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Recent questions and answers in Digital Image Processing

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Digital image processing, Fourier kernel
The 2D Fourier kernels k(x,y,u,v) = e^(-j2π(ux/M + vy/N)) is - a)Separable and antisymmetric b)Symmetric but not separable c)Separable and symmetric d)Antisymmetric and not separable

subhash112 asked in Digital Image Processing Nov 22

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1 vote

1 answer

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UGC NET CSE | December 2014 | Part 3 | Question: 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 $a = 0, b = 0, c = 0, d = 1$ ... $a=\frac{1}{4}, b=\frac{1}{4}, c=\frac{1}{4}, d=\frac{1}{4}$

Taniya Bal answered in Digital Image Processing Dec 5, 2018

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2 answers

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UGC NET CSE | June 2014 | Part 3 | Question: 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

Prasanjeet Ghosh answered in Digital Image Processing May 19, 2018

by Prasanjeet Ghosh

3.6k views

2 votes

1 answer

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UGC NET CSE | December 2015 | Part 3 | Question: 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 $\begin{pmatrix} 1-p & p \\ p & 1-p \end{pmatrix}$ ... : $1$ $-p \log(p)-(1-p) \log(1-p)$ $1+p \log(p)+(1-p) \log(1-p)$ $0$

Allwin answered in Digital Image Processing Apr 7, 2017

by Allwin

1.8k views

5 votes

3 answers

5

ISRO2015-65
Which of the following is not an image type used in $\text{MPEG}?$ $\text{A}$ frame $\text{B}$ frame $\text{D}$ frame $\text{P}$ frame

Regina Phalange answered in Digital Image Processing Apr 1, 2017

by Regina Phalange

4.2k views

7 votes

3 answers

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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

Arunav Khare answered in Digital Image Processing Nov 2, 2016

by Arunav Khare

8.3k views

2 votes

1 answer

7

UGC NET CSE | June 2016 | Part 3 | Question: 60
Which of the following is used for the boundary representation of an image object? Quad Tree Projections Run length coding Chain codes

Sanjay Sharma answered in Digital Image Processing Sep 7, 2016

by Sanjay Sharma

1.7k views

1 vote

1 answer

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UGC NET CSE | December 2015 | Part 3 | Question: 51
Blind image disconvolution is Combination of blur identification and image restoration Combination of segmentation and classification Combination of blur and non-blur image None of the above

Sanjay Sharma answered in Digital Image Processing Aug 11, 2016

by Sanjay Sharma

1.1k views

2 votes

2 answers

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UGC NET CSE | June 2012 | Part 3 | Question: 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

Krishnadulal Dalapat answered in Digital Image Processing Jul 7, 2016

by Krishnadulal Dalapat

1.8k views

1 vote

1 answer

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UGC NET CSE | June 2012 | Part 3 | Question: 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

shekhar chauhan answered in Digital Image Processing Jul 7, 2016

by shekhar chauhan

1.8k views

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Sanjay Sharma asked in Digital Image Processing Jun 30, 2016

by Sanjay Sharma

243 views

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12

spatial masks
closed

Sanjay Sharma asked in Digital Image Processing Jun 30, 2016

by Sanjay Sharma

220 views

0 votes

1 answer

13

in the standard ieee 754 single precision floating point representation there is 1 bit of sign 23 bit for fraction

Rajesh Pradhan answered in Digital Image Processing Jun 24, 2016

by Rajesh Pradhan

485 views

5 votes

1 answer

14

ISRO2015-63
Which of the following compression algorithms is used to generate a $\textsf{.png}$ file? $\text{LZ78}$ Deflate $\text{LZW}$ Huffman

Desert_Warrior answered in Digital Image Processing Jun 20, 2016

by Desert_Warrior

3.4k views

4 votes

1 answer

15

ISRO2014-7
What does a pixel mask mean? string containing only $1\text{'s}$ string containing only $0\text{'s}$ string containing two $0\text{'s}$ string containing $1\text{'s}$ and $0\text{’s}$

shekhar chauhan answered in Digital Image Processing Jun 10, 2016

by shekhar chauhan

6.4k views

0 votes

0 answers

16

IMAGE
closed

Sanjay Sharma asked in Digital Image Processing May 6, 2016

by Sanjay Sharma

201 views

0 votes

0 answers

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UGC NET CSE | December 2012 | Part 3 | Question: 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 $\frac{1}{4} F (\frac{m}{2}, \frac{n}{2})$ $\frac{1}{4} F (2m, 2n)$ $\frac{1}{4} F (m,n)$ $\frac{1}{4} F (\frac{m}{4}, \frac{n}{4})$

Sanjay Sharma asked in Digital Image Processing Apr 13, 2016

by Sanjay Sharma

1.3k views

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Recent questions and answers in Digital Image Processing