Computer Graphics Quiz 2 Flashcards
One of the primary purposes of assigning colors to the objects in a scene is to perceive depth, which helps in creating the impression of 3D.
A. True
B. False
A. True
B. False
The correct answer is True, as assigning colors to objects in a scene helps in perceiving depth, creating the impression of 3D.
Incident light tends to reflect in all directions from a rough or grainy surface. This is called
a. Specular reflection
b. Diffuse reflection
a. Specular reflection
b. Diffuse reflection
This phenomenon is called Diffuse reflection, where incident light reflects in all directions from a rough or grainy surface.
Gouraud Shading involves _______ interpolation to compute pixel colors.
a. Exponential
b. Polynomial
c. Linear
d. Quadratic
a. Exponential
b. Polynomial
c. Linear
d. Quadratic
Gouraud Shading involves Linear interpolation to compute pixel colors.
Lighting model computes color in terms of ________ values.
a. Power
b. Complexity
c. Voxel
d. Intensity
a. Power
b. Complexity
c. Voxel
d. Intensity
The lighting model computes color in terms of Intensity values.
In lighting model, to avoid indistinguishable overlapping of surfaces with different distances we use
a. Intensity Attenuation
b. Color Attenuation
c. Intensity Reflection
d. Color Reflection
a. Intensity Attenuation
b. Color Attenuation
c. Intensity Reflection
d. Color Reflection
In a lighting model, to avoid indistinguishable overlapping of surfaces with different distances, we use Intensity Attenuation.
The mapping problem in intensity mapping arises because computed intensity values are discrete.
a. True
b. False
a. True
b. False
False
Color of a surface point depends on the properties of the light source as well as the surface containing the point.
a. True
b. False
a. True
b. False
True, the color of a surface point depends on the properties of the light source as well as the surface containing the point.
Gamma correction and dithering are techniques used to minimize __________ in intensity mapping.
a. errors
b. shading
c. lighting
a. errors
b. shading
c. lighting
Gamma correction and dithering are techniques used to minimize errors in intensity mapping.
In graphics, how many light source types are generally considered?
In graphics, the number of light source types generally considered is 3.
Match the following: I. Photometer II. CRT Display III. Frame Buffer A. A device used to measure the intensity value. B. Dedicated memory that stores color information for every pixel on a computer display C. Provides the visual output by lighting phosphor dots
I-A, II-C, III-B
Color perception results from stimulation of all the three cone types together also known as the _______ theory of vision
a. Tristimulus
b. Triplestimulus
c. Triplevision
a. Tristimulus
b. Triplestimulus
c. Triplevision
Color perception results from the stimulation of all three cone types together, known as the Tristimulus theory of vision.
Which of the following is not a color model?
a. RGB
b. XYZ
c. CMY
d. ABC
a. RGB
b. XYZ
c. CMY
d. ABC
The option that is not a color model is ABC.
Three techniques are used to make synthesized surfaces look realistic (texture synthesis): projected texture, ____________ , and solid texturing.
a. texture mapping
b. color mapping
c. shade texturing
a. texture mapping
b. color mapping
c. shade texturing
To make synthesized surfaces look realistic (texture synthesis), the three techniques used are projected texture, texture mapping, and solid texturing.
Transforming 3D world coordinate scene to a 3D view coordinate system is known as 3D viewing transformation
a. True
b. False
a. True
b. False
Transforming a 3D world coordinate scene to a 3D view coordinate system is known as 3D viewing transformation, which is True.
The different spectra of light that result in the sensation of the same color are known as
a. monomers
b. polymers
c. alikemers
d. metamers
a. monomers
b. polymers
c. alikemers
d. metamers
The different spectra of light that result in the sensation of the same color are known as metamers.
Vision accomplished with cones is called ___________ vision.
Vision accomplished with cones is called photopic vision.
In ___________ projection, the projectors converge to a center of projection at finite distance.
a. parallel
b. perspective
c. distant
d. finite
a. parallel
b. perspective
c. distant
d. finite
In perspective projection, the projectors converge to a center of projection at finite distance.
Which of the following is not a perspective projection anomaly?
a. Perspective foreshortening
b. Vanishing points
c. Clipping window
d. View confusion
a. Perspective foreshortening
b. Vanishing points
c. Clipping window
d. View confusion
The answer is Clipping window.
The transformation of a 3D scene to a 2D image is known as
a. transformation
b. projection
c. view transformation
d. view window transformation
a. transformation
b. projection
c. view transformation
d. view window transformation
The transformation of a 3D scene to a 2D image is known as projection.
The fourth stage of the 3D graphics pipeline essentially simulates the process of taking a photograph.
a. True
b. False
a. True
b. False
The fourth stage of the 3D graphics pipeline essentially simulates the process of taking a photograph. The statement is True.
Also Available:
Leave a comment