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DIGITAL IMAGE PROCESSING

DIGITAL IMAGE PROCESSING . Instructors: Dr J. Shanbehzadeh Shanbehzadeh@gmail.com Mostafa Mahdijo mostafa.mahdijoo@gmail.com. Kharazmi University. DIGITAL IMAGE PROCESSING. Chapter 9 – Morphological Image Processing. Instructors: Dr J. Shanbehzadeh Shanbehzadeh@gmail.com

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DIGITAL IMAGE PROCESSING

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  1. DIGITAL IMAGE PROCESSING Instructors: Dr J. Shanbehzadeh Shanbehzadeh@gmail.com MostafaMahdijo mostafa.mahdijoo@gmail.com ( J.ShanbehzadehM.Mahdijo) Kharazmi University

  2. DIGITAL IMAGE PROCESSING Chapter 9 – Morphological Image Processing Instructors: Dr J. Shanbehzadeh Shanbehzadeh@gmail.com MostafaMahdijo mostafa.mahdijoo@gmail.com ( J.ShanbehzadehM.Mahdijo)

  3. Road map of chapter 9 9.1 9.1 9.2 9.2 9.3 9.3 9.4 9.4 • Erosion and Dilation • Opening and Closing • Hit-or-Miss Transformation • Preliminaries • 9.1 Preliminaries • 9.2 Erosion and Dilation • 9.3 Opening and Closing • 9.4 Hit-or-Miss Transformation

  4. preview • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing • Morphology: form and structure • Extracting image components for : • representation and description of region shape • From • Image processing methods • Input: Image Output: Image • To Image processing methods Input: Image Output: Attributes ( J.ShanbehzadehM.Mahdijo)

  5. Preliminaries • Reflection and Translation: • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing • Translation: (B)z = {c | c = b + z, for b є B} ( J.ShanbehzadehM.Mahdijo)

  6. Preliminaries • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing • Structuring Elements : ( J.ShanbehzadehM.Mahdijo)

  7. Preliminaries • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing Structuring Elements: ( J.ShanbehzadehM.Mahdijo)

  8. Preliminaries • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing Erosion: ( J.ShanbehzadehM.Mahdijo)

  9. Preliminaries • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  10. Erosion and Dilation • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  11. Erosion and Dilation • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing • Erosion (More examples): ( J.ShanbehzadehM.Mahdijo)

  12. Erosion and Dilation • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing • Erosion (More examples): ( J.ShanbehzadehM.Mahdijo)

  13. Erosion and Dilation • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing Erosion in removing salt noise: ( J.ShanbehzadehM.Mahdijo)

  14. Erosion and Dilation • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing Dilation: ( J.ShanbehzadehM.Mahdijo)

  15. Erosion and Dilation • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  16. Erosion and Dilation • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  17. Erosion and Dilation Dilation : • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  18. Erosion and Dilation Dilation in edge detection: • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3- Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  19. Erosion and Dilation • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing Duality: Proof: ( J.ShanbehzadehM.Mahdijo)

  20. Opening and Closing • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing • opening:smoothes the contour of an object , breaks narrow isthmuses, and eliminates thin protrusions. • closing: Smooth sections of contours, but as opposed to Opening, it generally fuses narrow breaks and long thin gulfs, eliminates small holes, and fills gaps in the contour ( J.ShanbehzadehM.Mahdijo)

  21. Opening and Closing • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing • Duality ( J.ShanbehzadehM.Mahdijo)

  22. Opening and Closing opening : Separate out the circles from the lines, so that they can be counted. Opening with a disk shaped structuring element 11 pixels in diameter gives • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  23. Opening and Closing opening : Extracting the horizontal and vertical lines The results of an Opening with a 3×9 vertically and 9x3 horizontally oriented structuring element is shown • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  24. Opening and Closing Opening in removing salt noise: • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  25. Opening and Closing Opening in removing pepper noise: • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  26. Opening and Closing Closing: • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  27. Opening and Closing • Closing (More examples): • Removing the small holes while retaining the large holes • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing Closing with a 22 pixel diameter disk • Closing with a disk-shaped structuring element with a diameter larger than the smaller holes ( J.ShanbehzadehM.Mahdijo)

  28. Opening and Closing • Closing (More examples): • Enhance binary images of objects obtained from thresholding • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  29. Opening and Closing Closing for pepper noise: • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  30. Opening and Closing Closing for salt noise: • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  31. Opening and Closing • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  32. Opening and Closing • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing (a) A o B is a subset (subimage) of A. (b) If C is a subset of D, then C o B is a subset of D o B. (c) (A o B) o B = A o B. (a) A is a subset (subimage) of A • B. (b) If C is a subset of D, then C • B is a subset of D • B. (c) (A•B)•B=A•B. ( J.ShanbehzadehM.Mahdijo)

  33. Opening and Closing • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  34. The Hit-or-Miss Transformation • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing ( J.ShanbehzadehM.Mahdijo)

  35. The Hit-or-Miss Transformation • preview • 9.1- Preliminaries • 9.2-Erosion and Dilation • 9.3-Opening and Closing ( J.ShanbehzadehM.Mahdijo)

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