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_______.
triangular wave 0.0%
diagonal line 100.0%
sine wave 0.0%
circle 0.0%
A compandor is a
comparator-expander 0.0%
compressor-expander 50.0%
comparator-modulator 50.0%
compressor-demodulator 0.0%
A CRO screen has 10 divisions on the horizontal line. If a voltage signal 5sin(314t + 45) is examined with a line base setting of 5 ms/divisions, the number of cycles in the signal displayed on the...
0.5 0.0%
2.5 100.0%
5 0.0%
10 0.0%
About which of the following domains does image transform during image analysis provide information?
Frequency domain 0%
Time domain 0%
Both frequency and time domain 0%
By which of the following types of light is an object scanned in the scan-in method?
Infrared light 0%
Thin-collimated light 0%
Incandescent light 0%
LED light 0%
Contrast stretching is an_______.
image restoration technique 0%
image enhancement technique 0%
image analysis technique 0%
image segmentation technique 0%
Edge detection in image analysis is used to_______.
identify the object 0%
count the object 0%
find out the color of the object 0%
find out the number of edges in an object 0%
For which of following techniques is vector quantization used as a method?
Image perception 0%
Image segmentation 0%
Image compression 0%
Image sampling 0%
For which of the following image data compression techniques is PCM used as a method?
Predictive coding 0%
Transform coding 0%
Pixel coding 0%
Color image coding 0%
If two sinusoidal voltage signals, between 0 and 90 degree out of phase and of equal amplitude and equal frequencies: in a CRO are applied to the horizontal and vertical deflection plates, what sha...
A straight line with 45 degree angle with +ve x-axis 0%
An ellipse 0%
A square 0%
A straight line with 135 degree angle with +ve x-axis 0%
In image enhancement, which of the following function is performed on the image?
Certain image features are accentuated for subsequent analysis 0%
Known degradations are removed from the image 0%
Quantitative measurements of the image are taken 0%
All of the above 0%
In the image representation , a picture-element is also called a _____.
bit 0%
pixel 0%
dit 0%
point 0%
In the intermediate region of illumination,both rods and cones are active and provide _____.
photopic vision 0%
isotopic vision 0%
photographic vision 0%
mesopic vision 0%
In the structural patterns of the surfaces of which object is texture observed?
Wood 0%
Cloth 0%
Grain 0%
All of the above 0%
In which of the following image segmentation techniques are quad- trees used?
Feature extraction 0%
Segmentation 0%
Classification 0%
None of the above 0%
In which of the following processes is the binary ladder used?
Analog to digital conversion 0%
Digital to analog conversion 0%
Analog to analog conversion 0%
Digital to digital conversion 0%
Inter-frame coding technique exploits the ______ between successive frames.
gaps 0%
redundancy 0%
time 0%
space 0%
Of which of the following types is the general response of image detectors and recorders?
Non-linear 0%
Linear 0%
Exponential 0%
None of the above 0%
On how many input samples does the zero memory quantizer operate at a time?
One input sample 0%
Zero input sample 0%
Two input samples 0%
Four input samples 0%
The phenomenon in which overlapping of frequency spectrum takes place in sampling is called _______.
Nyquist rate 0%
Aliasing 0%
Quantization 0%
Digitization 0%
The term digital image generally refers to the processing of a _____.
two-dimensional picture 0%
three-dimensional picture 0%
one-dimensional picture 0%
All of the above 0%
The Wiener filter can be implemented in the frequency domain via_______.
fast binary transform 0%
slow binary transform 0%
fast unitary transform 0%
slow unitary transform 0%
To read the RMS value of which of the following waveforms are true RMS reading voltmeters used?
Only the sinusoidal waveform 0%
Only the non-sinusoidal waveform 0%
Both a and b 0%
Only the square waveform 0%
To which of the following types does Weiner filtering belong?
Non-linear filters 0%
Linear filters 0%
Non-recursive filter 0%
Inverse filters 0%
Two objects with different surroundings can have identical _______ but different ________.
luminance, brightness 0%
brightness, luminance 0%
hue, brightness 0%
brightness, hue 0%
Under which of the following conditions is the phenomenon called contouring used?
If the number of quantization levels is more than that required in gray scale quantization. 0%
If the number of quantization levels is less than that required in grey scale quantization. 0%
When there is not a single level of quantization in gray scale quantization. 0%
All of the above 0%
What is the range of wavelength of the light in the visible region?
150nm to 250nm 0%
380nm to 750nm 0%
350mm to780 mm 0%
350um to 780um 0%
What would be the bandwidth requirement if we convert an analog video signal into a digital one?
Larger bandwidth will be required for the digital signal 0%
Shorter bandwidth will be required for the digital signal 0%
The bandwidth requirement would be the same 0%
It will depend upon the sampling rate 0%
Which of the following are the perceptual attributes of color?
luminance, hue and saturation 0%
brightness, hue and saturation. 0%
color, brightness and saturation 0%
contrast, hue and saturation 0%
Which of the following can be termed a two- tone image?
Line drawings 0%
Letters 0%
Newsprints 0%
All of the above 0%
Which of the following effects shows that brightness is not a monotonic function of luminance?
Background law 0%
Dark shadow effect 0%
Mach band effect 0%
Power band effect 0%
Which of the following expressions can define the Q -factor of a coil?
C/R 0%
R/C 0%
L/R 0%
R/L 0%
Which of the following filters can effectively remove the aliasing effect?
High pass filter 0%
Low pass filter 0%
Band pass filter 0%
Band stop filter 0%
Which of the following filters is used for image restoration?
Matched filter 0%
Dumb filter 0%
Weiner filter 0%
Band stop filter 0%
Which of the following is a color coordinating system used for TV. Receivers?
N.T.S.C 0%
PAL 0%
SECAM 0%
All of the above 0%
Which of the following is a linear filtering method?
Wiener filter 0%
FIR filter 0%
Kalman filter 0%
All of the above 0%
Which of the following is a method to reduce speckle noise?
Homomorphic filtering 0%
Entropy filtering 0%
Update filtering 0%
Steady-state filtering 0%
Which of the following is a moment based feature of an image?
Centre of mass 0%
Orientation 0%
Bounding rectangle 0%
All of the above 0%
Which of the following is a type of digital voltmeters?
Ramp type 0%
Dual slope integrating type 0%
Integrating type 0%
All of the above 0%
Which of the following is an advantage of the vacuum tube voltmeter over the transistorized voltmeter (TVM)?
The VTVM requires warm-up time 0%
The VTVM has high input impedance 0%
The power consumption of the VTVM is more in comparison with the TVM 0%
The VTVM cannot be operated on a low voltage source 0%
Which of the following is an application of the digital image processing?
Geographical mapping 0%
Prediction of agricultural crops 0%
Weather forecasting 0%
All of the above 0%
Which of the following is an image analysis technique?
Feature extraction 0%
Segmentation 0%
Classification 0%
All of the above 0%
Which of the following is an image data compression technique?
Pixel coding 0%
Predictive coding 0%
Transform coding 0%
All of the above 0%
Which of the following is an image restoration model?
Noise model 0%
Sampled observation model 0%
Iimage formation model 0%
All of the above 0%
Which of the following is an image segmentation technique?
Template matching 0%
Texture matching 0%
Boundary detection 0%
All of the above 0%
Which of the following is not a geometric feature of an image?
Perimeter 0%
Area 0%
Centre of mass 0%
Corners 0%
Which of the following is not a method of predictive coding?
Delta modulation 0%
Zonal coding 0%
Adaptive coding 0%
Interframe techniques 0%
Which of the following is not a model of image representation?
Perception model 0%
Local model 0%
Memory model 0%
Global model 0%
Which of the following is not an image filtering method?
Speckle noise reduction 0%
Maximum entropy 0%
Bosch Method 0%
Bayesian method 0%
Which of the following methods is used to analyse the structure of patterns in image analysis?
Medial axis transform 0%
Skeleton algorithms 0%
Thinning algorithm 0%
All of the above 0%
Which of the following noises is produced when monochromatic radiation is scattered from a surface and when roughness is of the order of a wavelength?
Shot noise 0%
Speckle noise 0%
Thermal noise 0%
Humm noise 0%
Which of the following statement is not true?
Any color can be matched by mixing at the most three colored lights. 0%
The luminance of a color mixture is equal to the sum of the luminance of its components. 0%
The human eye can resolve the components of a color mixture. 0%
A color match at one luminance level holds over a wide range of luminances. 0%
Which of the following statement is true?
A band limited image can be space limited also 0%
A space limited image can be band limited also 0%
A band limited image cannot be space limited 0%
None of the above 0%
Which of the following statements is true of quantizer mapping?
For a given quantizer output, the input value cannot be determined uniquely. 0%
For a given quantizer output, the input value can be determined uniquely. 0%
Quantizer mapping is reversible. 0%
There is no distortion in quantization. 0%
Which of the following statements represents the Bloch's law?
Light flashes of different duration but equal energy are indistinguishable. 0%
When a slowly flashing light is observed, the individual flashes are distinguishable. 0%
The eye is more sensitive to the flickering of high spatial frequencies than low spatial frequencies 0%
All of the above 0%
Which of the following steps follows sampling in image digitization?
Modulation 0%
Filtering 0%
Quantization 0%
Demodulation 0%
Which of the following techniques belongs to inter-frame coding?
Frame repetition 0%
Resolution exchange 0%
Conditional replenishment 0%
All of the above 0%
Which of the following techniques does Kalman filtering employs?
Least square filtering 0%
Fourier domain filtering 0%
Recursive filtering 0%
Interpolation filtering 0%
Which of the following techniques is used in analog to digital (ADc)conversion?
Ramp conversion 0%
Dual slope conversion 0%
Successive- approximation conversion 0%
All of the above 0%
Which of the following types of photoreceptors does the retina of the human eye contain?
rods and cones 0%
cones and lens 0%
rods and lens 0%
lens and eyelid 0%
Which part of the human eye acts as an aperture?
Retina 0%
Cones 0%
Pupil 0%
Rods 0%
Which type of scanning is done by the Charge Coupled Devices (CCD)camera?
Scan out 0%
Scan in 0%
Self scanning 0%
All the above 0%
Which type of target is there in the vidicon tube?
Photoconductive 0%
Photo emissive 0%
Photosensitive 0%
All the above 0%
Which type of vision is provided by the rods in the human eye?
Isotopic vision 0%
Orthographic vision 0%
Scotopic vision 0%
Isotropic vision 0%
White Block Skipping (WBS) is a method used for_______.
image filtering 0%
image compression 0%
image sampling 0%
image perception 0%