Introduction to Multimedia Computing

Transcription

1 COMP 319 Lecture 01 Introduction to Multimedia Computing Fiona Yan Liu Department of Computing The Hong Kong Polytechnic University

2 Outline of Lecture 01 Introduction ti to multimedia technology Definition of multimedia History of multimedia Technology of multimedia Introduction to COMP 319 General information Subject learning outcomes Course arrangement Introduction to HTML Consulting time for the course add/drop Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 2

3 Outline of Lecture 01 Introduction ti to multimedia technology Definition of multimedia History of multimedia Technology of multimedia Introduction to COMP 319 General information Subject learning outcomes Course arrangement Introduction to HTML Consulting time for the course add/drop Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 3

4 Motivation of Study Multimedia Consistent twith ithh human s perception We perceive the world through all the senses we have at once The integration of media is natural Multimedia technology intends to imitate the human s communication with the world Drama is an typical example of multimedia The separation of media is artificial i and may often unsatisfactory Multimedia is not only the reversion of the real life but also the creation Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 4

5 Definition of Multimedia Different people have different viewpoints Multimedia has pervaded the world of entertainment, education, and business Multimedia from the user s perspective Enables information to be represented through text, audio, graphics, image, animation, and video Multimedia in computer science Computer based processing of the data includes at least two of the following elements: text, audio, graphic, image, animation, and video Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 5

6 History of Multimedia Technology Newspapers (First) Mass communication medium using text, images, and graphics The connection between computer and multimedia is a short period Memex from Vannevar Bush (1945) CD ROM specification was published (1985) and then appear on desktop in 1989 Hypertext markup language (HTML) was invented (1990) MPEG 1 was approved (1991) JPEG was approved (1992) World Wide Web (WWW) became publicly available (1992) Netscape program was created (1994) Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 6

7 Technology of Multimedia From the data Text and hypertext Audio Graphics and animation Image and video From the target Multimedia data generation Multimedia data management Multimedia data transmission From the system Hardware Software Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 7

8 Outline of Lecture 01 Introduction ti to multimedia technology Definition of multimedia History of multimedia Technology of multimedia Introduction to COMP 319 General information Subject learning outcomes Course arrangement Introduction to HTML Consulting time for the course add/drop Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 8

9 Fiona Yan Liu Associate professor in Department t of fcomputing Director of cognitive computing lab PhD from Columbia University in USA in 2005 Brain modeling, multimedia computing, artificial intelligence Lecturer Subject design Lecture teaching Course presentation grading Final examination grading Overall performance evaluation Contact with me csyliu@comp.polyu.edu.hk Sep. 4, 2014 Introduction to Multimedia Computing 9

10 Dennis Yang Liu Research hfellow in Department tof fcomputing Coordinator of cognitive computing lab PhD from The Polytechnic University in HK in 2011 Postdoc fellow at Yale University Teaching assistant Course project design Lab teaching Course project grading Quiz grading Contact twith ithdennis Sep. 4, 2014 Introduction to Multimedia Computing 10

11 General Information Lecture Lab Thu. 8:30 10:20 R601 Thu. 16:30 17:20 PQ604B Tue. 9:30 10:20 QT402 Text book Z. N. Li and M.S. Drew, "Fundamentals of Multimedia", Prentice Hall, 2003 Course web page The notes for lectures and labs will be available online by Wed. ml Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 11

12 Schedule Week Date Schedule 1 Sept. 4 Lecture 1 2 Sept. 11 Lecture 2 3 Sept. 18 Quiz 1 + Lecture 3 4 Sept. 25 Lecture 4 5 Oct. 2 Public holiday 6 Oct. 9 Quiz 2 + Lecture 5 7 Oct. 16 Lecture 6 8 Oct. 23 Quiz 3 + Lecture 7 9 Oct. 30 Lecture 8 10 Nov. 6 International conference 11 Nov. 13 Course presentation 12 Nov. 20 Lecture 9 13 Nov. 27 Quiz 4 + Lecture Dec. 1-4 Revision days Sep. 4, 2014 Introduction to Multimedia Computing 12

13 Subject Learning Outcomes Basic knowledge of multimedia computing Learned from lecture Assessment methods Individual work Four quizzes 20% Final examination 45% Basic skill of multimedia programming g Learned from lab Assessment methods Group work with 1 4 person(s) each group Course project 20% Basic ability of multimedia learning Self study Assessment methods Group work with 1 4 person(s) each group Course presentation 15% Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 13

14 Syllabus of the Lecture Basic part Hypertext representation Text compression Image data representation Image data compression Video data representation Video data compression Audio data representation Audio data compression Optional part Multimedia data management Challenges in multimedia computing Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 14

15 Outline of Lecture 01 Introduction ti to multimedia technology Definition of multimedia History of multimedia Technology of multimedia Introduction to COMP 319 General information Subject learning outcomes Course arrangement Introduction to HTML Consulting time for the course add/drop Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 15

16 Definition of HTML HTML Hypertext Markup Language Markup language Allow regular text to be marked with special symbols, that tell a program, how to display the text Example: <l><b>hello</b></l> Hypertext Normal text: to be linear Hypertext: not constrained to be linear Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 16

17 Hypertext and Normal Text Hypertext is text, which contains links to other texts. Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 17

18 Web Generation HTML documents are plain text (also known as ASCII) files that can be created using any text editor WYSIWYG editors What You See Is What You Get Microsoft FrontPage The difference between the htm and html extensions Depends on author s personal preference Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 18

19 A Example of HTML Document <html> <head> <TITLE>A SimpleHTMLExample</TITLE> </head> <body> <H1>HTML is Easy To Learn</H1> <P>Welcome to the world of HTML. This is the first paragraph. While short it is still a paragraph!</p> <P Align = center >This is the second paragraph.</p> </body> </html> Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 19

20 Web Generation using HTML Document Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 20

21 The Minimal HTML Document Each hhtml ldocument consists of head and body text Components of html document Elements content Tags Consist of: <tag name> Tags are usually paired: <P> </P> Attribute For more information, please check the tutorial Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 21

22 Outline of Lecture 01 Introduction ti to multimedia technology Definition of multimedia History of multimedia Technology of multimedia Introduction to COMP 319 General information Subject learning outcomes Course arrangement Introduction to HTML Consulting time for the course add/drop Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 22

23 2D DCT and IDCT with 8*8 Numbers Consider an image of (8*8) 2D DCT 2D IDCT Sep. 4, 2014 Lecture 01: Introduction to Multimedia Computing 23