Digital Image Processingpkalra/col783/week-1-2018.pdf · Digital Image Processing General...
Transcript of Digital Image Processingpkalra/col783/week-1-2018.pdf · Digital Image Processing General...
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Digital Image Processing
Prem Kalra [email protected]
http://www.cse.iitd.ac.in/~pkalra/col783
Department of Computer Science and Engineering Indian Institute of Technology Delhi
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Digital Image Processing
General Information
Evaluation (Tentative): 2 Minors, 1 Major, Quizes (65%) Assignments >= 3 (35%) TA Indu Joshi (email: [email protected]) Vijay Kumar (email: [email protected]) Course Page http://www.cse.iitd.ernet.in/~pkalra/col783
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Digital Image Processing
Acquisition: Photography
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Digital Image Processing
X-ray/CT/MRI
Electron Microscope Remote Sensing
Thermal Imaging
Other Acquisition Modalities
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Digital Image Processing: Applications Some Applications: Biometric and Recognition
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Digital Image Processing: Applications
Object Detection
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Computational Photography
Digital Image Processing: Applications
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Digital Image Processing
2D Image 2D Image
2D Image 3D Scene/ Object
2D Image 3D Object
Image Processing
Computer Graphics
Computer Vision
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Digital Image Processing
Computer Graphics
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Digital Image Processing
Computer Vision
Real Scene
Real Camera Synthetic
Camera
Output
Image
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Digital Image Processing
Course Contents (Tentative) Fundamentals
Image Enhancement Image Segmentation Image Restoration Image Transforms Image Compression (+Video) Image Analysis: Representation/Description Recognition/Identification
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Fundamentals Image Formation
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Fundamentals Sampling and Quantization
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Fundamentals Sampling and Quantization
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l An image is a spatial representation of an object, a 2D or 3D scene.
l Abstractly, an image is a continuous function defining a rectangular region of a plane
− intensity image - proportional to radiant energy received by a sensor/detector
Fundamentals
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2D function f(x,y)
l An image can be thought of as a function with resulting values of the light intensity at each point over a planar region.
Fundamentals
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Fundamentals Image Representation
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Fundamentals Image Resolution (Spatial)
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Fundamentals Image Resolution (Spatial)
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Fundamentals Image Resolution (Spatial)
Bilinear Interpolation
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Fundamentals Image Resolution (Intensity Levels)
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Fundamentals Intensity/Luminance and Brightness
Mach Band Effect
Simultaneous Contrast
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Fundamentals Other Operations
Neighborhood N4, ND, N8
Adjacency/Connectivity
4-connected 8-connected
Distance
Euclidian D4 D8