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| Color Model| Color Model
COLOR MODEL
| There are conventionally two types of color
models
y Additive color model such as RGB
y Subtractive color model such as CMY
| Additive colors use light to display color.
| Subtractive color use printing inks.
COLOR MODEL
| RGB color model
y
y
y
y
y
y
y
y
|
COLOR MODEL
COLOR MODEL
| CMYK Color Model:
y
y
y
y
y
y
COLOR MODEL
| Storage of colors
y Direct coding
y Lookup tables
| Lets say we have 1 bit to represent colors.
| RGB would require 3 bits.
| Total possible colors are 23.
R G B
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
COLOR MODEL
| Widely accepted standard uses 3 bytes/ pixel
| How many bits for each channel (RGB) ?
| How many different colors do we have ?
| Image of 1000 x 1000 would requires how many
bytes of memory to store pixel colors ?

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Color model

  • 1. | Color Model| Color Model
  • 2. COLOR MODEL | There are conventionally two types of color models y Additive color model such as RGB y Subtractive color model such as CMY | Additive colors use light to display color. | Subtractive color use printing inks.
  • 3. COLOR MODEL | RGB color model y y y y y y y y |
  • 5. COLOR MODEL | CMYK Color Model: y y y y y y
  • 6. COLOR MODEL | Storage of colors y Direct coding y Lookup tables | Lets say we have 1 bit to represent colors. | RGB would require 3 bits. | Total possible colors are 23. R G B 0 0 0 0 0 1 0 1 0 0 1 1 1 0 0 1 0 1 1 1 0 1 1 1
  • 7. COLOR MODEL | Widely accepted standard uses 3 bytes/ pixel | How many bits for each channel (RGB) ? | How many different colors do we have ? | Image of 1000 x 1000 would requires how many bytes of memory to store pixel colors ?