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Digital Image Fundamentals

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Presentation on theme: "Digital Image Fundamentals"— Presentation transcript:

1 Digital Image Fundamentals
Human visual system A simple image model Sampling and quantization Color models and Color imaging

2 Human Visual System Elements of visual perception

3 Human Visual System Brightness adaptation Brightness discrimination
Weber ratio Mach band pattern Simultaneous contrast

4 A simple image model Two-dimensional light-intensity function
Illumination Reflectance Typical ranges of illumination Typical ranges of reflectance Gray-level of monochrome images Grayscale

5 Sampling Digitization of the spatial coordinates

6 Quantization Digitization of the light intensity

7 Sampling and Quantization
How many samples to take? How many gray-levels to store?

8 Sampling and Quantization
Non-uniform sampling Non-uniform quantization

9 Basic relationships between pixels
Neighbors Connectivity

10 Color Imaging Light

11 Color Imaging Trichromacy and human color vision

12 Color Imaging Color image formation (acquisition)

13 Color Imaging Color models

14 Color Imaging Color models


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