Substrates Final 1-2

The three basic attributes of color are...

a. Cyan, magenta, yellow

b. Lightness, darkness, color

c. Hue, saturation and lightness

d. Black, white, gray

c. Hue, saturation and lightness

__________ is the name of the color, which places the color in its correct position in the spectrum.

a. Saturation

b. Hue

c. Lightness

d. None of the above

b. Hue

Which of the following describes the degree of purity of a given color?

a. Saturation

b. Hue

c. Lightness

d. None of the above

a. Saturation

ICC stands for

a. International color control

b. International cooperative color

c. International chroma council

d. International color consortium

d. International color consortium

Which of the following would be described as device-dependent color?

a. LAB

b. Yxy

c. LCH

d. RGB

d. RGB

Which of the following would be described as device-independent color?

a. LAB

b. XYZ

c. LCH

d. All of the above

d. All of the above

To calculate XYZ we need to

a. Multiply sample spectrum by the illuminant spectral distribution

b. Multiply sample spectrum by the human observer (color matching functions)

c. Multiply sample spectrum by the illuminant spectral distribution and the human observer

d. Can’t calculate XYZ from the spectrum

c. Multiply sample spectrum by the illuminant spectral distribution and the human observer

What is the XYZ value for a red color?

a. 36, 20, 3

b. 8, 15, 4

c. 7, 5, 23

d. 5, 14, 3

a. 36, 20, 3

What is the XYZ value for a green color?

a. 36, 20, 3

b. 8, 35, 4

c. 7, 5, 23

d. 5, 12, 23

b. 8, 35, 4

What is the XYZ value for a blue color?

a. 6, 20, 3

b. 8, 35, 4

c. 17, 5, 3

d. 5, 12, 23

d. 5, 12, 23

What is the CIE x,y for a color with CIEXYZ of 43, 90, 52 ?

a. 0.90, 0.43

b. 0.48, 0.90

c. 0.48, 0.23

d. 0.23, 0.48

d. 0.23, 0.48

The CIE LAB metric is better than CIE x,y,Y because it is

a. Easier to calculate

b. More perceptually uniform

c. Derived in 1976

d. Based on the human observer

Feedback

b. More perceptually uniform

What is the CIELAB value for a yellow color?

a. 80, 50, -50

b. 80, 50, 50

c. 80, -50, -50

d. 80, 0, 50

d. 80, 0, 50

What is the CIELAB value for a green color?

a. 50, 80, 10

b. 50, -80, 10

c. 50, -50, -50

d. 50, 0, 50

b. 50, -80, 10

What is the CIELAB value for a red color?

a. 50, 80, 10

b. 50, -80, 10

c. 50, -50, -50

d. 50, 0, 50

a. 50, 80, 10

The attribute of color perception that expresses the amount of departure from the neutral gray of the same lightness. Also referred to as chroma.

Saturation

A French name that translates to International Commission on Illumination, the main international organization concerned with color and color management.

CIE (Commission Internationale de l'Eclairage)

Color space in which values L*, a*, and b* are plotted at the right angles to one another to form a three-dimensional coordinate system.

CIE LAB

Describe a color space that can be defined only by using information on the color-rendering capabilities of a specific device. For example, the RGB color space must be generated by a monitor, a device which has specific capabilities and limitations for achieving its gamut of colors.

device dependent

Describe a color space that can be defined using the full gamut of human vision, as defined by a standard observer, independent of the color-rendering capabilities of any specific device.

device independent

The attribute of visual perception in accordance with which an area appears to emit or reflect more or less light.

lightness

The basic color of an object, such as “red,” “green,” “purple,” etc. Defined by its angular position in a cylindrical color space.

hue