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Milestones
Application
Examples
Basic Features
Processing
Examples
Milestone
The First Digital Image in
History (5 Gray Levels)
15 Gray Levels Image
The First Computer Processed Image
The Most Powerful Space Telescope -
Hubble 1 Hubble
2 Hubble
3
The Sharpest-ever Image of Whirlpool
Galaxy, Taken in Jan.2005
9.5 light Year Pillar of Cold Gas & Dust rising from Eagle Nebula.
Apr.25, 2005.
The unique Edge-on view
of the disk galaxy NGC 5866. June 8 2006
The merging
of two galaxies. June 13 2006
Jupiter-size
extrasolar planet, HD 189733b Dec ?/span>9 2008
More Images from Hubble:
http://hubblesite.org/newscenter/newsdesk/archive/releases/
Application Examples
Ultrasonic Image ( < 20
MHz)
Image:
A graphic
representation or description of an
object, typically produced by an optical or
electronic device.
Basic Features
Image
Sampling
Geometry
Resolution:
Number of Pixels.
808 x 562 x
256
202 x 141 x 256
 
101 x 70 x
256
51 x 35 x 256
 
Color
Resolution:
Number of Gray Levels.
256 gray scale
levels 16 gray
scale levels
 
4 gray
scale
levels 2
gray scale levels
Histograms
The number of times that each gray scale level
presents in the image.
Before & After
Equalization
Processing
Examples
Add
& Subtract
+ 
= 
Warping
and morphing
Michel
Jackson MTV 'Black or White'
Source and Destination Images Marked with Control Points
 
Cat to
Lion
CT Scan of Thrinaxodon Skull
(Copyright Dr. Timothy Rowe, University
of Texas)
Zooming
:
Universe Simulation :
Fractal
:
Central Park
: Map
Searching
: Web Browsing
Filtering
Original Image (Copyright Snap-Shot.com)
Blurred Image
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3 x 3 Low Pass
Convolution Kernel
(2-Dimensional
9-Trem Moving
Average
Filter)
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Original Image
High Pass
Filtered
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3 x 3
High Pass
Convolution Kernel
(2-D
MA Filter)
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Edge
Detection
Original
Image
Horizontal Edge
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3 x 3 Horizontal Edge
Detection Convolution
Kernel
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Vertical
Edge
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3 x 3 Vertical Edge
Detection Convolution
Kernel
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Classification of Fruit by Color and Shape
Two-dimensional FFT
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Original
Image
Reconstructed
  Reconstruct
by Pahse
(Magnitude = 1)
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Lossless compression
BMP TIF
JPEG (DCT) ...
Processing Techniques Summary
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