RGB (Red, Green, Blue) Color model:
Basically image
divided into three types. Binary image require 1 bit/pixel and it has 1 plane.
Gray scale image require 8 bit/pixel and it has 8 bitplanes. Color image having
3 planes, red green and blue, each plane require 8 bits/pixel, it has 24 bitplanes.
The RGB color model is based on a
Cartesian coordinate system whose axes represent the three primary colors of
light (R, G, and B), usually normalized to the range [0,
1]. The eight vertices of the resulting cube correspond to the three primary colors
of light, the three secondary colors, pure white and pure black.
Fig: RGB Color Model
HSV Model:
The RGB color model is an additive color model in which red, green,
and blue
light are added together in various ways to reproduce a broad array of colors.
The name of the model comes from the initials of the three additive primary colors,
red, green, and blue.
Fig: HSV Color Model
Hue, Saturation, Value
or HSV is a color model that
describes colors (hue or tint) in terms of their shade
(saturation or amount of gray) and their brightness (value or luminance).
·
1) Hue
is expressed as a number from 0 to 360 degrees representing hues of red (starts
at 0), yellow (starts at 60), green (starts at 120), cyan (starts at 180), blue
(starts at 240), and magenta (starts at 300).
· 2) Saturation is the amount of gray (0%
to 100%) in the color.
·
3) Value
(or Brightness) works in
conjunction with saturation and describes the brightness or intensity of the
color from 0% to 100%.
Color Planes:
Fig: Color Planes
MATLAB Implementation of RGB Color Extraction in GUI:
Download MATLAB code for RGB Color Extraction from following link:
http://www.2shared.com/file/evdRCAAM/code.html
MATLAB Implementation of RGB Color Extraction in GUI:
Download MATLAB code for RGB Color Extraction from following link:
http://www.2shared.com/file/evdRCAAM/code.html
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