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Hands-On Computer Vision with Julia

You're reading from   Hands-On Computer Vision with Julia Build complex applications with advanced Julia packages for image processing, neural networks, and Artificial Intelligence

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Product type Paperback
Published in Jun 2018
Publisher Packt
ISBN-13 9781788998796
Length 202 pages
Edition 1st Edition
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Author (1):
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Dmitrijs Cudihins Dmitrijs Cudihins
Author Profile Icon Dmitrijs Cudihins
Dmitrijs Cudihins
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Table of Contents (11) Chapters Close

Preface 1. Getting Started with JuliaImages FREE CHAPTER 2. Image Enhancement 3. Image Adjustment 4. Image Segmentation 5. Image Representation 6. Introduction to Neural Networks 7. Using Pre-Trained Neural Networks 8. OpenCV 9. Assessments
10. Other Books You May Enjoy

Understanding features and descriptors

By the end of this chapter, you will understand what features are and learn to apply them in computer vision applications. Look at the following image and think about how you would solve a similar puzzle:

Most probably, you would search for patterns or specific features that are unique to the neighboring elements. Image features work similarly by representing the image in a set of parameters making them readily identified, tracked, and compared.

Let's look at two different images of cats and try finding the areas that match those images:

It seems to me that ears and eyes are common for both cats. Let's see what would one of the algorithms we will learn later in the chapter would do to the following image:

From the preceding result, you can see that the algorithm focused on the cats' ears, and this is represented by white...

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