Colour

1.Define the meaning of CMYK and RGB

CMYK RGB
CMYK is a scheme for combining primary pigments. The C stands for cyan (aqua), M stands for magenta (pink), Y for yellow, and K for Key. The key color in today’s printing world is black but it has not always been.  All colors begin with black “darkness”, to which different color “lights” are added to produce visible colors. RGB

 

 

Color Symbolism

 

RGB diagram

whatis.techtarget.com › Topics › Computer Science › Computing fundamentals

http://www.colormatters.com/color-and-design/color-systems-rgb-and-cmyk

www.visiblelogic.com/blog/2011/05/cmyk-rgb-pms-color-systems-defined/

2. Differentiate the purpose of Channel and Colour Correction

Color correction involves controlling both an image’s contrast and its color (exercising separate control over its hue and saturation). This section explains these important imaging concepts and can divided into 6 which are Contrast Explained, Luma Explained, Gamma Explained, Chroma Explained, Primary and Secondary Color Relationships Explained and The HSL Color Space Model Explained.

Color correction is a contrast adjustments are  generally the first, adjustments made. Contrast is a way of describing an image’s tonality. If you eliminate all color from an image, reducing it to a series of grayscale tones, the contrast of the picture is seen by the distribution of dark, medium, and light tones in the image.

 

http://www.for-a.com/products/ufm100dcc/ufm100dcc_c.pdf

https://documentation.apple.com/en/color/usermanual/chapter_1_section_4.html

http://electronicimaging.spiedigitallibrary.org/article.aspx?articleid=1734803

Saturation and Brightness

Saturation is usually one property of three when used to determine a certain color and measured as percentage value.  Saturation defines a range from pure color (100%) to gray (0%) at a constant lightness level. A pure color is fully saturated.

Brightness is an one of our perception which is mainly influenced by a color’s lightness. This is probably why brightness and lightness are often mixed up. For one color of specific hue the perception of brightness is also more intense, if we increase saturation. A higher level of saturation makes a color look brighter. In relation to other colors the brightness intensity of a color is also influenced by its hue.

http://www.workwithcolor.com/color-properties-definitions-0101.htm

http://www.georeference.org/doc/colors_as_hue_saturation_and_brightness.htm

http://www.dspguide.com/ch23/5.htm

 

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