Digital Imaging Test

Digital Imaging Test


Which of the following is not a model of image representation?

a. Perception model
b. Local model
c. Memory model
d. Global model

A certain oscilloscope with a 4cm by 4cm screen has its sweep output fed to its input. If the x and y sensitivities are the same, the oscillosope will display a_______.

a. triangular wave
b. diagonal line
c. sine wave
d. circle

What would be the bandwidth requirement if we convert an analog video signal into a digital one?

a. Larger bandwidth will be required for the digital signal
b. Shorter bandwidth will be required for the digital signal
c. The bandwidth requirement would be the same
d. It will depend upon the sampling rate

Which of the following statement is true?

a. A band limited image can be space limited also
b. A space limited image can be band limited also
c. A band limited image cannot be space limited
d. None of the above

Which type of scanning is done by the Charge Coupled Devices (CCD)camera?

a. Scan out
b. Scan in
c. Self scanning
d. All the above

Which of the following methods is used to analyse the structure of patterns in image analysis?

a. Medial axis transform
b. Skeleton algorithms
c. Thinning algorithm
d. All of the above

Which of the following effects shows that brightness is not a monotonic function of luminance?

a. Background law
b. Dark shadow effect
c. Mach band effect
d. Power band effect

To read the RMS value of which of the following waveforms are true RMS reading voltmeters used?

a. Only the sinusoidal waveform
b. Only the non-sinusoidal waveform
c. Both a and b
d. Only the square waveform

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