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PIXELHUE P20 - Page 20

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3 Terms and Definitions
www.pixelhue.com
14
Hue
Hue defines the gradation or variety of the image color. The greater
this value is, the more intense the color will be.
Saturation
Saturation defines the purity or vividness of the image color. The
greater this value is, the purer the color will be.
Color Space
Color space is a mathematical model that maps the colors that can be
reproduced by a device to a standard color model, usually the RGB
model.
Bit Depth
Bit depth refers to the color information stored in an image. The higher
the bit depth of an image, the more colors it can store.
Frame Rate
Frame rate (expressed in frames per second, or FPS) is the frequency
(rate) at which consecutive images called frames to appear on a
display. Frame rate may also be called the frame frequency, and be
expressed in hertz.
DSK
DSK (Downstream Keying) is an effect allowing one video signal to be
keyed on top of another video signal. The lightest portions of the DSK
signal replace the source video leaving the dark areas showing the
original video image.
Luma Key
Luma key refers to a process to composite a foreground clip over a
background clip based on the luma levels in a video or image. This is
most often useful for still images, such as a picture of a logo over a
black background.
Chroma Key
Chroma key refers to a process that a specific color is removed from
an image, allowing that portion of the image to be replaced. This color
can be any solid color, most commonly blue or green.
HDCP
HDCP stands for High-Bandwidth Digital Content Protection, a copy
protection scheme to eliminate the possibility of intercepting digital
data midstream between the source and the display. HDCP 1.4 is
designed for full HD content, while HDCP 2.2 relates to ultra HD 4K
media.

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