METEOSAT SECOND GENERATION (MSG) INTRODUCTION TO RGB COLOURS

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APPLICATIONS OF METEOSAT SECOND GENERATION (MSG)

METEOSAT SECOND GENERATION (MSG)

Presentation transcript:

METEOSAT SECOND GENERATION (MSG) INTRODUCTION TO RGB COLOURS APPLICATIONS OF METEOSAT SECOND GENERATION (MSG) RGB IMAGES: PART 02 INTRODUCTION TO RGB COLOURS Author: Jochen Kerkmann (EUMETSAT) kerkmann@eumetsat.de

INTRODUCTION TO RGB COLOURS PART 2: INTRODUCTION TO RGB COLOURS

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)

The Colour Circle

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).

More RGB Colour Values Examples of colours (names) and 8-bit RGB values: Red 255, 0, 0 Fuchsia 255, 0, 255 Skyblue 153, 206, 235

RGB Colour Names A collection of color names are supported by Internet Browsers. Below, are some examples: