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CS-407: Digital Image Processing

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CS-407: Digital Image Processing

Recommended Book

Introduction: 3Umer Javed, CS: 407: Digital Image Processing

Title: Digital Image Processing

Authors: R. C. Gonzalez and R. E. Woods

Edition: 3rd ,

Publisher: Pearson Prentice Hall, Year : 2008

Important Prerequisites

Linear Algebra (BS-112):

Matrix Operations

Eigen values and Eigen vectors

Signals and Systems (EE-230):

Signal Properties and Convolution

Concept of Time Domain and Frequency Domain

Domain Transformations

Digital Signal Processing (EE-332):

Filter Types

Applications of Filters

Introduction 4Umer Javed, CS: 407: Digital Image Processing

Digital Image

Introduction 5Umer Javed, CS: 407: Digital Image Processing

Two Dimensional function/Matrix.

Let be an image.

Here , are discrete and finite.

Image Z have

Pixel Values of

Z f(x, y)

f(x, y) x and y

m rows and n columns

f(x, y) 0,255

Digital Image Values

Introduction 6Umer Javed, CS: 407: Digital Image Processing

Courtesy: DIP 3/Edition

Digital Image Processing System

Umer Javed, CS: 407: Digital Image Processing Introduction 7

Digital Image Processing System

Image Acquisition Colored Image / Gray Scale Digital Still Camera, Web Cam, Scanner or other Equipment

Image Storage Proper Extension i.e. Bit Map, JPEG, TIFF etc Adjust Resolution and Selection of Storage Medium

Enhancement and Restoration Contrast, Gamma Level and Color Adjustment etc Denoising and Deblurring

Information Extraction Desired Application

Processed Output Perform some Action based upon desired application

Introduction 8Umer Javed, CS: 407: Digital Image Processing

Image Processing

Umer Javed, CS: 407: Digital Image Processing Introduction 9

Courtesy: DIP 3/Edition

Image Processing Applications

Remote Sensing

Astronomy, Satellite Pictures, Distant Transmission

Medical Imaging

X-Rays, Gamma Rays, MRI etc

Industrial Applications

Automation, Inspection

Computer Vision

Surveillance/ Security

Face Recognition, Finger Print Recognition

Umer Javed, CS: 407: Digital Image Processing Introduction 10

Remote Sensing

Umer Javed, CS: 407: Digital Image Processing Introduction 11

Remote Sensing

Umer Javed, CS: 407: Digital Image Processing Introduction 12

Remote Sensing

Umer Javed, CS: 407: Digital Image Processing Introduction 13

Courtesy: DIP 3/Edition

Remote Sensing

Umer Javed, CS: 407: Digital Image Processing Introduction 14

Figure: Hurricane Isaac 2012, Over New Orleans, USA

Courtesy: policymic.com

Remote Sensing

Umer Javed, CS: 407: Digital Image Processing Introduction 15

Figure: Curiosity's day 3 on the Gale Crater, MarsCourtesy: NASA

Panorama Creation

Umer Javed, CS: 407: Digital Image Processing Introduction 16

Figure: Panorama created out of multiple images

Medical Imaging

Umer Javed, CS: 407: Digital Image Processing Introduction 17

Medical Imaging

Umer Javed, CS: 407: Digital Image Processing Introduction 18

Medical Imaging

Umer Javed, CS: 407: Digital Image Processing Introduction 19

Figure: MRI Scanned Data of Patient

Industrial Applications

Umer Javed, CS: 407: Digital Image Processing Introduction 20

Microscopy

Umer Javed, CS: 407: Digital Image Processing Introduction 21

Surveillance/Security

Umer Javed, CS: 407: Digital Image Processing Introduction 22

Surveillance/Security

Umer Javed, CS: 407: Digital Image Processing Introduction 23

Surveillance/Security

Umer Javed, CS: 407: Digital Image Processing Introduction 24

Figure: Biometrics, Finger Print Recognition

Surveillance/Security

Umer Javed, CS: 407: Digital Image Processing Introduction 25

Figure: Car number Plate Recognition System

Overview

Umer Javed, CS: 407: Digital Image Processing Introduction 26

Overview

Umer Javed, CS: 407: Digital Image Processing Introduction 27

Umer Javed, CS: 407: Digital Image Processing Introduction 28

Next Lecture shall cover Digital Image formulation