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An Introduction to Digitisation Reading Between the Lines and Seeing Beyond the Shadows Shawn Day Department of History McMaster University 8 June 2006.

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Presentation on theme: "An Introduction to Digitisation Reading Between the Lines and Seeing Beyond the Shadows Shawn Day Department of History McMaster University 8 June 2006."— Presentation transcript:

1 An Introduction to Digitisation Reading Between the Lines and Seeing Beyond the Shadows Shawn Day Department of History McMaster University 8 June 2006

2  TAPoR Workshops Don’t Take Notes!

3 Objective Understand the digitisation process, which includes: Managing the complete digitisation cycle; Managing the complete digitisation cycle; Evaluating digitisation options; Evaluating digitisation options; Selecting strategies to meet your current and future needs; Selecting strategies to meet your current and future needs; How to collect, document, process and store digitised images and textual material on computers and to access digitised material for ongoing use. How to collect, document, process and store digitised images and textual material on computers and to access digitised material for ongoing use.

4 ObjectiveEvaluate SelectDo Manage

5 Why?What?How? Today’s Menu

6 Definitions OCR – Optical Character Recognition ASR – Automatic Speech Recognition TAPoR? Any Others You Come Across Please Yell

7 Before You Start – Why Digitise? Storage – Save Space Viewing - Retrieval Further Manipulation Changing into another form Analyis Management Starts with Knowing Where You Want to Go

8 What to Digitise Perhaps the a good question to start with

9 Sources – why reinvent the Wheel? Project Guttenberg TAPoR Website

10 Software Options Scanning Image Processing OCRAudio

11 Scanning Software with your Scanner Third Party – Why? VueScan (Windows,OSX etc.)

12 Audio ASR – Automatic Speech Recognition Dragon Naturally Speaking (Windows) $ IBM ViaVoice (Windows, OSX) $ iListen (OSX) $

13 Image Processing PhotoShop (Windows, OSX) $$ PS Elements (Windows, OSX) $ Corel PaintShop Pro (Windows) $

14 OCR Omnipage – (Windows, OSX) $$ TextBridge – (Windows, OSX) $ Software with Scanner Part of Windows XP (Did you Know?) Acrobat (A Little Different –Why?)

15 Process Three Primary Means Scan within Program Scan Externally Digital Cameras

16 How to Digitise - Preparation Quality of Original Material of Original Pre-Scan Steps Post-Scan Steps Pre-OCR Steps

17 Quality Brightness Use the Scanner Software to Preview Use the Scanner Software to Preview Balance between continuous character forms and distinction between individual characters Balance between continuous character forms and distinction between individual characters Use Black and White is good Contrast Use Greyscale if Coloured background

18 Resolution Max is 600 dpi More info always helps OCR dpi is recommended

19 Material of Original Sometimes is advisable to photocopy from books Or even from discoloured originals.

20 Text Text is an Image Clean Scanner Glass Prepare Original – Clean, Iron? Resolution?

21 Exercise 1 Objective: Turn an Image into Text

22 Exercise 2 The Complete OCR Cycle

23 Storing Considerations for Storage

24 Retrieving Finding Stuff

25 Where to Go from here So You’ve Got Some Digital Text TSH 206

26 Surprise You All Have Accounts on TAPoR

27 TAPoR Recipes Finding Themes Constructing Chronologies Generating Infrastructure Further Directions

28 Example Finding Themes An Unexplored Text  What Can We Learn?

29 Example Constructing Chronologies A Fast and Effective Starting Point

30 Example: Explore Theoretical Foundations of Text Time?

31 Further Directions You All Have TAPoR Accounts Explore Software on Lab Machines Upcoming Seminar on XML

32 Further Info Shawn Day portal.tapor.cawww.tapor.catada.mcmaster.ca


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