Recent questions and answers in Digital Image Processing - GATE Overflow

+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 $a = 0, b = 0, c = 0, d = 1$ $a=\frac{1}{2}, b=\frac{1}{2}, c=0, d=0$ ... $a=\frac{1}{4}, b=\frac{1}{4}, c=\frac{1}{4}, d=\frac{1}{4}$

answered Dec 5, 2018 in Digital Image Processing by Taniya Bal | 1.1k 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

answered May 19, 2018 in Digital Image Processing by Prasanjeet Ghosh | 1.4k 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: $1$ $-p \log(p)-(1-p) \log(1-p)$ $1+p \log(p)+(1-p) \log(1-p)$ $0$

answered Apr 7, 2017 in Digital Image Processing by Allwin | 1.1k 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

answered Apr 2, 2017 in Digital Image Processing by Regina Phalange | 2.7k 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

answered Nov 2, 2016 in Digital Image Processing by Arunav Khare | 5.5k 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

answered Sep 8, 2016 in Digital Image Processing by Sanjay Sharma | 1.2k 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

answered Jul 7, 2016 in Digital Image Processing by Krishnadulal Dalapat | 633 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

answered Jul 7, 2016 in Digital Image Processing by shekhar chauhan | 765 views

0 votes

0 answers

9

asked Jun 30, 2016 in Digital Image Processing by Sanjay Sharma | 128 views

0 votes

0 answers

10

spatial masks
[closed]

asked Jun 30, 2016 in Digital Image Processing by Sanjay Sharma | 128 views

0 votes

1 answer

11

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 | 308 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

answered Jun 20, 2016 in Digital Image Processing by Desert_Warrior | 2.7k 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

answered Jun 10, 2016 in Digital Image Processing by shekhar chauhan | 4.4k views

0 votes

0 answers

14

IMAGE
[closed]

asked May 6, 2016 in Digital Image Processing by Sanjay Sharma | 101 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

asked May 6, 2016 in Digital Image Processing by Sanjay Sharma | 280 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

answered Apr 29, 2016 in Digital Image Processing by Arjun | 2.1k 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 $\frac{1}{4} F (\frac{m}{2}, \frac{n}{2})$ $\frac{1}{4} F (2m, 2n)$ $\frac{1}{4} F (m,n)$ $\frac{1}{4} F (\frac{m}{4}, \frac{n}{4})$

asked Apr 13, 2016 in Digital Image Processing by Sanjay Sharma | 773 views

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