Announcements Chapter 8 for today. 2 More Digitization Light, Sound, Magic: Representing Multimedia Digitally © Lawrence Snyder, 2008.

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Presentation transcript:

Announcements Chapter 8 for today

2 More Digitization Light, Sound, Magic: Representing Multimedia Digitally © Lawrence Snyder, 2008

Decimal number system has ten possible numbers in the first position. 1. True 2. False

Binary has two possible numbers in the first position 1. True 2. False

Black and White Colors A byte is allocated to each RGB intensity The smallest intensity is The largest is in binary = 255 in decimal = FF in hexadecimal Black (#000000) is no color White (#FFFFFF) has full intensity for each RGB color 11-5

Practice RGB #FFFFFF = ____________ # = ____________ # = ____________ # = ____________ #00FF00 = ____________ #FF0000 = ____________ #0000FF = ____________ 6

More practice #00FFFF = ____________ #FF00FF = ____________ #FFFF00 = ____________ (255, 0, 0) = ____________ (0, 255, 0) = ____________ (255,255,0) = ____________ (255,255,255) = ____________ #AA8866 = ____________ #00CCFF = ____________

Lighten Up: Changing Color by Addition What color does this represent: Each byte contains the decimal value 200. The color is RGB(200,200,200). In HTML, write in hexadecimal #C8C8C8 Equal amounts of red, green, and blue, closer to white than black (medium gray) All colors with equal RGB values are black, white, or gray 11-8

To Increase Intensity: Add in Binary To make a lighter color of gray, change the common values to be closer to white (larger numbers) For example, add (decimal 16) to each color: RGB(216,216,216) 11-9

Video NetPoint Video on Digital Imaging

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