Date post: | 14-May-2015 |
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Technology |
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OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
Digital Image Processing and Edge Detection
Seda Albayrak
Computer Science Department of Istanbul Bilgi Univercity
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
1 Introduction
2 Examples of fields that use Digital Image Processing
3 Visibility: Depends on human perception
4 Fundamental Definitions
5 Analysis of edge detection algorithms
6 Questions
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
Do you think that is all?
Figure: Visible Light
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
More than your eyes can see
Figure: Electromagnetic SpectrumSeda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
Gamma-Ray Imaging
Figure: The gamma-ray moon
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
X-Ray Imaging
Figure: X-ray photo of a one year old girl
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
Ultraviolet Imaging
Figure: Ultaviolet and visible light of galaxies
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
Imaging in infrared bands
Figure: TV’s remote and temperature control
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
Imaging in microwave band
Figure: Plate reading
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
Are you fallible about what you see?
Figure: Examples of some well-known optical illusions andsimultaneous contrast
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
What do you see in this picture?
What is digital image?What is pixel?
What is intensity level?What is edge detection?
What is edge detection used for?
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
Digital convolution
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
Taking first derivative of a greylevel image
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
Roberts, Prewitt and Sobel edge detectors
Figure: Masks of first order edge detection algorithms
What are their properties?Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
Laplacian of a Gaussian edge detection algorithm
What about noise?
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
What is the difference?
Which one is best?
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
An example of a simple way
Seda Albayrak Digital Image Processing and Edge Detection
OutlineIntroduction
Examples of fields that use Digital Image ProcessingVisibility: Depends on human perception
Fundamental DefinitionsAnalysis of edge detection algorithms
Questions
Any Questions?
Wake up! Any questions?
Seda Albayrak Digital Image Processing and Edge Detection