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ICS 61 - Graphics. Light Color Wheel Color Perception.

Date post: 24-Dec-2015
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ICS 61 - Graphics
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Page 1: ICS 61 - Graphics. Light Color Wheel Color Perception.

ICS 61 - Graphics

Page 2: ICS 61 - Graphics. Light Color Wheel Color Perception.

Light

Page 3: ICS 61 - Graphics. Light Color Wheel Color Perception.

Color Wheel

Page 4: ICS 61 - Graphics. Light Color Wheel Color Perception.

Color Perception

Page 5: ICS 61 - Graphics. Light Color Wheel Color Perception.

Rods and Cones

Page 6: ICS 61 - Graphics. Light Color Wheel Color Perception.

Red Green Blue

Page 7: ICS 61 - Graphics. Light Color Wheel Color Perception.

Red Green Blue

Page 8: ICS 61 - Graphics. Light Color Wheel Color Perception.

Hue Saturation Value

Page 9: ICS 61 - Graphics. Light Color Wheel Color Perception.

Pixels

Page 10: ICS 61 - Graphics. Light Color Wheel Color Perception.

2-D Graphics – Approaches

• Sprites (pixels, created in advance and stored in a file)

• Primitive shapes (squares, circles, etc.)• Text• Vector graphics (e.g., Flash) - outlines• Set each pixel – probably with an algorithm

(e.g., to make fireworks). “Particle systems”

Page 11: ICS 61 - Graphics. Light Color Wheel Color Perception.

Sprites

In Scratch, the different frames are called “Costumes”.

Page 12: ICS 61 - Graphics. Light Color Wheel Color Perception.

Vector graphics

Source: http://www.intmath.com/vectors/vector-art.php

Vector based images can be zoomed without pixelation.Ugly zoomed raster image.

A vector image’s outline is defined by mathematical curves.

Page 13: ICS 61 - Graphics. Light Color Wheel Color Perception.

Text – vector and bitmap

Page 14: ICS 61 - Graphics. Light Color Wheel Color Perception.

Particle Systems


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