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Recent questions and answers in Digital Image Processing
+2
votes
1
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1
UGCNETDec2015III49
Consider the conditional entropy and mutual information for the binary symmetric channel. The input source has alphabet $X=\{0,1\}$ and associated probabilities ${\frac{1}{2}, \frac{1}{2}}$. The channel matrix is $\begin{pmatrix} 1p & p \\ p & 1p \end{pmatrix ... probability. Then the conditional entropy is given by: 1 plog(p)(1p)log(1p) 1+plog(p)+(1p)log(1p) 0
answered
Apr 7, 2017
in
Digital Image Processing
by
Allwin
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67
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542
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ugcnetdec2015iii
digitalimageprocessing
entropy
+4
votes
3
answers
2
ISRO201565
Which of the following is not an image type used in MPEG? A frame B frame D frame P frame
answered
Apr 1, 2017
in
Digital Image Processing
by
Regina Phalange
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8k
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isro2015
imageprocessing
nongate
+6
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3
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3
ISRO201310
If the frame buffer has 8 bits per pixel and 8 bits are allocated for each of the $R, G, B$ components, what would be the size of the lookup table? $24$ bytes $1024$ bytes $768$ bytes $256$ bytes
answered
Nov 2, 2016
in
Digital Image Processing
by
Arunav Khare
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4.5k
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3.7k
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isro2013
imageprocessing
+2
votes
1
answer
4
UGCNETJune2016III60
Which of the following is used for the boundary representation of an image object? Quad Tree Projections Run length coding Chain codes
answered
Sep 7, 2016
in
Digital Image Processing
by
Sanjay Sharma
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(
47.6k
points)

596
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ugcnetjune2016iii
imagecompression
+1
vote
0
answers
5
UGCNETDec2014III65
Given a simple image of size $10 \times 10$ whose histogram models the symbol probabilities and is given by $P_{1}$ $P_{2}$ $P_{3}$ $P_{4}$ a b c d The first order estimate of image entropy is maximum when $a = 0, b = 0, c = 0, d = 1$ $a=\frac{1}{2}, b=\frac{1}{2}, c=0, d=0$ $a ... b=\frac{1}{3}, c=\frac{1}{3}, d=0$ $a=\frac{1}{4}, b=\frac{1}{4}, c=\frac{1}{4}, d=\frac{1}{4}$
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Aug 2, 2016
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Digital Image Processing
by
makhdoom ghaya
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39.8k
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465
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ugcnetdec2014iii
imageprocessing
entropy
+2
votes
1
answer
6
UGCNETJune2012III10
In an image compression system 16384 bits are used to represent 256 $\times$ 256 image with 256 gray levels. What is the compression ratio for this system? 1 2 4 8
answered
Jul 7, 2016
in
Digital Image Processing
by
Krishnadulal Dalapat
(
243
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305
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ugcnetjune2012iii
imagecompression
+1
vote
1
answer
7
UGCNETJune2012III19
The quantiser in an imagecompression system is a lossy element which exploits the psychovisual redundancy lossless element which exploits the psychovisual redundancy lossy element which exploits the statistical redundancy lossless element which exploits the statistical redundancy
answered
Jul 7, 2016
in
Digital Image Processing
by
shekhar chauhan
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45k
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303
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ugcnetjune2012iii
imagecompression
0
votes
0
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8
image enotropy
asked
Jun 30, 2016
in
Digital Image Processing
by
Sanjay Sharma
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47.6k
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85
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imageprocessing
0
votes
0
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9
spatial masks
[closed]
asked
Jun 30, 2016
in
Digital Image Processing
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Sanjay Sharma
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47.6k
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90
views
0
votes
1
answer
10
in the standard ieee 754 single precision floating point representation there is 1 bit of sign 23 bit for fraction
answered
Jun 24, 2016
in
Digital Image Processing
by
Rajesh Pradhan
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22.5k
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236
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+4
votes
1
answer
11
ISRO201563
Which of the following compression algorithms is used to generate a .png file? LZ78 Deflate LZW Huffman
answered
Jun 20, 2016
in
Digital Image Processing
by
Desert_Warrior
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8.6k
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2.2k
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isro2015
imageprocessing
imagecompression
nongate
+3
votes
1
answer
12
ISRO20147
What does a pixel mask mean? string containing only 1's string containing only 0's string containing two 0's string containing 1's and 0’s
answered
Jun 10, 2016
in
Digital Image Processing
by
shekhar chauhan
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45k
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3.2k
views
nongate
imageprocessing
isro2014
0
votes
0
answers
13
IMAGE
[closed]
asked
May 6, 2016
in
Digital Image Processing
by
Sanjay Sharma
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47.6k
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73
views
imageprocessing
nongate
0
votes
0
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14
ugc net12
14. If the pixels of an image are shuffled then the parameter that may change is (A) Histogram (B) Mean (C) Entropy (D) Covariance
asked
May 6, 2016
in
Digital Image Processing
by
Sanjay Sharma
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47.6k
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168
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imageprocessing
0
votes
1
answer
15
ugc net june12
In an image compression system 16384 bits are used to represent 256 × 256 image with 256 gray levels. What is the compression ratio for this system ? (A) 1 (B) 2 (C) 4 (D) 8
answered
Apr 28, 2016
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Digital Image Processing
by
Arjun
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340k
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881
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imagecompression
imageprocessing
0
votes
0
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16
UGCNETDec2012III64
If the Fourier transform of the function f(x,y) is F(m,n), then the Fourier transform of the function f(2x,2y) is $\frac{1}{4} F (\frac{m}{2}, \frac{n}{2})$ $\frac{1}{4} F (2m, 2n)$ $\frac{1}{4} F (m,n)$ $\frac{1}{4} F (\frac{m}{4}, \frac{n}{4})$
asked
Apr 13, 2016
in
Digital Image Processing
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Sanjay Sharma
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47.6k
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322
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ugcnetdec2012iii
fouriertransform
imageprocessing
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