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Recent questions and answers in Computer Graphics
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1
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
(
7
points)

72
views
+2
votes
1
answer
2
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
Nov 9, 2018
in
Computer Graphics
by
Mohana_bakshi
(
35
points)

799
views
ugcnetjuly2018ii
computergraphics
2dgeometry
+1
vote
2
answers
3
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
(
319
points)

1.3k
views
ugcnetjuly2018ii
computergraphics
displaysystem
+3
votes
3
answers
4
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
Oct 13, 2018
in
Computer Graphics
by
shruti gupta1
(
417
points)

3.1k
views
ugcnetjune2016iii
computergraphics
rotation
+1
vote
2
answers
5
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 6, 2018
in
Computer Graphics
by
Mayank Malik
(
27
points)

807
views
ugcnetjune2016iii
computergraphics
+1
vote
1
answer
6
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
(
27
points)

156
views
+1
vote
2
answers
7
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)

235
views
0
votes
1
answer
8
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
(
829
points)

405
views
ugcnetjuly2018ii
computergraphics
3dgraphics
0
votes
1
answer
9
UGC NET July 2018 Q 9
answered
Jul 11, 2018
in
Computer Graphics
by
Gaurav Parashar
(
187
points)

128
views
+1
vote
1
answer
10
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
Jun 28, 2018
in
Computer Graphics
by
Rajandeep Gill
(
55
points)

158
views
+1
vote
2
answers
11
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)

727
views
ugcnetaug2016iii
computergraphics
linedrawingalgorithm
+1
vote
1
answer
12
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
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1.8k
points)

203
views
ugcnetnov2017iii
computergraphics
digitalimageprocessing
+1
vote
2
answers
13
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
(
1.8k
points)

307
views
ugcnetnov2017iii
computergraphics
crt
+1
vote
1
answer
14
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
(
1.8k
points)

236
views
ugcnetnov2017iii
computergraphics
projection
+1
vote
1
answer
15
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
(
1.8k
points)

367
views
ugcnetnov2017iii
computergraphics
0
votes
3
answers
16
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
(
1.8k
points)

873
views
ugcnetjune2014iii
nongate
graphics
computergraphics
0
votes
2
answers
17
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
(
1.8k
points)

545
views
ugcnetjune2014iii
nongate
computergraphics
+1
vote
2
answers
18
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
(
1.8k
points)

785
views
ugcnetjune2014iii
nongate
graphics
+4
votes
3
answers
19
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
(
455
points)

2.7k
views
nongate
graphics
isro2014
+5
votes
7
answers
20
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
(
1.3k
points)

2.4k
views
isro2011
nongate
graphics
0
votes
0
answers
21
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
(
8.7k
points)

99
views
computergraphics
+1
vote
1
answer
22
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
(
71
points)

192
views
+1
vote
1
answer
23
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
(
105
points)

519
views
ugcnetaug2016iii
computergraphics
projection
+1
vote
1
answer
24
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
(
101
points)

937
views
ugcnetsep2013iii
computergraphics
imageprocessing
imagecompression
+2
votes
1
answer
25
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
(
101
points)

574
views
ugcnetaug2016iii
computergraphics
framebuffer
+1
vote
1
answer
26
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
(
425
points)

1.9k
views
ugcnetaug2016iii
computergraphics
rastergraphics
+1
vote
0
answers
27
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
asked
Oct 9, 2017
in
Computer Graphics
by
amaity
Active
(
3.5k
points)

135
views
+2
votes
1
answer
28
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
(
3.9k
points)

939
views
ugcnetdec2012iii
computergraphics
imageentropy
+1
vote
1
answer
29
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
May 30, 2017
in
Computer Graphics
by
Allwin
(
75
points)

642
views
ugcnetdec2014iii
nongate
graphics
lineclipping
–1
vote
0
answers
30
matrix parallel projection totally confused # Computer Graphics
asked
Apr 19, 2017
in
Computer Graphics
by
LavTheRawkstar
Active
(
5.2k
points)

193
views
parallel
projection
+1
vote
3
answers
31
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
(
9.3k
points)

2.6k
views
isro2014
nongate
graphics
+2
votes
2
answers
32
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
(
35.3k
points)

747
views
ugcnetdec2012iii
computergraphics
+1
vote
1
answer
33
UGCNETJune2016III18
Which of the following statements is/are correct with reference to curve generation? Hermite curves are generated using the concepts of interpolation Bezier curves are generated using the concepts of approximation The Bezier curve lies entirely within the convex hull of its control ... of control points I, II and IV only II and III only I and II only I, II and III only
answered
Feb 5, 2017
in
Computer Graphics
by
sanjeela.sagar
(
187
points)

733
views
ugcnetjune2016iii
computergraphics
0
votes
2
answers
34
Aspect ratio and resolution
Given that a 22inch monitor with an aspect ratio of 16:9 has a monitor resolution of 1920X1080,what is the width of the monitor ? a)19.17 inches b)22 inches c)8.53 inches d)10.79 inches
answered
Jan 10, 2017
in
Computer Graphics
by
bhoop1104
(
35
points)

1.6k
views
0
votes
1
answer
35
The process of producing bitmapped images from a 3D model
answered
Jan 2, 2017
in
Computer Graphics
by
Devshree Dubey
Boss
(
14k
points)

146
views
+1
vote
0
answers
36
hilbert curve
asked
Jan 2, 2017
in
Computer Graphics
by
Meenakshi Sharma
Active
(
3.1k
points)

64
views
+3
votes
1
answer
37
UGCNETDec2012III16
The Mandelbrot set used for the construction of beautiful images is based on the following transformation. $x_{n+1}=x^2_n +z$. Here, Both $x$ and $z$ are real numbers Both $x$ and $z$ are complex numbers $x$ is real and $z$ is complex $x$ is complex and $z$ is real
answered
Dec 29, 2016
in
Computer Graphics
by
Sanjay Sharma
Veteran
(
50.7k
points)

628
views
ugcnetdec2012iii
computergraphics
transformation
+3
votes
1
answer
38
UGCNETDec2013III66
What steps shall be required to rotate an object from point $P_1$ (as shown in fig. 1) and its placement such that what was at $P_1$ is now reduced and is at $P_2$ (as shown in fig. 2)? Translate $P_1$ to origin Scale as required Rotate Translate to the final position $P_2$ I, II and III II, III and IV I, III and IV All of the above
answered
Dec 23, 2016
in
Computer Graphics
by
Deepthi_ts
Active
(
3.4k
points)

685
views
ugcnetdec2013iii
graphics
nongate
+2
votes
1
answer
39
UGCNETDec2013III65
The transformation required for conversion of CMY colour model to RGB colour model is given as: $\begin{bmatrix} R \\ G \\ B \end{bmatrix} = \begin{bmatrix} C \\ M \\ Y \end{bmatrix}  \begin{bmatrix} 1 \\ 2 \\ 3 \end{bmatrix}$ ...
answered
Dec 23, 2016
in
Computer Graphics
by
Deepthi_ts
Active
(
3.4k
points)

533
views
ugcnetdec2013iii
graphics
nongate
–2
votes
0
answers
40
The reflection along the line y=x is equivalent to reflection along the Xaxis followed by counter clockwise rotation
asked
Nov 30, 2016
in
Computer Graphics
by
rahuldb
Junior
(
677
points)

1.2k
views
nongate
graphics
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