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What is image processing?. Skills : choosing an image processing program IT concepts : historical context for image processing, image processing programs, image processing operations. This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. .

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what is image processing

What is image processing?

Skills: choosing an image processing program

IT concepts: historical context for image processing, image processing programs, image processing operations

This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

where does this topic fit
Where does this topic fit?
  • Internet concepts
    • Applications
    • Technology
    • Implications
  • Internet skills
    • Application development
    • Content creation (images)
slide3

Let’s begin with a question:

What data type did the first computers work with?

image processing in 1962
Image processing in 1962

Ivan Sutherland operating Sketchpad, an early example of interactive, personal computing with a graphical user interface. But, it ran on a multimillion dollar computer.

alan kay shows a video of sketchpad
Alan Kay shows a video of Sketchpad

http://www.youtube.com/watch?v=mOZqRJzE8xg&feature=related

subtle retouching of a photo
Subtle retouching of a photo
  • Crow's feet made softer
  • Whites of her eyes brightened
  • Flyaway strands hairs on the top of her head removed
  • Teeth slightly whitened
  • Skin smoothed out and given a soft glow
  • Blemish removed from her collarbone
  • Lines around her neck softened and the carotid artery in her neck erased
not so subtle
Not so subtle

From worth1000.com

abraham lincoln s head on john calhoun s body
Abraham Lincoln’s head on John Calhoun’s body

You don’t need a computer, but it makes it a lot easier.

word and image processing operations
Select text

Cut text

Copy text

Move text

Delete text

Change fonts

Change text size

Change text color

Change footnote style

Check spelling

Compress a text file

Etc. etc.

Select a portion of the image

Crop an image

Copy a portion of an image

Move a portion of an image

Delete a portion of an image

Resize an image

Rotate an image

Change image brightness

Change image contrast

Change colors

Compress an image file

Etc. etc.

Word and image processing operations

Text data

Image data

Can you think of other word and image processing operations?

popular programs
Microsoft Word (proprietary, desktop)

Open Office (open source, desktop)

Google Docs (network)

Adobe photoshop (proprietary, desktop)

Paint.net (open source, desktop)

Photoshop.com (network)

Popular programs

Word processing

Image processing

There are many other image processing programs, and they are often included with cameras.

which image processor should you use
Which image processor should you use?
  • Photoshop – used by most professional photographers and designers
  • Paint.net – open source with many features – fine for this class and most work
  • Gimp – open source program with the features of Photoshop
  • Network image processors – not ready for prime time, but keep watching
  • Any other that you have already and are familiar with

To get these and others, see the resources section at:

http://bpastudio.csudh.edu/fac/lpress/netapps/image/

slide15

We mentioned several types of data that we process. Without looking back, do you recall them?

Do you recall which decade each became a popular, mainstream data type?

Why didn’t we work with all of these data types from the start?

We listed several word processing operations. Without looking back, can you recall some of them or list them based on your experience?

We listed several image processing operations. Without looking back, can you recall some of them or list them based on your experience?

what is image processing1

What is image processing?

Skills: choosing an image processing program

IT concepts: historical context of image processing, image processing programs, image processing operations

This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.