1. Addison Wesley is an imprint of © 2010 Pearson Addison-Wesley. All rights reserved. Engineering Computation with MATLAB Second Edition by David M. Smith CHAPTER 13: Images

2. Copyright © 2010 Pearson Addison-Wesley 1-2 Objectives This chapter covers: ■ The basic representation of images ■ How to read, display, and write JPEG image files ■ Some basic operations on images ■ Some advanced image processing techniques

3. Copyright © 2010 Pearson Addison-Wesley 1-3 Image Basics

4. Copyright © 2010 Pearson Addison-Wesley 1-4 True Color Images in MATLAB

5. Copyright © 2010 Pearson Addison-Wesley 1-5 Bit-mapped Images in MATLAB

6. Copyright © 2010 Pearson Addison-Wesley 1-6 Vienna with Cloudy Sky

7. Copyright © 2010 Pearson Addison-Wesley 1-7 Cottage with Blue Sky

8. Copyright © 2010 Pearson Addison-Wesley 1-8 Color Values at Row 350

9. Copyright © 2010 Pearson Addison-Wesley 1-9 Vienna with Blue Sky (and wire)

10. Copyright © 2010 Pearson Addison-Wesley 1-10 Close-up of the Wire

11. Copyright © 2010 Pearson Addison-Wesley 1-11 Cute Dog Picture

12. Copyright © 2010 Pearson Addison-Wesley 1-12 Lake Scene

13. Copyright © 2010 Pearson Addison-Wesley 1-13 Collage Design

14. Copyright © 2010 Pearson Addison-Wesley 1-14 The Collage

15. Copyright © 2010 Pearson Addison-Wesley 1-15 Kaleidoscope Design

16. Copyright © 2010 Pearson Addison-Wesley 1-16 The Kaleidoscope

17. Copyright © 2010 Pearson Addison-Wesley 1-17 Mercator Projection Map

18. Copyright © 2010 Pearson Addison-Wesley 1-18 Rotating Globe

19. Copyright © 2010 Pearson Addison-Wesley 1-19 C-130 in Flight

20. Copyright © 2010 Pearson Addison-Wesley 1-20 C-130 Outline

21. Copyright © 2010 Pearson Addison-Wesley 1-21 Close-up of C-130 Image

22. Copyright © 2010 Pearson Addison-Wesley 1-22 Summary ■ Images represented internally in MATLAB in bit-mapped, gray scale, or true color form ■ Image files that come in a large variety of formats; MATLAB provides a single reader function and a single writer function to manipulate all the common image types ■ Common operations on images, including cropping, stretching or shrinking, and concatenating and pasting an image onto a surface ■ An engineering example showing how edge detection begins the process of extracting meaning from an image

23. Copyright © 2010 Pearson Addison-Wesley 1-23 Questions?

24. Copyright © 2010 Pearson Addison-Wesley 1-24