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Digital Image Processing
Digital Image Processing Interview
Quiz 1
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Q.1
Which of the following expression is used to denote spatial domain process?
a) g(x,y)=T[f(x,y)]
b) f(x+y)=T[g(x+y)]
c) g(xy)=T[f(xy)]
d) g(x-y)=T[f(x-y)]
Q.2
Which of the following shows three basic types of functions used frequently for image enhancement?
a) Linear, logarithmic and inverse law
b) Power law, logarithmic and inverse law
c) Linear, logarithmic and power law
d) Linear, exponential and inverse law
Q.3
Which expression is obtained by performing the negative transformation on the negative of an image with gray levels in the range[0,L-?
a) s=L+1-r
b) s=L+1+r
c) s=L-1-r
d) s=L-1+r
Q.4
What is the general form of representation of log transformation?
a) s=clog10(1/r)
b) s=clog10(1+r)
c) s=clog10(1*r)
d) s=clog10(1-r)
Q.5
What is the general form of representation of power transformation?
a) s=crγ
b) c=srγ
c) s=rc
d) s=rcγ
Q.6
What is the name of process used to correct the power-law response phenomena?
a) Beta correction
b) Alpha correction
c) Gamma correction
d) Pie correction
Q.7
Which of the following transformation function requires much information to be specified at the time of input?
a) Log transformation
b) Power transformation
c) Piece-wise transformation
d) Linear transformation
Q.8
In contrast stretching, if r1=s1 and r2=s2 then which of the following is true?
a) The transformation is not a linear function that produces no changes in gray levels
b) The transformation is a linear function that produces no changes in gray levels
c) The transformation is a linear function that produces changes in gray levels
d) The transformation is not a linear function that produces changes in gray levels
Q.9
In contrast stretching, if r1=rs1=0 and s2=L-1 then which of the following is true?
a) The transformation becomes a thresholding function that creates an octal image
b) The transformation becomes a override function that creates an octal image
c) The transformation becomes a thresholding function that creates a binary image
d) The transformation becomes a thresholding function that do not create an octal image
Q.10
In contrast stretching, if r1≤rand s1≤s2 then which of the following is true?
a) The transformation function is double valued and exponentially increasing
b) The transformation function is double valued and monotonically increasing
c) The transformation function is single valued and exponentially increasing
d) The transformation function is single valued and monotonically increasing
Q.11
In which type of slicing, highlighting a specific range of gray levels in an image often is desired?
a) Gray-level slicing
b) Bit-plane slicing
c) Contrast stretching
d) Byte-level slicing
Q.12
Which of the following depicts the main functionality of the Bit-plane slicing?
a) Highlighting a specific range of gray levels in an image
b) Highlighting the contribution made to total image appearance by specific bits
c) Highlighting the contribution made to total image appearance by specific byte
d) Highlighting the contribution made to total image appearance by specific pixels
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