Book Image

Hands-On Image Processing with Python

By : Sandipan Dey
Book Image

Hands-On Image Processing with Python

By: Sandipan Dey

Overview of this book

Image processing plays an important role in our daily lives with various applications such as in social media (face detection), medical imaging (X-ray, CT-scan), security (fingerprint recognition) to robotics & space. This book will touch the core of image processing, from concepts to code using Python. The book will start from the classical image processing techniques and explore the evolution of image processing algorithms up to the recent advances in image processing or computer vision with deep learning. We will learn how to use image processing libraries such as PIL, scikit-mage, and scipy ndimage in Python. This book will enable us to write code snippets in Python 3 and quickly implement complex image processing algorithms such as image enhancement, filtering, segmentation, object detection, and classification. We will be able to use machine learning models using the scikit-learn library and later explore deep CNN, such as VGG-19 with Keras, and we will also use an end-to-end deep learning model called YOLO for object detection. We will also cover a few advanced problems, such as image inpainting, gradient blending, variational denoising, seam carving, quilting, and morphing. By the end of this book, we will have learned to implement various algorithms for efficient image processing.
Table of Contents (20 chapters)
Title Page
Copyright and Credits
Dedication
About Packt
Contributors
Preface
Index

Chapter 9. Classical Machine Learning Methods in Image Processing

In this chapter, we will discuss the application of machine learning techniques in image processing. We will define machine learning and learn about two of its algorithms, supervised and unsupervised. Then, we will continue our discussion on the application of a few popular unsupervised machine learning techniques, such as clustering, and problems such as image segmentation.

We will also be looking at applications of supervised machine learning techniques for problems such as image classification and object detection. We will be using a very popular library, scikit-learn, along with scikit-image and Python-OpenCV (cv2) to implement machine learning algorithms for image processing. This chapter is going to give you insight into machine learning algorithms and the problems they solve.

 The topics to be covered in this chapter are as follows:

  • Supervised versus unsupervised learning 
  • Unsupervised machine learning—clustering, PCA,...