DIGITAL IMAGE PROCESSING EC2029 TECHNICAL QUIZ-1 M.VASUDEVAN A.P(ECE) PITS

1) Which one of the following is composed of digital image ?

a)Analog signal b)Discrete signalc)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)2Dc)3D d)2D&3D

5)On which of the following the spatial resolution depends?

a)size of pixels b)spatial resolution c)gray level d)numbers of pixels

6)What is the shape of the 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)12mmc)22mm d)14mm

11)Which is the psychological concept of sensation associated with the amount of stimulus ?

a)contrast b)brightnessc) photopic vision d)scotopic vision

12)Which is the example of volume images ? a)2D b)3Dc)both a @ b d)none of these

13)Which is defined as the process of discretizing a continuous Function ?

a)quantization b)samplingc)discrete correlation d)continuous correlation

14)What is other name of impulse noise ?

a)bipolar impulse noise b)spike noisec)pepper noise d)unipolar noise

15)Which one of the following is also known as filtering ? a)region b)masking c)sequentiald)parallel

16)When all operation on all the pixel are performed simultaneously then it is called as ?

a)scaling b)parallelac)averaging d)complete

17)How is the image sharpening implemented ?

a)fine b)spatialc)level d)Values

18) How the gradient can be defined as a two-dimensional ?

a)magnitude b)column vectorc)masks d)none of these

19)which of the mean filters are used for noise reduction ?

a)arithmetic filters b)geometric filtersc)spatial filters d)harmonic filters

20)Which of the following transform is also known as real transform ?

a)walsh transform b)Fast walsh transformc)haar transform d)none of these

21)which filters is used for blurring in frequency domain ?

a)ideal b)butterworthc)lowpass d)Gaussian

22)What is the central portion of the retina?

a)light receptors b)conesc)cataracts d)fovea

23)Which one of the following is known as curve ?

a)sensing array b)digital arrayc)digital path d)none of these

24)Which one of the following is also known as bounder ?

a)outline b)borderc)pixels d)finite

25)Which one of the following is also referred as masks ?

a)filters b)kernels c)both a@ bd)none of above

26)What is other name of color models ?

a)color borders b)color spacec)color monitorsd)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)comparingb)outlining edgesc)convolutiond)impulse function

29)Which one of the following transform is also known as Haar transform?

a)poor energyb)very fastc)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 b) linear phenomenac) Machband 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 b)linear phenomena c)Brigthness d)Dithering

33)What is the other name of periodic noises ?

a)spatially dependent b)frequencyc)filtering 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 differencec)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)spatialb)noise reductionc)centerd)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 meanc)local variance d)global variance

42)What is the measure of contrast in neighbourhood Sxy ?

a)local mean b)global meanc)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 b)image enhancement c)blind image processing 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