Question 51 : Which of the following is not among the type of architectures used for DSP processors

- Von Neumann
- Harvard
- SISD
- Modified Harvard

Question 52 : What is the expanded form of JPEG?

- Joint Photographic Expansion Group
- Joint Photographic Experts Group
- Joint Photographs Expansion Group
- Joint Photographic Expanded Group

Question 53 : A majority of DSP processor are of what type

- CISC
- RISC
- SISD
- SIMD

Question 54 : The N-point DFT of a L-point sequence will have a periodicity of ____ samples

- N
- L
- N(N-1)
- N * N

Question 55 : Auto correlation of x(n) = [ 4, 3, 2, 1 ] and its value at lag=0 are

- [4, 11, 12, 30, 20, 12,4] and 30
- [4, 11, 20, 30, 20, 12,4] and 30
- [3, 11, 20, 30, 20, 12,3] and 20
- [4, 11, 20, -30, 20, 12,4] and 11

Question 56 : A random signal is the one

- which is discrete in time
- which is discrete in value
- which varies with respect to only single variable
- which can not be represented using an equation or a set of rules

Question 57 : The total energy of a discrete time signal is

- zero
- negative
- infinite
- finite

Question 58 : For structuring elements, its origins is at

- top left
- top right
- Center
- bottom left

Question 59 : In overlap save method the number of first samples that we discard are

- N
- N-1
- N-2
- N-3

Question 60 : 4- point DFT requires a total of

- 12 multiplications and 10 additions
- 10 multiplications and 8 additions
- 16 multiplications and 12 additions
- 14 multiplications and 12 additions

Question 61 : Point, line, edge detectors are based on ____ of an image

- Similarity
- equality
- discontinuities
- nature

Question 62 : Hough transform is used for finding

- Finding points in image
- Finding lines in image
- Finding objects in image
- Finding moments of an image

Question 63 : Histogram processing looses _____ of the pixels of an image.

- information
- intensity
- position
- content

Question 64 : Which block of the discrete time systems requires memory in order to store the previous input?

- Adder
- Signal Multiplier
- Unit Delay
- Unit Advance

Question 65 : What does Lossy Compression do to files?

- Increases the file size and keeps the same quality
- Eliminates no information at all
- Decreases the file size and keeps the same quality
- Eliminates unnecessary information in a file to reduce file size

Question 66 : Which is true about bit plane slicing?

- Highest order plane contains most of the information of an image
- Lowest order plane contains most of the information of an image
- Mid order plane contains most of the information of an image
- All plane contains equal information of an image

Question 67 : Refresh rate is measured in

- mbps
- hertz
- kilo hertz
- mega hertz

Question 68 : A system is said to be shift invariant only if_

- a shift in the input signal also results in the corresponding shift in the output
- a shift in the input signal does not exhibit the corresponding shift in the output
- a shifting level does not vary in an input as well as output
- a shifting at input does not affect the output

Question 69 : The quality of output signal from a A/D converter is measured in terms of:

- Quantization error
- Quantization to signal noise ratio
- Signal to quantization noise ratio
- Conversion constant

Question 70 : FFT may be used to calculate

- DFT
- Laplace transform
- Direct Z transform
- In direct Z transform

Question 71 : In normalized histogram sum of all the values is equal to

- 2
- 1
- 0
- -1

Question 72 : If the output of the system of the system at any 'n' depends only the present or the past values of the inputs then the system is said to be:

- Linear
- Non-Linear
- Causal
- Non-causal

Question 73 : Smoothening filter is used to

- Remove low frequency regions from an image
- Remove high frequency regions from an image
- Enhance high frequency regions in an image
- Improve the contrast of an image

Question 74 : Laplacian operator is rotation invariant because

- it is two dmensional in nature
- it is one Dimentional in nature
- it rotates very fast with respect to the centre pixel
- Rotating the image and then applying the operator or roatating the operator and then applying on the image has the same effect

Question 75 : DFT is applied to

- Infinite sequences
- Finite discrete sequences
- Continuous infinite signals
- Continuous finite sequences

Question 76 : Compute linear convolution of sequence x(n) = {1, 3, 2, 4, 4, 2, 3, 1} and h(n)={1, â1, 1} using overlap save method.

- y(n) = {1,0, 0, 5, 2, 2, 5, 0, 2, 1}
- y(n) = {1, 5, 0, 5, 2, 2, 5, 0, 2, 1}
- y(n) = {1, 2, 0, 5, 2, 2, 5, 0, 2, 1}
- y(n) = {1, 1, 0, 5, 2, 2, 5, 0, 2, 1}

Question 77 : Thresholding is a special case of contrast stretching which generates

- High contrast image
- Binary image
- Low contrast image
- Dark image

Question 78 : Which of the following is true regarding the number of computations required to compute an N-point DFT?

- N2 complex multiplications and N(N-1) complex additions
- N2 complex additions and N(N-1) complex multiplications
- N2 complex multiplications and N(N+1) complex additions
- N2 complex additions and N(N+1) complex multiplications

Question 79 : Spatial domain refers to

- Image plane itself and image processing methods are applied directly to one to one image pixels only
- Image plane itself and image processing methods that are not applied directly to image pixels.
- Image plane itself and image processing methods are applied directly to neighbouring pixels only.
- Image plane itself and image processing methods that are applied directly to both one to one image pixels and neighbouring pixels.

Question 80 : What will be the linear convolution of the sequences x(n)={1,2} and h(n)={2,1} using DFT.

- {2, 2, 5}
- {5, 2, 5}
- {2, 5, 2}
- {5, 5, 2}

Question 81 : DTFT is the representation of

- Periodic Discrete time signals
- Aperiodic Discrete time signals
- Aperiodic continuous signals
- Periodic continuous signals

Question 82 : Logarithmic Transformation is

- Used to expand the values of dark pixels in an image while compressing the higher-level values.
- Used to compress the values of dark pixels in an image while expanding the higher-level values
- Used to compress the dynamic range of images with small variations in pixel values.
- Used to expand the dynamic range of image with large variations in pixel values

Question 83 : What is the basic difference between general purpose and DSP processor

- More costly
- Complex design
- Processes in real time
- Less reliable

Question 84 : DTFT is the representation of

- Periodic Discrete time signals
- Aperiodic Discrete time signals
- Aperiodic continuous signals
- Periodic continuous signals

Question 85 : The procedure done on a digital image to alter the values of its individual pixels is

- Neighborhood Operations
- Image Registration
- Geometric Spatial Transformation
- Single Pixel Operation

Question 86 : Which of the following techniques of boundary descriptions have the physical interpretation of boundary shape?

- Fourier transform
- Statistical moments
- Laplace transform
- Curvature

Question 87 : The applications which use overlap add method are except

- Digital audio
- Telephone signals
- Echo cancellation
- Image signals

Question 88 : An intensity levels of image can be viewed in the range of [0, L-1] is known as

- Truth Table
- Transformation function
- Histogram
- Intensity level transformation

Question 89 : The following are speech coding techniques except

- Huffman Coding
- Pulse Code Modulation
- Linear Predictive Coding
- Transform Coding

Question 90 : Calculate the minimum sampling rate to avoid aliasing when a continuous time signal is given by x(t) = 5 cos 200Ďt

- 100 Hz
- 200 Hz
- 250 Hz
- 400 Hz

Question 91 : In terms of image enhancement, what does mean and variance refers to?

- Average contrast and average gray level respectively
- Average gray level and average contrast respectively
- Average gray level in both
- Average contrast in both

Question 92 : Fourier transform of unit impulse at origin is

- Undefined
- Infinity
- 1
- 0

Question 93 : Which of the following step deals with tools for extracting image components those are useful in the representation and description of shape?

- Segmentation
- Representation & description
- Compression
- Morphological processing

Question 94 : Histogram equalization is used to

- Enhance the contrast of an image
- Remove the noises present in an image
- Find the contours present in an image
- Find the equality present in various regions.

Question 95 : If âFâ is the frequency of the analog signal, then what is the minimum sampling rate required to avoid aliasing?

- F
- 2F
- 3F
- 4F

Question 96 : Condition for splitting an image is

- Difference of any two pixel values should be less than threshold values
- Difference of any two pixel values should be greater than equal to threshold values
- Difference of maximum pixel value and minimum pixel value should be less than threshold values
- Difference of maximum pixel value and minimum pixel value should be greater than threshold values

Question 97 : JPEG format is useful when ___________

- There are so many colors in the picture
- There are not so many colors in the picture
- To show more brightness
- To show haziness

Question 98 : If we perform Opening on images then it smooths the image's

- Pixels
- Lines
- Contour
- Boundary

Question 99 : The technique of Enhancement that has a specified Histogram processed image as result, is called?

- Histogram Linearization
- Histogram Equalization
- Histogram Matching
- Histogram Linear Processing

Question 100 : In which case power law of transformation is used

- purification
- industry
- radar
- MRI