PARISUTHAM INSTITUTE OF TECHNOLOGY AND SCIENCE
Department of ECE
AY 2015-16
IV Year /VII Sem.
Technical Quiz-1
EC2029 DIGITAL IMAGE PROCESSING
1) Which one of the following is composed of digital image?
a)Analog signal
b)Discrete signal
c)Pixels
d)Digital grid
2) Which one the following belongs to light receptors ?
a)rods and cones
b)lens
c)ciliary bodies
d)fovea
3) what is the process of measuring the brightness information in the sampling?
a)continuous spatial location
b)Analog spatial location
c)discrete spatial location
d)none of these
4)How will be the projection of a 3D scene?
a)1D
b)2D
c)3D
d)2D&3D
5)On which of the following spatial resolution depends?
a)size of pixels
b)spatial resolution
c)gray level
d)numbers of pixels
6) What is the shape of human eye ?
a)symmetrical sphere
b)spherical
c)asymmetrical sphere
d)oval shaped
7)What is the Diameter and volume of eye?
a)24mm & 6.4cc
b)24mm & 6.5cc
c)24mm & 6.6cc
d)24mm &6.7cc
8)Which can control the amount of light entering by about a factor of 30?
a)pupil
b)retina
c)cornea
d)sclera
9)Which one of the following is transparent external surface of eye ?
a)sclera
b)cornea
c)retina
d)lens
10)what is the radius of sclera ?
a)11mm
b)12mm
c)22mm
d)14mm
11)Which is the psychological concept of sensation associated with the amount of stimulus ?
a)contrast
b)brightness
c) photopic vision
d)scotopic vision
12)Which one of the following is the example of volume images ?
a)2D
b)3D
c)both a @ b
d)none of these
13)Which is defined as the process of discretizing a continuous Function ?
a)quantization
b)sampling
c)discrete correlation
d)continuous correlation
14)What is other name of impulse noise ?
a)bipolar impulse noise
b)spike noise
c)pepper noise
d)unipolar noise
15)Which one of the following is also known as filtering ?
a)region
b)masking
c)sequential
d)parallel
16)When all operation on all the pixel are performed simultaneously then it is called as ?
a)scaling
b)parallel
c)averaging
d)complete
17)How is the image sharpening implemented ?
a)fine
b)spatial
c)level
d)Values
18) How the gradient can be defined as a two-dimensional ?
a)magnitude
c)masks
b)column vector
d)none of these
19)which of the mean filters are used for noise reduction ?
a)arithmetic filters
b)geometric filters
c)spatial filters
d)harmonic filters
20)Which on the following transform is also known as real transform ?
a)walsh transform
b)Fast walsh transform
c)haar transform
d)none of these
21)which filters is used for blurring in frequency domain ?
a)ideal
b)butterworth
c)lowpass
d)Gaussian
22)What is the central portion of the retina?
a)light receptors
b)cones
c)cataracts
d)fovea
23)Which one of the following is known as curve ?
a)sensing array
c)digital path
b)digital array
d)none of these
24)Which one of the following is also known as bounder ?
a)outline
b)border
c)pixels
d)finite
25)Which one of the following is also referred as masks ?
a)filters
b)kernels
c)both a@ b
d)none of above
26)What is other name of color models ?
a)color borders
b)color space
c)color monitors
d)none of these
27)Which one of the following are primary colours?
a) Black & White
b) CMY
c)RGB
d) none of these
28)For what the laplacian operators are used in an image ?
a)comparing
c)convolution
b)outlining edges
d)impulse function
29) Which on the following transform is also known as Haar transform?
a)poor energy
b)very fast transform
c)basis vector
d)vectors
30) Which one of the following defined as the smallest number of discernible detail in an
image?
a)sequence
b)basis vectors
c)Resolution
d)matrix
31) Which of the following represents the human visual overshoot and undershoot
phenomena?
a)Blind Spot
c) Machbands phenomena
b) linear phenomena
d)None of these
32)Which of the following concept says that the process by which we create illusions of the
color that are not present actually?
a)Machbands phenomena
c)Brigthness
b)linear phenomena
d)Dithering
33)What is the other name of periodic noises ?
a)spatially dependent
c)filtering
b)frequency
d)domain
34) Which is known as the process of reducing sharp transitions in the gray level of an
image?
a)noise models
b)smoothing
c)contrast stretching
d)blurring
35)How the gradient is defined as 2D ?
a)row vector
b)cross difference
c)column vector
d)difference vector
36)Which on the following is produced by First order derivatives ?
a)thick edges
b)thin edges
c)ramp signal
d)none of these
37) What is the process of highlighting certain features of an image ?
a)image restoration
b) image enhancement process
c)image sensing
d)mask processing
38)What is the main application of non-linear filtering ?
a)spatial
b)noise reduction
c)center
d)none of these
39)What is the other name of picture element?
a)pixel
b)voxel
c)blur
d)dither
40)Which of the following is based on first order derivatives?
a)laplacian operator
b)gradient operator
c)digital differentiation
d)spatial differentiation
41)What is the measure of average gray level in an image ?
a)local mean
b)global mean
c)local variance
d)global variance
42)What is the measure of contrast in neighbourhood Sxy ?
a)local mean
b)global mean
c)local variance
d)global variance
43)Which method is used for spreading or compressing the gray levels in an image ?
a)power law transformations
b)log transformations
c)inverse log transformation
d)antilog transformations
44)What is the opposite function of log transformation ?
a)power law transformations
b)log transformations
c)inverse log transformation
d)antilog transformations
45)What is the method of removal of small details from an image before object
extraction ?
a)blurring
b)noise reduction
c)smoothing
d)bordering
46)What is the process of reducing sharp trasitions in the gray Level of an image ?
a)blurring
b)noise reduction
c)smoothing
d)bordering
47)which one of following is spatial averaging filter in that all the co efficient are equal ?
a)spatial averaging
b)box filter
c)white noise
d)image sharpening
48)What is defined as the process of restoring an image by using unknown
degradation function ?
a)image restoration
c)blind image processing
b)image enhancement
d)blind image restoration
49) In which area of the human has no presence of light receptors ?
a)Choroid
b)diaphargm
c)blind spot
d)iris
50)Which is the storage for infrequent access ?
a)short term
b)frame buffers
c)on-line
d)archival