digital image processing
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Digital Image Processing
Robin WaliaECE Department
Mullana University
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What is Image Processing?
• Machine Vision
• Computer Vision
• Pattern Recognition
• Image Processing
Digtial Image Processing, Spring 2006
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Origin of DIP
Picture of earth’s moon taken by space probe in 1964. Picture made with a television camera (vidicon), transmitted to the earth by analog modulation, and digitized on the ground.
Digtial Image Processing, Spring 2006
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Medical Images
Digtial Image Processing, Spring 2006
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Multispectral Satellite Images
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Image Processing in Manufacturing
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Radar Image
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Image Processing Procedures
• Image acquisition• Enhancement• Restoration• Color processing• Compression• Morphological processing• Segmentation• Representation and description
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Digital Image Fundamentals
• Vision
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Subjective Brightness Perception
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Chapter 2: Digital Image FundamentalsChapter 2: Digital Image Fundamentals
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Chapter 2: Digital Image FundamentalsChapter 2: Digital Image Fundamentals
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Chapter 2: Digital Image FundamentalsChapter 2: Digital Image Fundamentals
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Chapter 2: Digital Image FundamentalsChapter 2: Digital Image Fundamentals
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Image Sensing and Acquisition
• Single sensor• Line scan• Array sensor• Other (MRI, Ultrasound)
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Chapter 2: Digital Image FundamentalsChapter 2: Digital Image Fundamentals
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Chapter 2: Digital Image FundamentalsChapter 2: Digital Image Fundamentals
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Chapter 2: Digital Image FundamentalsChapter 2: Digital Image Fundamentals
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Chapter 2: Digital Image FundamentalsChapter 2: Digital Image Fundamentals
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Image Sampling and Quantization
• Actual image is continuous• Digital image has a finite number of pixels and
levels
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Chapter 2: Digital Image FundamentalsChapter 2: Digital Image Fundamentals
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Spatial and Gray-Level Resolution
• Photo Id: 100x100 pixels, 4 bits (grey scale)
Color adds 50%
• Photo image Depends when you bought a digital camera
• Film editing practice: 2048x1536 color pixels, 10 bit
• Advertising copy (Vogue) 30 Mb
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Chapter 2: Digital Image FundamentalsChapter 2: Digital Image Fundamentals
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Basic Relationships
• Neighors and Neighborhoods• Adjacency and connectivitiy• Distance measures• Pixel operations• Linear and nonliear operations
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