Introduction to Digital Image Processing

andDigital Image Analysis

What is a Digital Image?

• Just an array of numbers!

50 44 23 31 38 52 75 5229 09 15 08 38 98 53 5208 07 12 15 24 30 51 5210 31 14 38 32 36 53 6714 33 38 45 53 70 69 4036 44 58 63 47 53 35 2668 76 74 76 55 47 38 3569 68 63 74 50 42 35 32

What is Digital Image Processing?

• Mathematical operations on the numbers that make up a digital picture

• Results in a new digital picture which is different from the original

REMEMBER :Start with an image -- end with an image

Low Contrast Normal Contrast

High Noise Low Noise

Unnatural Color Realistic Color

Adjusted Perspective

Sharpen

x 1.5

x 0.5

What is Digital Image Analysis?

• Using the numbers in digital pictures to get useful information or solve a problem

REMEMBER:Start with an image -- end with an answer

Digital Image Analysis:- Start with an image -- end with an answer

Digital Image Processing:- Start with an image -- end with an image