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Recent questions and answers in Digital Image Processing

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Recent questions and answers in Digital Image Processing

1 vote
1 answer
1
UGCNET-Dec2014-III: 65
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 $a = 0, b = 0, c = 0, d = 1$ $a=\frac{1}{2}, b=\frac{1}{2}, c=0, d=0$ ... $a=\frac{1}{4}, b=\frac{1}{4}, c=\frac{1}{4}, d=\frac{1}{4}$
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 $a = 0, b = 0, c = 0, d = 1$ $a=\frac{1}{2}, b=\frac{1}{2}, c=0, d=0$ $a=\frac{1}{3}, b=\frac{1}{3}, c=\frac{1}{3}, d=0$ $a=\frac{1}{4}, b=\frac{1}{4}, c=\frac{1}{4}, d=\frac{1}{4}$
answered Dec 5, 2018 in Digital Image Processing Taniya Bal 1.2k views
0 votes
2 answers
2
UGCNET-June2014-III: 55
Given an image of size $1024 \times 1024$ pixels in which intensity of each pixel is an $8$-bit quality. It requires _______ of storage space if the image is not compressed. One Terabyte One Megabyte $8$ Megabytes $8$ Terabytes
Given an image of size $1024 \times 1024$ pixels in which intensity of each pixel is an $8$-bit quality. It requires _______ of storage space if the image is not compressed. One Terabyte One Megabyte $8$ Megabytes $8$ Terabytes
answered May 19, 2018 in Digital Image Processing Prasanjeet Ghosh 1.9k views
2 votes
1 answer
3
UGCNET-Dec2015-III: 49
Consider the conditional entropy and mutual information for the binary symmetric channel. The input source has alphabet $X=\{0,1\}$ and associated probabilities ${\dfrac{1}{2}, \dfrac{1}{2}}$. The channel matrix is $\begin{pmatrix} 1-p & p \\ p & 1-p \end{pmatrix}$ wgere p is the ... given by: $1$ $-p \log(p)-(1-p) \log(1-p)$ $1+p \log(p)+(1-p) \log(1-p)$ $0$
Consider the conditional entropy and mutual information for the binary symmetric channel. The input source has alphabet $X=\{0,1\}$ and associated probabilities ${\dfrac{1}{2}, \dfrac{1}{2}}$. The channel matrix is $\begin{pmatrix} 1-p & p \\ p & 1-p \end{pmatrix}$ wgere p is the transition probability. Then ... is given by: $1$ $-p \log(p)-(1-p) \log(1-p)$ $1+p \log(p)+(1-p) \log(1-p)$ $0$
answered Apr 7, 2017 in Digital Image Processing Allwin 1.3k views
4 votes
3 answers
4
ISRO2015-65
Which of the following is not an image type used in MPEG? A frame B frame D frame P frame
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 Regina Phalange 3.1k views
7 votes
3 answers
5
ISRO-2013-10
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
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 Arunav Khare 6.2k views
2 votes
1 answer
6
UGCNET-June2016-III: 60
Which of the following is used for the boundary representation of an image object? Quad Tree Projections Run length coding Chain codes
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 Sanjay Sharma 1.3k views
2 votes
1 answer
7
UGCNET-June2012-III: 10
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
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 Krishnadulal Dalapat 797 views
1 vote
1 answer
8
UGCNET-June2012-III: 19
The quantiser in an image-compression 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
The quantiser in an image-compression 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 shekhar chauhan 1.1k views
0 votes
0 answers
9
image enotropy
asked Jun 30, 2016 in Digital Image Processing Sanjay Sharma 154 views
0 votes
0 answers
10
spatial masks
 [closed]
asked Jun 30, 2016 in Digital Image Processing Sanjay Sharma 156 views
4 votes
1 answer
12
ISRO2015-63
Which of the following compression algorithms is used to generate a .png file? LZ78 Deflate LZW Huffman
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 Desert_Warrior 3k views
3 votes
1 answer
13
ISRO2014-7
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
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 shekhar chauhan 4.9k views
0 votes
0 answers
14
IMAGE
 [closed]
asked May 6, 2016 in Digital Image Processing Sanjay Sharma 118 views
0 votes
0 answers
15
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
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 Sanjay Sharma 339 views
0 votes
1 answer
16
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
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 in Digital Image Processing Arjun 2.7k views
0 votes
0 answers
17
UGCNET-Dec2012-III: 64
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 $\frac{1}{4} F (\frac{m}{2}, \frac{n}{2})$ $\frac{1}{4} F (2m, 2n)$ $\frac{1}{4} F (m,n)$ $\frac{1}{4} F (\frac{m}{4}, \frac{n}{4})$
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 Sanjay Sharma 973 views
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