GIMP image editing basics
43
KERRY JOHNSON BSCI, DIP PM, CERT IV TAE CONTENT © KERRYJ Working with digital images
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Transcript of GIMP image editing basics
KERRY JOHNSON
BSCI , DIP PM, CERT IV TAE
CONTENT © KERRYJ
Working with digital images
Acknowledgement of Country
Our time together tonight…00:00 - 00:10 Welcome
00:10 - 00:20 Some techy info about digital images
00:20-00:30 Choose and download images
00:30-00:45 Introduction to GIMP, basics of the workspace, menu setup
00:45-00:55 BREAK
00:55-01:10 Open image, scaling and cropping images
01:10-01:25 Colour correcting images
01:25-01:30 Summarise and close
Pixels – the base element of all images
What are you using your image for?Tree Frog size: 57.4 MB
Dimensions in pixels: 2000h x 3000w
Pixel density: 300 DPI (High quality)
Computer monitors: 100-120 DPI
Average internet image: 72 DPI
https://www.iprintfromhome.com/mso/understandingdpi.pdf
Camera megapixels and image quality
Megapixels = vertical x horizontal effective pixels of sensor.
Also consider - print size at desired DPI, lens quality, controls, ease of use.
What’s in a digital image?
Image file formats for sharing
Lossy compression
Details removed, reduced file size
JPG or JPEG
Lossless compression
Re-writes data, no loss of quality
PNG (can be both)
Open GIMP
Workspace setup
Reshape Toolbox
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Is everyone seeing this?
Op
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file
Scal
ing
an im
age…
Scal
ing
an im
age…
Scal
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an im
age…
Scal
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an im
age…
Scal
ing
an im
age…
Your turn…
Cro
pp
ing
an im
age…
Cro
pp
ing
an im
age…
Make it smaller but“zoom in” on important elements
Cro
pp
ing
an im
age… Your turn…
Co
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Leve
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Leve
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Co
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Hu
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Exp
lori
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colo
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op
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ns Your turn…
Save
vs.
Exp
ort
Export = output as a standard file type such as .PNG, .JPG or .GIF
Save = Save your project for later work
Do BOTH of these
You now know how to
Think about image and file size
Set up your GIMP workspace
Scale and crop images
Colour correct and enhance images
Save your work
Next steps
Take your projects and files home
Email me for a handout of this presentation
Haunt YouTube for videos about GIMP
Register interest for an intermediate course
KERRY JOHNSON
BSCI , DIP PM, CERT IV TA
CONTENT © KERRYJ
Working with digital images
