Comparing Gif and JPeg 1 Varying JPEG Quality High Quality Low - - PowerPoint PPT Presentation

▶

Feb 20, 2023 227 likes •285 views

Comparing Gif and JPeg 1 Varying JPEG Quality High Quality Low Quality 2 Friday, November 4, 2011 Comparing png with JPEG on Graphical Art png - 61 KB High quality JPEG 201 KB Low quality JPEG 25 KB 3 How Many RGB Colors are There?

SLIDE 1

Comparing Gif and JPeg Varying JPEG Quality

High Quality Low Quality

1 2 Friday, November 4, 2011

SLIDE 2

png - 61 KB High quality JPEG 201 KB Low quality JPEG 25 KB

Comparing png with JPEG on Graphical Art How Many RGB Colors are There?

256 Red

3 4 Friday, November 4, 2011

SLIDE 3

How Many RGB Colors are There?

256 Red * 256 Green = 65,536 Red/Green combinations

How Many RGB Colors are There?

256 Red * 256 Green * 256 Blue = 16,777,216 Red/Green/Blue combinations My display only has 2,304,000 pixels!!

5 6 Friday, November 4, 2011

SLIDE 4

Would you notice if 1/2 the colors were missing?

128 shades of red 256 shades of red

Hiding a Text Message

Red = 255, Green = 255, Blue = 0 11111111 11111111 00000000 M 01001100 11111110 11111111 00000000 Red = 254, Green = 255, Blue = 0

7 8 Friday, November 4, 2011