Digital Image Processing Multiple choice Questions unit wise – 10EC763 UNIT - 1 1.the amount of luminous flux falling on a given area of surface is called as ____________ (a)aperture (b)contrast (c)brightness (d)i luminance 2.digitization of spatial co-ordinates (x,y)is called (a)gray level uantization (b)finite sampling (c)image sampling (d)image uantization !.a 12"x12" image #ith $% gray levels reuires ________bits of storage (a)%&'$ (b)"1'2 (c)122"" (d)98304 %.a good image is difficulty to define because image uality (a)high subective ,#ealy dependent (b)lo#ly subective, #ealy dependent (c)high subjective st!"ngl# dependent (d)lo#ly subective, strongly dependent *.for coordinates p($3)the % neighbors of pixel p are (a)(!,!)(2,!)(1,!)(1,!) (b)(!,!)(2,!)(1,1)(2,2) (c)(33)($4)(13)($$) (d)(!,!)(2,%)(1,!)(2,1) $.d distance is also called as (a)cit# bl"c% distance (b)chess board distance (c)euclidean distance (d)mean distance +.image transforms are needed for (a)c"nve!si"n in&"!mati"n &"!m spatial t" &!e'uenc# (b)spatial domain (c)time domain (d)both bc ".image restoration is used to improve the ________image (a)uantity
(b)'ualit# (c)blur (d)none
'.the #alsh and hadamard transforms are ___________in nature (a)sinusoidal (b)cosine (c)n"n-sinus"idal (d)cosine and sine 1&.unsampling is a process of ____________the spatial resolution of the image (a)decreasing (b)inc!easing (c)averaging (d)doubling 11. n image processing techniue the input and output are a) lo# uality image and improved uality image b) description and image c) image and description d) lo# uality image and imagedescription
/. 0. .
12. Which is frst undamental step in image processing filtration image ac'uisiti"n image enhancement image restoration
UNIT * $ 1. / continuous image is digitised at _______ points. a) random b) vertex c) contour d) sampling 2. he transition bet#een continuous values of the image function and its digital euivalent is called ______________ a) +uantisati"n b) 3ampling c) 4asterisation d) 5one of the 6entioned !. mages uantised #ith insufficient brightness levels #ill lead to the occurrence of ____________ a) 7ixillation
b) 8lurring c) ,alse "nt"u!s d) 5one of the 6entioned %. he smallest discernible change in intensity level is called ____________ a) Intensit# .es"luti"n b) 0ontour c) 3aturation d) 0ontrast *. 9hat is the tool used in tass such as zooming, shrining, rotating, etc.: a) 3ampling b) Inte!p"lati"n c) ;ilters d) 5one of the 6entioned $. he type of nterpolation #here for each ne# location the intensity of the immediate pixel is assigned is ___________ a) bicubic interpolation b) cubic interpolation c) bilinear interpolation d) nea!est neighb"u! inte!p"lati"n +. he type of nterpolation #here the intensity of the ;<=4 neighbouring pixels is used to obtain intensity a ne# location is called ___________ a) cubic interpolation b) nea!est neighb"u! inte!p"lati"n c) bilinear interpolation d) bicubic interpolation ". ynamic range of imaging system is a ratio #here the upper limit is determined by a) /atu!ati"n b) 5oise c) 8rightness d) 0ontrast '. ;or ynamic range ratio the lo#er limit is determined by a) 3aturation b) 8rightness c) N"ise d) 0ontrast 1&. >uantitatively, spatial resolution cannot be represented in #hich of the follo#ing #ays a) line pairs
b) pixels c) dots d) N"ne "& the enti"ned
UNIT * 1. 9hich of the follo#ing mae an image difficult to enhance: a) 5arro# range of intensity levels b) ynamic range of intensity levels c) ?igh noise d) 2ll "& the menti"ned 2. 9hich of the follo#ing is a second-order derivative operator: a) ?istogram b) aplacian c) @aussian d) 5one of the mentioned !. 4esponse of the gradient to noise and fine detail is _____________ the AaplacianBs. a) eual to b) l"e! than c) greater than d) has no relation #ith %. ar characteristics in an image are better solved using ____________________. a) Aaplacian ransform b) @aussian ransform c) ?istogram 3pecification d) 5"e!-la T!ans&"!mati"n
*. 9hat is the smallest possible value of a gradient image: a) e b) 1 c) 0 d) -e $. 9hich of the follo#ing fails to #or on dar intensity distributions: a) Aaplacian ransform
b) @aussian ransform c) 6ist"g!am 7'ualiati"n d) 7o#er-la# ransformation +. _________________________ is used to detect diseases such as bone infection and tumors. a) 64 3can b) 7C 3can c) Nuclea! h"le "d# /can d) D-4ay ". ?o# do you bring out more of the seletal detail from a 5uclear 9hole 8ody 8one 3can: a) /ha!pening b) Cnhancing c) ransformation d) 5one of the mentioned '. /n alternate approach to median filtering is ______________ a) Use a mas% b) @aussian filter c) 3harpening d) Aaplacian filter 1&. ;inal step of enhancement lies in ________________ of the sharpened image. a) ncrease range of contrast b) ncrease range of brightness c) Inc!ease d#namic !ange d) 5one of the mentioned
UNIT * : 1.idel lo# pass filters has the transfer function is __________________ 2.dra# the mas for sobel or pre#itt or roberts operator_______________ !.#hat is the transfer function of 8utter#orth high pass filter_____________ %.dra# the freuency response of high pass filter___________ *.band pass filter is a combination of high pass lo# pass_ filters. $.#rite the euation for 2- ;ourier transform____________________ +.#rite any one property of fourier transform______________
".steps follo#ed in homomorphic filtering 1._____ 2._______ !._______ %.________ *._______ '.butter#orth filter has ___________transition a sm""th b. sudden c. pae d. bc 1&.these are the noises that are not random ,but very systematic errors a a!te&acts n"ise b. saltpepper noise c. @aussian noise d. #hite noise
UNIT * ; 1.image restoration is to improve the _______________of the image a'ualit# b.noise c.intensity d.colour 2.dra# the degradation model of the image______________
!.#rite the inverse filtering formulation_________________
%.due to uniform linear motion image is_________________ a. blurred b. sharpened c. smoothened d a < c *.#rite the inverse filter response formulation 2ns = g(>#)?&(>#)@h(>#)An(>#) $.#rite the geometric mean filter response_______________
+.#rite do#n the radon transform______________________ ".abrivate E0E scanner ____________________________ '.8lur is characterized by the _______________ response of the system a. filter b. noise c impulse d. image 1&.
UNIT * 8 1.color is a ___________phenomenon a ph#si"ps#ch"l"gical b. visual c. identification d. none 2.human perception of colour closely resembles the ____________clour model a. 06F b. 4@8 c 6/I d. 06FG !.____________is a mathematical model using #hich colours are represented ,created and visualized. a. image b. colour cc"l"u! space d.none %.the amount of #hite light present in a spectrum is called as ____________ a.intensity bsatu!ati"n c.hue d.colour
*.a 2%-bit colour image is called as ____________ a.binary image b.4@8 colour image c.?3 colour model dt!ue c"l"u! image $.tonal image gives ____________ a dist!ibuti"n "& c"l"u! intensities b. distribution of intensities c. distribution of gray level intensities d. distribution of lo# intensities +.colour depth is ____________ anumbe! "& bits used t" !ep!esent the c"l"u! b.number of bits used to represent the image size c. number of bits used to represent the hue d. number of bits used to represent the saturation ".to correct the intensity variations of phosphor dots ,_________ correction is used a.linear bgamma c.alpha d.#avelength '.acromatic image is nothing but____________ a.colour image b< image c.?3 colour image d.06FG colour image 1&.chromaticity diagram is useful for ___________ ac"l"u! mi>ing b.colour changing c.colour painting d.colour complement
