(c) 2002 by yu hen hu lecture 2. introduction to digital image processing sumber: dept. of...

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

Lecture 2. Lecture 2. Introduction to Digital Introduction to Digital

Image ProcessingImage Processing

Sumber: Sumber: Dept. of Electrical and Computer Dept. of Electrical and Computer

EngineeringEngineeringECE533 Digital Image ProcessingECE533 Digital Image Processing

Univ of WisconsinUniv of Wisconsin

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

Digital Image and Digital Image Digital Image and Digital Image ProcessingProcessing

Image – A two-dimensional signal Image – A two-dimensional signal that can be observed by human that can be observed by human visual systemvisual system

Digital image – Representation of Digital image – Representation of images by sampling in time and images by sampling in time and space.space.

Digital image processing – perform Digital image processing – perform digital signal processing operations digital signal processing operations on digital images on digital images

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

Examples of DIP: Examples of DIP: CT: Computer TomographyCT: Computer Tomography

http://www.nlm.nih.gov/http://www.nlm.nih.gov/research/visible/image/head.jpgresearch/visible/image/head.jpg

Section through Visible Human Section through Visible Human Male - head, including Male - head, including cerebellum, cerebral cortex, cerebellum, cerebral cortex, brainstem, nasal passages brainstem, nasal passages (from Head subset) (from Head subset)

This is an example of the This is an example of the “visible human project” “visible human project” sponsored by NIHsponsored by NIH

DIP techniques applicable:DIP techniques applicable:– EnhancementEnhancement– Segmentation Segmentation

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

Ultrasound ImageUltrasound Image

Profiles of a Profiles of a fetus at 4 fetus at 4 months, the months, the face is about face is about 4cm long4cm long

Ultra sound Ultra sound image is image is another another imaging imaging modalitymodality

http://www.parenthood.com/parent_cfmfiles/us.cfm?N=566

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

Chapter 1: IntroductionChapter 1: Introduction

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

Chapter 1: IntroductionChapter 1: Introduction

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

Chapter 1: IntroductionChapter 1: Introduction

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

Chapter 1: IntroductionChapter 1: Introduction

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

Chapter 1: IntroductionChapter 1: Introduction

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

KompresiKompresi

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

KlasifikasiKlasifikasi

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

KelainanKelainan

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

Why DIP?Why DIP?

One picture worth One picture worth 1000 words!1000 words!

Support visual Support visual communicationcommunication

Facilitate Facilitate inspection, inspection, diagnosis of diagnosis of complex systemscomplex systems– Human bodyHuman body– ManufacturingManufacturing

Entertainment Entertainment Keep record, Keep record,

historyhistory Managing Managing

multimedia multimedia informationinformation

Security, Security, – monitoring, monitoring, – watermarking, etcwatermarking, etc

(c) 2002 by Yu Hen Hu(c) 2002 by Yu Hen Hu

Chapter 1: IntroductionChapter 1: Introduction