APPLICATIONS OF METEOSAT SECOND GENERATION MSG RGB IMAGES
APPLICATIONS OF METEOSAT SECOND GENERATION (MSG) RGB IMAGES: PART 02 INTRODUCTION TO RGB COLOURS Author: Version 1. 0, 30 June 2004 Jochen Kerkmann (EUMETSAT) kerkmann@eumetsat. de
PART 2: INTRODUCTION TO RGB COLOURS Version 1. 0, 30 June 2004
Definition of RGB Colours Red, Green, Blue: The three colours of light which can be mixed to produce any other colour. Coloured images are often stored as a sequence of RGB triplets or as separate red, green and blue overlays though this is not the only possible colour representation*. These colours correspond to the three "guns" in a colour cathode ray tube and to the colour receptors in the human eye. * Other commonly used colour representations are: • The CMYK colour model (Cyan Magenta Yellow and Key (black)) • The HSV colour model (Hue Saturation Value) Version 1. 0, 30 June 2004
The Colour Circle Version 1. 0, 30 June 2004
RGB Colour Values RGB colors are defined using a decimal or hexadecimal notation for the combination of Red, Green, and Blue color values (RGB). The lowest value that can be given to one light source is 0 (hex #00). The highest value is 255 (hex #FF). Version 1. 0, 30 June 2004
More RGB Colour Values Examples of colours (names) and 8 -bit RGB values: – Red – Fuchsia – Skyblue 255, 0, 0 255, 0, 255 153, 206, 235 Version 1. 0, 30 June 2004
RGB Colour Names A collection of color names are supported by Internet Browsers. Below, are some examples: Version 1. 0, 30 June 2004
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