Image Processing - Introduction

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  • 1. October 5, 2013 1 comp_dep_educ@yahoo.com
  • 2. October 5, 2013 2 1. What is Digital Image Processing 2. Digital Image Definition 3. Image Processing Fields 4. Key Stages in Digital Image Processing 5. Differences between digital image and graphics 6. Types of images 7. Questions • This lecture will cover:
  • 3. October 5, 2013 3 “One picture is worth more than ten thousand words” Anonymous
  • 4. What is Digital Image Processing Digital: the information represents as discrete information's Image: the processes of reproduction shapes of objects Processing: achieve a sequence of action and operations on data to convert its to information's Sometimes, Image Processing is defined as “a discipline in which both the input and output of a process are images
  • 5. October 5, 2013 5  An image can be defined as a two-dimensional function f(x, y)  x, y: Spatial coordinate  f: the amplitude of any pair of coordinate x,y, which is called the intensity or gray level of the image at that point.  x, y and f, are all finite and discrete quantities. Digital Image Definition
  • 6. October 5, 2013 6 Image Processing Fields  Computer Graphics: The creation of images  Image Processing: Enhancement or other manipulation of the image  Computer Vision: Analysis of the image content
  • 7. October 5, 2013 7 Key Stages in Digital Image Processing
  • 8. October 5, 2013 8 Image Acquisition
  • 9. October 5, 2013 9 an instrument used by painters in 16 century.
  • 10. October 5, 2013 10
  • 11. Image Enhancement
  • 12. October 5, 2013 12 Image Restoration
  • 13. October 5, 2013 13 Morphological Processing
  • 14. October 5, 2013 14 Segmentation
  • 15. October 5, 2013 15 Object Recognition
  • 16. October 5, 2013 16 Representation & Description
  • 17. October 5, 2013 17 Image Compression
  • 18. October 5, 2013 18 Colour Image Processing
  • 19. Differences between digital image and graphics CG (Computer Graphics ) refers to processing of creating a new image from Geometry , Lighting parameters , Materials and Textures .Using a Computer or any other digital media While DIP(Digital Image Processing) is the process of manipulating an image acquired through some device . The image too often will be acquired from photographs, scanners , medical equipments.
  • 20. October 5, 2013 20