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Samenvatting Image Processing III SV-theorie+slides $4.29
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Samenvatting Image Processing III SV-theorie+slides

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Dit is een puur overzichtelijk document van de theorie met slides bij die als basis dient om de oefeningen te maken, er is een inhoudstafel en het formularium zit er bij, veel succes :))

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  • January 6, 2023
  • 60
  • 2022/2023
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IMAGE
PROCESSING
III

,INHOUDSOPGA
VE
Pixelbeelden ............................................................................................ 1
Vector versus pixel ............................................................................... 1
Beeldresolutie in Photoshop ................................................................... 2
Toonresolutie ....................................................................................... 3
Kleurmodus pixelbeelden ....................................................................... 4

RGB-kleurencommunicatie ........................................................................ 6
Nabootsen kleur ................................................................................... 6
Nabootsen door kleurenmenging ............................................................ 6
De wetten van Grassmann ..................................................................... 6
CIE-RGB .............................................................................................. 8
CIE-XYZ ............................................................................................ 10
CIE-Lab ............................................................................................. 11
Van CIE-Lab naar CIE-LCh ................................................................... 13
Luminantie ........................................................................................ 14
Beeldschermen – bronkleuren .............................................................. 16
Beeldschermen – gamma .................................................................... 16

Rasteren ............................................................................................... 19
Rasterhoek ........................................................................................ 19
Lineatuur ........................................................................................... 21
Rasterpuntvorm ................................................................................. 22
Rasterpercentage ............................................................................... 23
FM-rasteren ....................................................................................... 25
Hybride rasteren ................................................................................ 25
Hybride rasteren – Gemengde transities ................................................ 26
Hybride rasteren – Graduele transities .................................................. 26
Pseudo-FM ......................................................................................... 27
Concentrisch rasteren ......................................................................... 27

,Densitomerie ......................................................................................... 28
Soorten originelen .............................................................................. 28
Densiteit ........................................................................................... 29
Rasterpercentagemeting met densitometer ............................................ 31
Factoren die de rasterpercentagemeting beïnvloeden .............................. 32

CMYK-kleurencommunicatie .................................................................... 33
Papier – colorimetrische eigenschappen ................................................ 33
Inkten ............................................................................................... 34
Werkruimte ....................................................................................... 35

zwartgeneratie ...................................................................................... 39
Toevoeging K ..................................................................................... 39
Bonte kleuropbouw met skeletzwart ...................................................... 40

inleiding tot kleurenbeheer ...................................................................... 43
Inleading colour management .............................................................. 43
Kenmerken ICC CMS – architectuur ...................................................... 43
Kenmerken ICC CMS – PCS.................................................................. 44
Kenmerken van een ICC CMS – CMM .................................................... 44
Kenmerken ICC CMS – Rendering intents .............................................. 45
Kenmerken ICC CMS – ICC profielen ..................................................... 46

colour management workflows ................................................................ 47
CM en besturingssystemen .................................................................. 47
CMYK VS RGB bewerking ..................................................................... 49
Proofing ............................................................................................ 50
Beleid kleurenbeheer .......................................................................... 50

colour management in praktijk ................................................................ 52
Inleiding – stappen ............................................................................. 52
Voorbereidingsfase ............................................................................. 52
Kalibratie, karakterisatie profilering ...................................................... 52
Scanners – kalibratie .......................................................................... 53
Scanners – profilering ......................................................................... 53
Beeldschermen – kalibratie .................................................................. 53
Beeldschermen – profilering ................................................................. 54
Printers – kalibratie en profilering ......................................................... 55
Drukpers en belichters – kalibratie ........................................................ 55
Drukpers – profilering ......................................................................... 56

formularium .......................................................................................... 57

, PIXELBEELDEN

Vector versus pixel




Vector Pixel
- Objectgerichte/vectorgeoriënteerde - Pixels
beelden - Bestandgr -> afmetingen beeld
- Lijnen en vectoren (Bézier) - Resolutie-afhankelijk
- Resolutie-onafhankelijk - Bij uitvergroting -> zaagtanden ->
- Vergroten en verkleinen zonder kwaliteitsverlies
kwaliteitsverlies - Discontinu of discreet karakter
- Beeldresolutie of spatiale resolutie,
aantal pixels per eenheid v afstand
(ppi of ppcm)
- Hoe hoger resolutie hoe meer detail
- Projectie/web/app 72ppi of 96
- Print 150 a 200 ppi
- Drukwerk 200ppi
- Vergrotingsfactor Ri= L.v.Qf
- Beeldschermresolutie = aantal
pixels per inch beeldscherm vanaf
72ppi
- - een beeldscherm kan enkel pixels
weergeven - een beeld zal kleiner of
groter worden weergegeven op
scherm afhankelijk van de resolutie
van dat beeldscherm - de
beeldresolutie wordt belangrijk
wanneer we het beeld willen printen
of drukken
- Beeldresolutie naar print/druk : is
afhankelijk van de spatiale resolutie
(aantal lijnen per mm of cm)
(contrastgevoeligheid oog)




-

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