Computer Graphics Quiz 3 Flashcards
In the Cohen-Sutherland algorithm, how many bit codes are used to represent a region?
A. 2-bit
B. 4-bit
C. 8-bit
D. 16-bit
A. 2-bit
B. 4-bit
C. 8-bit
D. 16-bit
In the Cohen-Sutherland algorithm, 4-bit codes are used to represent a region.
Match the following.
I. Line, II. Convex fill-area, III. Convex and concave fill-area
A. Sutherland-Hodgeman algorithm, B. Cohen-Sutherland algorithm, C. Weiler-Atherton Algorithm
I. Line, II. Convex fill-area, III. Convex and concave fill-area
A. Sutherland-Hodgeman algorithm, B. Cohen-Sutherland algorithm, C. Weiler-Atherton Algorithm
In the given matching, Line corresponds to Cohen-Sutherland algorithm, Convex fill-area to Sutherland-Hodgeman algorithm, and Convex and concave fill-area to Weiler-Atherton algorithm. (I-B, II-A, III-C)
Cohen-Sutherland line clipping algorithm in 3D divides the view coordinate space into _________ coded regions.
A. 4
B. 9
C. 16
D. 27
A. 4
B. 9
C. 16
D. 27
The Cohen-Sutherland line clipping algorithm in 3D divides the view coordinate space into 27 coded regions.
‘Back Face Elimination’ is required for ____________________.
a. hidden surface removal
b. fill-area clipping
c. both hidden surface removal and fill-area clipping
a. hidden surface removal
b. fill-area clipping
c. both hidden surface removal and fill-area clipping
‘Back Face Elimination’ is required for hidden surface removal.
HSR method broadly of TWO types: ________space method and image space method
a. unhidden
b. plane
c. hidden
d. object
a. unhidden
b. plane
c. hidden
d. object
HSR method broadly of TWO types: object space method and image space method.
The Z-buffer method can be used on transparent surfaces for hidden surface removal.
a. True
b. False
a. True
b. False
The Z-buffer method can be used on transparent surfaces for hidden surface removal: False.
Coherence properties in hidden surface removal include:
a. Object coherence
b. Depth coherence
c. Texture coherence
d. Frame coherence
a. Object coherence
b. Depth coherence
c. Texture coherence
d. Frame coherence
Coherence properties in hidden surface removal include: Object coherence, Depth coherence, and Frame coherence.
Depth Sorting (Painter’s) algorithm works at
a. image space
b. object space
c. both image and object spaces
d. neither image space nor object space
a. image space
b. object space
c. both image and object spaces
d. neither image space nor object space
Depth Sorting (Painter’s) algorithm works at both image and object spaces.
Warnock’s Algorithm is a __________ method. clipping area subdivision
a. clipping
b. area subdivision
a. clipping
b. area subdivision
Warnock’s Algorithm is an area subdivision method.
In Warnock’s Algorithm, if the current square region does not contain any surface, we assign the background color.
a. True
b. False
a. True
b. False
In Warnock’s Algorithm, if the current square region does not contain any surface, we assign the background color: True.
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