB; you'll use them to find similar-looking objects. With an introduction to convolutional neural nets, you will learn how to build a deep neural net using Keras and how to use it to classify the Fashion-MNIST dataset. With regard to object detection, you will learn the implementation of a simple face detector as well as the workings of complex deep-learning-based object detectors such as Faster R-CNN and SSD using TensorFlow. You'll get started with semantic segmentation using FCN models and track objects with Deep SORT. Not only this, you will also use Visual SLAM techniques such as ORB-SLAM on a standard dataset. By the end of this book, you will have a firm understanding of the different computer vision techniques and how to apply them in your applications.
Table of Contents (12 chapters)

Feature-Based Object Detection

In the previous chapter, we understood the importance of and how to model deep layered feature extraction using Convolutional Neural Networks (CNNs). In this chapter, we will learn how to model a CNN to detect where the object in the image is and also classify the object in one of our pre-decided categories.

In this chapter:

  • We will begin with a general discussion on image recognition and what is object detection
  • A working example of the popular techniques for face detection using OpenCV
  • Object detection using two-stage models such as Faster-RCNN
  • Object detection using one-stage model such as SSD
  • The major part of this chapter will be discussing deep learning-based object detectors and explaining them using a code for the demo