DIGITAL IMAGE PROCESSING FORUM

Technical workshop

Alenka Blatnik (Bsc Graphics Engineering)

REGENSBURG 2. october 2009

SCANNING process

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Components

Scanning resolution

Scanning factors

Type of scanner

Scanning modeAdjusting the scanned image

Printing the image

Type of scanners

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Flatbed scanner

Digital camera principle

Mehatronical device

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SCANNED images

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Scanning mode

Bit Depth

Color Model

File size

File format

Resolution² × Width × Bits per sample ÷ 8,192 = File size (in kilobytes)

1 bit = 2 colours2 bits = 4 colours24 bits = 16 million colors

R G B KCMY CIE LAB

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Digital image processing in NUK

Software?

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Image manipulation: i2s BookRestorerOCR: Abbyy Finer Reader 8

Functions and Tools

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Deskew Colour modeBinarization

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LightningContrastGeometrical correction

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Eraser toolCrop ToolRead tool

Results

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Digital workflow in NUK

ODMBook order

Scanning Image manipulation

OCR

Gotic TypefaceServer based OCR & PDF

Latin TypefaceLocal OCR & PDF

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JPEG 90

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Difficulties with colour scanns

Lightning

Shading

IMAGE MANIPULATION (i2s BookRestorer)

Tools

Functions

Image

Scannedpages

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OCR (ABBYY FineReader 8)

TextEdit

Cropedpages

Workingpage

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Difficulties with ussing ABBYY OCR

Violet shading & Image rotation

Image rotation after OCR

Tonal value change

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Difficulties with ussing ABBYY OCR

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Text block deformation

Text block deformation after OCR

Image deformation after OCR

PDF (ISO 15930:2005)

PDF (PORTABLE DOCUMENT FORMAT) is a digital format for representing documents, whether they are natively in PDF, converted from other electronic formats, or digitised from paper or microform.created

Use of PDF Files

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Transfer FilesProofingPostscript UtilityPresentations and MultimediaHTML UtilityArchivingFormsEDMS (Electronic Document Management System)

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Sectors of Application for PDF/A

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Banks and InsurancesIndustryPublishersPublic Sector and Government

PDF/A compatibility key elements

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No Multimedia contentEmbedded fonts Device-independent colourspacesUse of standards-based metadata (XML)

(TYPEFACE DIGITISATION!!!)

PDF/A (ISO 19005-1:2005) PDF/A is a subset of PDF, obtained by leaving out PDF features not suited for long term archiving.This is similar to the definition of the PDF/X subset for the printing and graphic arts.

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PDF/A (ISO 19005-1:2005)

Typeface digitisation

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Colour theory 1

What is colour?

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Device dependent colour models

R G B C M Y K

PrinterPrinting machine

MonitorScannerDigital camera

Colour theory 2

Device independent colour model (CIE 1976 LAB)

ICC Colour management

MonitorOriginal book Scanner

A A A ICC AColour consistency

use of

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ICC Colour Management

ICC Workflow

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ColourmeterICC software for monitors

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?MONITOR ?SCANNER

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IT8 colour reference chartICC software for scanners

?Equipment

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Digitisation SUMMARY

Long - term digital preservation ?

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Colour scanning modeICC Colour managed workflowUse of PDF/AEmbedded fonts

Digitisation for on screen viewing ?

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Colour or grayscale scanning modeUse of PDFUse of Flash sheet turners

http://ttpdownload.bl.uk/app_files/silverlight/default.html?id=CB4C06B9-02F4-49AF-80CE-540836464A46

Digitisation for printing and mobile phones ?

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Binary scanning modeUse of PDF

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Mobile technology

Mobile phones ?

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PalmWindows MobileSymbianBlackBerry

Readers

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Mobipocet ReaderWindows ReaderTiny eBook ReaderTequilaCat Book Reader

Output format

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Microsoft WordPDF

BmOCR

Electronic paper (also: e-paper, electronic ink display)

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Polymer materialRolls of flatTouch screen tochnologyMultimedia support

http://www.youtube.com/watch?v=oq_2LiTxhls

http://www.youtube.com/watch?v=oaykGqzZX4s

BmOCR

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http://www.youtube.com/watch?v=uQMBzXaCmqY

Questions?