2011

Table Of Contents
Hold-out matte A matte that prevents a foreground element from completely
obscuring an object in the background.
Traveling matte A matte that changes position or shape over time.
Color Models
A color model is a means of identifying colors in a source according to its
component parts.
RGB A color model that defines pixels according to red, green, and blue
channel values.
Hue
A specific color from the color spectrum, disregarding its saturation or value.
Saturation
The brilliance or purity of a given color. For example, the difference between
a pastel and a pure color is defined by the amount of saturation.
Chrominance
Chrominance is an image processing property that defines the hue and
saturation of a pixel.
Luminance
Luminance is an image processing property that defines the brightness of a
pixel. Expressed in percentages, 0% luminance is black and 100% luminance
is white. Values between 0 and 100% define a range of grays. Colored pixels
have a luminance value equivalent to the mean of their RGB values.
Sharpness
Sharpness can be defined as the visual sense of the abruptness of an edge. It
highlights the detail in an image or image sequence.
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