Digital Image Processing Online Test Online Exam Quiz
Digital Image Processing Online Test GK Quiz. Question and Answers related to Digital Image Processing Online Test. MCQ (Multiple Choice Questions with answers about Digital Image Processing Online Test
Using rough rule of thumb, and assuming powers of 2 for convenience, what image size are about the smallest images that can be expected to be reasonably free of objectionable sampling checkerboards and false contouring?
Options
A : 512*512pixels and 16 gray levels
B : 256*256pixels and 64 gray levels
C : 64*64pixels and 16 gray levels
D : 32*32pixels and 32 gray levels
What is a band-limited function?
Options
A : A function of limited duration whose highest frequency is finite
B : A function of limited duration whose highest frequency is infinite
C : All of the mentioned
D : None of the mentioned
For a band-limited function, which Theorem says that “if the function is sampled at a rate equal to or greater than twice its highest frequency, the original function can be recovered from its samples”?
Options
A : Band-limitation theorem
B : Aliasing frequency theorem
C : Shannon sampling theorem
D : None of the mentioned
How aliasing does corrupts the sampled image?
Options
A : By introducing additional frequency components to the sampled function
B : By removing some frequency components from the sampled function
C : All of the mentioned
D : None of the mentioned
How can one reduce the aliasing effect on an image?
Options
A : By reducing the high-frequency components of image by blurring the image
B : By increasing the high-frequency components of image by blurring the image
C : By reducing the high-frequency components of image by clarifying the image
D : By increasing the high-frequency components of image by clarifying the image
What causes the effect, imperceptible set of very fine ridge like structures in areas of smooth gray levels?
Options
A : Caused by the use of an insufficient number of gray levels in smooth areas of a digital image
B : Caused by the use of huge number of gray levels in smooth areas of a digital image
C : All of the mentioned
D : None of the mentioned
How does the curves behave to the detail in the image in isopreference curve?
Options
A : Curves tend to become more vertical as the detail in the image decreases
B : Curves tend to become less vertical as the detail in the image increases
C : Curves tend to become less vertical as the detail in the image decreases
D : Curves tend to become more vertical as the detail in the image increases
What is the name of the effect caused by the use of an insufficient number of gray levels in smooth areas of a digital image?
Options
A : Dynamic range
B : Ridging
C : Graininess
D : False contouring
The principal factor to determine the spatial resolution of an image is _______
Options
A : Quantization
B : Sampling
C : Contrast
D : Dynamic range
What is the name of the phenomenon that corrupts the sampled image, and how does it happen?
Options
A : Shannon sampling, if the band-limited functions are undersampled
B : Shannon sampling, if the band-limited functions are oversampled
C : Aliasing, if the band-limited functions are undersampled
D : Aliasing, if the band-limited functions are oversampled
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