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Recent questions and answers in Computer Graphics
+1
vote
1
answer
1
UGCNETJan2017III17
Which of the following is/are side effects of scan conversion ? a. Aliasing b. Unequal intensity of diagonal lines c. Overstriking in photographic applications d. Local or Global aliasing (1) a and b (2) a, b and c (3) a, c and d (4) a, b, c and d
answered
Nov 10
in
Computer Graphics
by
Rashmi Ashutosh Vish
(
69
points)

165
views
+1
vote
1
answer
2
UGCNETJune2019II30
Using the phong reflectance model, the strength of the specular highlight is determined by the angle between the view vector and the normal vector the light vector and the normal vector the light vector and the reflected vector the reflected vector and the view vector
answered
Oct 31
in
Computer Graphics
by
Rachakonda Deepika
(
29
points)

139
views
ugcnetjune2019ii
phongcolormodel
+3
votes
3
answers
3
UGCNETJune2016III16
In perspective projection, if a line segment joining a point which lies in front of the viewer to a point in back of the viewer is projected to a broken line of infinte extent. This is known as ____ View confusion Vanishing point Topological distortion Perspective foreshortening
answered
Sep 12
in
Computer Graphics
by
Nbhardwaj
(
319
points)

1.3k
views
ugcnetjune2016iii
computergraphics
projection
+1
vote
2
answers
4
UGCNETJan2017III15
Match the following : a. Glass i. Contains liquid crystal and serves as a bonding surface for a conductive coating. b. Conductive coating ii. Acts as a conductor so that a voltage can be applied across the liquid crystal. c. Liquid crystal iii. A substance which will polarize light when a voltage is ... : a b c d (1) i ii iii iv (2) i iii ii iv (3) iv iii ii i (4) iv ii i iii
answered
Sep 11
in
Computer Graphics
by
Nbhardwaj
(
319
points)

187
views
0
votes
2
answers
5
UGC NET July 2018 Q 9
Which of the following statements is/are True regarding the solution to the visibility problem in $3D$ graphics ? $S1 :$ The Painter's algorithm sorts polygons by depth and then paints (scan  converts) each Polygon on to the screen starting with ... Backface Culling refers to eliminating geometry with backfacing normals. S1 only S2 only Both S1 and S2 Neither S1 nor S2
answered
Sep 11
in
Computer Graphics
by
Nbhardwaj
(
319
points)

197
views
computergraphics
+1
vote
3
answers
6
UGCNETJune2016III17
Let us consider that the original point is (x,y) and new transformed point is (x’,y’). Further Sh$_x$ and Sh$_y$ are shearing factors in x and y directions. If we perform the y direction shear relative to x=s$_{ref}$ then the transformed point is given by $x’=x+Sh_x.(yy_{ref}); y’=y$ $x’=x; y’=y.Sh_x$ $x’=x; y’=Sh_y(xx_{ref})+y$ $x’=Sh_y.y; y’=y.(xx_{ref})$
answered
Sep 11
in
Computer Graphics
by
Nbhardwaj
(
319
points)

949
views
ugcnetjune2016iii
computergraphics
+3
votes
4
answers
7
UGCNETJune2016III14
A point P(5,1) is rotated by 90$^o$ about a pivot point (2,2). What is the coordinate of new transformed point P'? (3,5) (5,3) (2,4) (1,5)
answered
Sep 11
in
Computer Graphics
by
Nbhardwaj
(
319
points)

3.5k
views
ugcnetjune2016iii
computergraphics
rotation
+2
votes
1
answer
8
UGCNETJune2019II29
In the context of 3D computer graphics, which of the following statements is/are true? P : Orthographic transformations keep parallel lines parallel. Q : Orthographic transformations are affine transformations. Select the correct answer from the options given below: Both P and Q Neither P nor Q Only P Only Q
answered
Aug 23
in
Computer Graphics
by
sugandha05
(
53
points)

156
views
ugcnetjune2019ii
orthographictransformation
+1
vote
1
answer
9
UGCNETJune2019II27
Consider a raster system with resolution $640$ by $480$. What size is frame buffer (in bytes) for this system to store $12$ bits per pixel? $450$ kilobytes $500$ kilobytes $350$ kilobytes $400$ kilobytes
answered
Jul 10
in
Computer Graphics
by
Sanjay Sharma
Boss
(
48.8k
points)

229
views
ugcnetjune2019ii
resolutionframebuffer
+1
vote
0
answers
10
UGCNETJune2019II28
Consider the following statements regarding $2D$ transforms in computer graphics: $S1: \: \begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix} $ is a $2 \times 2$ matrix that reflects (mirrors) only $2D$ point about the Xaxis. $S2:$ A $2 \times 2$ matrix which ... $S2$? Both $S1$ and $S2$ are true Only $S1$ is true Only $S2$ is true Both $S1$ and $S2$ are false
asked
Jul 2
in
Computer Graphics
by
Arjun
Veteran
(
424k
points)

142
views
ugcnetjune2019ii
2dtransformation
+2
votes
1
answer
11
UGCNETSep2013III59
Which of the following graphics devices are known as active graphics devices? Alphanumeric devices Thumb wheels Digitizers Joystics I and II III and IV I, II and III I, II, III and IV
answered
Jun 18
in
Computer Graphics
by
HAREKRISHNA
(
27
points)

515
views
ugcnetsep2013iii
computergraphicsdevices
+1
vote
1
answer
12
UGCNETSep2013III60
A diametric projection is said to be trimetric projection when two of the three foreshortening factors are equal and third is arbitrary all of the three foreshortening factors are equal all of the three foreshortening factors are arbitrary Which of the above is true? I and II II and III I only III only
answered
Jun 13
in
Computer Graphics
by
Adnan Ashraf
(
465
points)

534
views
ugcnetsep2013iii
computergraphics
projection
+1
vote
2
answers
13
UGCNETDec2014III17
In CyrusBeck algorithm for line clipping the value of $t$ parameter is computed by the relation: (Here $P_{1}$ and $P_{2}$ are the two end points of the line, $f$ is a point on the boundary, $n_{1}$ is inner normal). $\frac{(P_{1}f_{i}).n_{i}}{(P_{2}P_{1}).n_{i}}$ ... $\frac{(f_{i}P_{2}).n_{i}}{(P_{1}P_{2}).n_{i}}$
answered
Jun 12
in
Computer Graphics
by
Adnan Ashraf
(
465
points)

764
views
ugcnetdec2014iii
nongate
graphics
lineclipping
+1
vote
1
answer
14
UGCNETAUG2016III15
Consider the Breshenham's line generation algorithm for a line with gradient greater than one, current point $(x_{ i} , y_{i} )$ and decision parameter, $d_{i}$. The next point to be plotted $(x _{i+1}, y_{i+1})$ and updated decision parameter, $d_{i+1}$, for $d_{i} < 0$ are given as _______ ... $x_{ i+1} = x_{ i + 1} y_{i+1} = y_{i + 1} d_{i+1} = d_{i} + 2 (dy  dx)$
answered
May 19
in
Computer Graphics
by
Kuljeet Shan
Active
(
1.9k
points)

338
views
ugcnetaug2016iii
computergraphics
linedrawingalgorithm
+2
votes
2
answers
15
UGCNETJuly2018II10
Consider the matrix $M=\begin{bmatrix} 2 & 0 & 2 \\ 0 & 1 & 1 \\ 0 & 0 & 1 \end{bmatrix}$ representing a set of planar (2D) geometric transformations in homogeneous coordinates. Which of the following statements about the matrix ... shearing of parameters (1,1) M represents first, a shearing of parameters (1, 1) followed by scaling of vector (3,1)
answered
May 6
in
Computer Graphics
by
ApoorvaRaikar
(
39
points)

1.5k
views
ugcnetjuly2018ii
computergraphics
2dgeometry
+1
vote
0
answers
16
2D Transformations
Find the transformation matrix that converts a square with diagonal vertices (0,3) and (3,6) into a unit square at the origin??
asked
Jan 6
in
Computer Graphics
by
Pramod2k18
(
11
points)

157
views
+1
vote
2
answers
17
UGCNETJuly2018II8
A graphic display system has a frame buffer that is 640 pixels high ans 1 bit of color depth. If the access time for each pixel on the average is 200 nanoseconds, then the refresh rate of this frame buffer is approximately: 16 frames per second 19 frames per second 21 frames per second 23 frames per second
answered
Oct 23, 2018
in
Computer Graphics
by
lekshmisopanam
(
337
points)

2.4k
views
ugcnetjuly2018ii
computergraphics
displaysystem
+1
vote
1
answer
18
UGCNETJan2017III16
Below are the few steps given for scanconverting a circle using Bresenham’s Algorithm. Which of the given steps is not correct ? (1) Compute $d = 3 – 2r$ (where r is radius) (2) Stop if $x > y$ (3) If $d < 0$, then $d = 4x + 6$ and $x = x + 1$ (4) If $d ≥ 0$, then $d = 4 ∗ (x – y) + 10, x = x + 1$ and $y = y + 1$
answered
Sep 6, 2018
in
Computer Graphics
by
Mayank Malik
(
37
points)

190
views
+1
vote
2
answers
19
UGCNETJan2017III18
Consider a line AB with A = (0, 0) and B = (8, 4). Apply a simple DDA algorithm and compute the first four plots on this line. (1) [(0, 0), (1, 1), (2, 1), (3, 2)] (2) [(0, 0), (1, 1.5), (2, 2), (3, 3)] (3) [(0, 0), (1, 1), (2, 2.5), (3, 3)] (4) [(0, 0), (1, 2), (2, 2), (3, 2)]
answered
Aug 11, 2018
in
Computer Graphics
by
hkPriya sharma
(
11
points)

289
views
0
votes
1
answer
20
UGCNETJuly2018II9
Which of the following statements is/are True regarding the solution of the visibility problem in 3D graphics? S1: The painter's algorithm sorts polygons by depth and then paints (scan  converts) each Polygon on to the screen starting with the most ... S2: Backface Culling refers to eliminating geometry with backfacing normals S1 only S2 only Both S1 and S2 Neither S1 nor S2
answered
Jul 14, 2018
in
Computer Graphics
by
shahidhope
Junior
(
849
points)

726
views
ugcnetjuly2018ii
computergraphics
3dgraphics
+1
vote
2
answers
21
UGCNETAUG2016III18
The LiangBarsky line clipping algorithm uses the parametric equation of a line from $(x_{1} , y_{1} )$ to $(x_{2} , y_{2} )$ along with its infinite extension which is given as : $x = x_{1} + \Delta x.u$ $y = y_{1} + \Delta y.u$ ... is given as : $(0, \frac{2}{3})$ $\left(\frac{1}{6},\frac{5}{6}\right)$ $(0, \frac{1}{3})$ $(0, 1)$
answered
Jun 28, 2018
in
Computer Graphics
by
simranjit singh
(
31
points)

878
views
ugcnetaug2016iii
computergraphics
linedrawingalgorithm
+1
vote
1
answer
22
UGCNETNov2017iii18
The three aspects of Quantization, programmers generally concerned with are: A. Coding error, Sampling rate and Amplification B. Sampling rate, Coding error and Conditioning C. Sampling rate, Aperture time and Coding error D. Aperture time, Coding error and Strobing
answered
Jun 11, 2018
in
Computer Graphics
by
Prasanjeet Ghosh
Active
(
1.9k
points)

315
views
ugcnetnov2017iii
computergraphics
digitalimageprocessing
+1
vote
2
answers
23
UGCNETNov2017iii15
With respect to CRT, the horizontal retrace is defined as: A. The path an electron beam takes when returning to the left side of the CRT. B. The path an electron beam takes when returning to the right side of the CRT. C. The technique of turning, the electron beam off while retracing. D. The technique of turning, the electron beam on/ off while retracing.
answered
Jun 11, 2018
in
Computer Graphics
by
Prasanjeet Ghosh
Active
(
1.9k
points)

410
views
ugcnetnov2017iii
computergraphics
crt
+1
vote
1
answer
24
UGCNETNov2017iii14
Which of the following is not true in case of Oblique Projections? A. Parallel projection rays are not perpendicular to the viewing plane. B. Parallel lines in space appear parallel on the final projected image. C. Used exclusively for pictorial purposes rather than formal working drawings. D. Projectors are always perpendicular to the plane of projection.
answered
Jun 11, 2018
in
Computer Graphics
by
Prasanjeet Ghosh
Active
(
1.9k
points)

343
views
ugcnetnov2017iii
computergraphics
projection
+1
vote
1
answer
25
UGCNETNov2017iii13
Which of the following is not a component of Memory tube display? A. Flooding gun B. Collector C. Ground D. Liquid Crystal
answered
Jun 11, 2018
in
Computer Graphics
by
Prasanjeet Ghosh
Active
(
1.9k
points)

469
views
ugcnetnov2017iii
computergraphics
0
votes
3
answers
26
UGCNETJune2014III05
Which of the following color models are defined with three primary colors ? RGB and HSV color models CMY and HSV color models HSV and HLS color models RGB and CMY color models
answered
May 12, 2018
in
Computer Graphics
by
Prasanjeet Ghosh
Active
(
1.9k
points)

1k
views
ugcnetjune2014iii
nongate
graphics
computergraphics
0
votes
2
answers
27
UGCNETJune2014III03
Given below are certain output primitives and their associated attributes. Match each primitive with its corresponding attributes: ListI ListII a. Line i. Type, Size, Color b. Fill Area ii. Color, Size, Font c. Text iii. Style, Color, Pattern d. Marker iv. Type, Width, Color ai; bii; ciii; div aii; bi; ciii; div aiv; biii; cii; di aiii; bi; civ; dii
answered
May 12, 2018
in
Computer Graphics
by
Prasanjeet Ghosh
Active
(
1.9k
points)

628
views
ugcnetjune2014iii
nongate
computergraphics
+1
vote
2
answers
28
UGCNETJune2014III02
Line caps are used for adjusting the shape of the line ends to give them a better appearance. Various kinds of line caps used are Butt cap and sharp cap Butt cap and round cap Butt cap, sharp cap and round cap Butt cap, round cap and projecting square cap
answered
May 12, 2018
in
Computer Graphics
by
Prasanjeet Ghosh
Active
(
1.9k
points)

875
views
ugcnetjune2014iii
nongate
graphics
+4
votes
3
answers
29
ISRO201434
How much memory is required to implement zbuffer algorithm for a 512 x 512 x 24 bitplane image? 768 KB 1 MB 1.5 MB 2 MB
answered
Apr 6, 2018
in
Computer Graphics
by
Amit.kumar
(
453
points)

2.8k
views
nongate
graphics
isro2014
+5
votes
7
answers
30
ISRO20117
Which of the following is true about zbuffer algorithm? It is a depth sort algorithm No limitation on total number of objects Comparisons of objects is done zbuffer is initialized to background colour at start of algorithm
answered
Mar 31, 2018
in
Computer Graphics
by
Utsav09
Active
(
1.2k
points)

2.5k
views
isro2011
nongate
graphics
0
votes
0
answers
31
Graphics
I have a confusion that how the Gpu internal memory different from primary memory in the sense when which of the memory is active. For example suppose i am doing GPU programming or playing a video game then primary memory plays a role or only GPU memory. Suppose I increased my RAM without touching GPU will there be any improvement in my Gpu programming or my video games.
asked
Mar 15, 2018
in
Computer Graphics
by
Na462
Loyal
(
6.9k
points)

121
views
computergraphics
+1
vote
1
answer
32
UGCNETJan2017III14
A segment is any object described by GKS commands and data that start with CREATE SEGMENT and Terminates with CLOSE SEGMENT command. What functions can be performed on these segments ? (1) Translation and Rotation (2) Panning and Zooming (3) Scaling and Shearing (4) Translation, Rotation, Panning and Zooming
answered
Oct 28, 2017
in
Computer Graphics
by
Azeem
(
83
points)

209
views
+1
vote
1
answer
33
UGCNETAUG2016III17
In perspective projection (from 3D to 2D), objects behind the centre of projection are projected upside down and backward onto the viewplane. This is known as _____. Topological distortion Vanishing point View confusion Perspective foreshortening
answered
Oct 24, 2017
in
Computer Graphics
by
chahat bansal
(
125
points)

619
views
ugcnetaug2016iii
computergraphics
projection
+1
vote
1
answer
34
UGCNETSep2013III55
MPEG involves both spatial compression and temporal compression. The spatial compression is similar to JPEG and temporal compression removes _____ frames. Temporal Voice Spatial Redundant
answered
Oct 17, 2017
in
Computer Graphics
by
Simar sandhu
(
79
points)

1.1k
views
ugcnetsep2013iii
computergraphics
imageprocessing
imagecompression
+3
votes
1
answer
35
UGCNETAUG2016III14
Consider a $N$bit plane frame buffer with $W$bit wide lookup table with $W > N$. How many intensity levels are available at a time ? $2^{N}$ $2^{W}$ $2^{N+W}$ $2^{N1}$
answered
Oct 16, 2017
in
Computer Graphics
by
Simar sandhu
(
79
points)

689
views
ugcnetaug2016iii
computergraphics
framebuffer
+1
vote
1
answer
36
UGCNETAUG2016III13
Consider a raster grid having $XY$axes in positive $X$direction and positive upward $Y$direction with $X_{max} = 10$, $X_{min} = –5$, $Y_{max} = 11$, and $Y_{min} = 6$. What is the address of memory pixel with location $(5, 4)$ in raster grid assuming base address $1$ (one) ? $150$ $151$ $160$ $161$
answered
Oct 13, 2017
in
Computer Graphics
by
Minakshi Boruah
(
455
points)

2.3k
views
ugcnetaug2016iii
computergraphics
rastergraphics
+2
votes
1
answer
37
UGCNETDec2012III71
You are given four images to represent as $I_1 = \begin{bmatrix} 0 & 0 \\ 0 & 0 \end{bmatrix}, I_2 = \begin{bmatrix} 0 & 1 \\ 0 & 0 \end{bmatrix}$, $I_3 = \begin{bmatrix} 0 & 1 \\ 1 & 0 \end{bmatrix}, I_4 = \begin{bmatrix} 1 & 1 \\ 1 & 0 \end{bmatrix}$ The value of entropy is maximum for image $I_1$ $I_2$ $I_3$ $I_4$
answered
Jun 26, 2017
in
Computer Graphics
by
Debasmita Bhoumik
Active
(
3.8k
points)

1.1k
views
ugcnetdec2012iii
computergraphics
imageentropy
–1
vote
0
answers
38
matrix parallel projection totally confused # Computer Graphics
asked
Apr 19, 2017
in
Computer Graphics
by
LavTheRawkstar
Active
(
3.7k
points)

205
views
parallel
projection
+2
votes
3
answers
39
ISRO201448
A frame buffer array is addressed in row major order for a monitor with pixel locations starting from (0,0) and ending with (100,100). What is address of the pixel(6,10)? Assume one bit storage per pixel and starting pixel location is at 0. 1016 1006 610 616
answered
Apr 5, 2017
in
Computer Graphics
by
Regina Phalange
Loyal
(
9.6k
points)

2.8k
views
isro2014
nongate
graphics
+2
votes
2
answers
40
UGCNETDec2012III33
The Zbuffer algorithm is used for Hidden surface removal of objects. The maximum number of objects that can be handled by this algorithm shall depend on the application be arbitrary no. of objects depend on the memory availability depend on the processor
answered
Mar 10, 2017
in
Computer Graphics
by
sh!va
Boss
(
32.5k
points)

923
views
ugcnetdec2012iii
computergraphics
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