16. _____________ is the effect caused by the use of an insufficient number of intensity levels in smooth areas of a digital image.
A. Gaussian smooth
B. Contouring
C. False Contouring
D. Interpolation
17. The process of using known data to estimate values at unknown locations is called
A. Acquisition
B. Interpolation
C. Pixelation
D. None of the Mentioned
18. Which of the following is NOT an application of Image Multiplication?
A. Shading Correction
B. Masking
C. Pixelation
D. Region of Interest operations
19. The procedure done on a digital image to alter the values of its individual pixels is
A. Neighbourhood Operations
B. Image Registration
C. Geometric Spatial Transformation
D. Single Pixel Operation
20. In Geometric Spatial Transformation, points whose locations are known precisely in input and reference images.
A. Tie points
B. Réseau points
C. Known points
D. Key-points
21. Of the following, _________ has the maximum frequency.
A. UV Rays
B. Gamma Rays
C. Microwaves
D. Radio Waves
22. In the Visible spectrum the ______ color has the maximum wavelength.
A. Violet
B. Blue
C. Red
D. Yellow
23. Wavelength and frequency are related as : (c = speed of light)
A. c = wavelength / frequency
B. frequency = wavelength / c
C. wavelength = c * frequency
D. c = wavelength * frequency
24. Electromagnetic waves can be visualized as a
A. sine wave
B. cosine wave
C. tangential wave
D. None of the mentioned
25. How is radiance measured?
A. lumens
B. watts
C. Armstrong
D. hertz
26. Which of the following is used for chest and dental scans?
A. Hard X-Rays
B. Soft X-Rays
C. Radio waves
D. Infrared Rays
27. Which of the following is impractical to measure?
A. Frequency
B. Radiance
C. Luminance
D. Brightness
28. Massless particle containing a certain amount of energy is called
A. Photon
B. Shell
C. Electron
D. None of the mentioned
29. What do you mean by achromatic light?
A. Chromatic light
B. Monochromatic light
C. Infrared light
D. Invisible light
30. Which of the following embodies the achromatic notion of intensity?
A. Luminance
B. Brightness
C. Frequency
D. Radiance
31. How is array operation carried out involving one or more images?
A. array by array
B. pixel by pixel
C. column by column
D. row by row
32. The property indicating that the output of a linear operation due to the sum of two inputs is the same as performing the operation on the inputs individually and then summing the results is called ___________
A. additivity
B. heterogeneity
C. homogeneity
D. None of the Mentioned
33. The property indicating that the output of a linear operation to a constant time as input is the same as the output of operation due to original input multiplied by that constant is called _________
A. additivity
B. heterogeneity
C. homogeneity
D. None of the Mentioned
34. Enhancement of differences between images is based on the principle of ____________
A. Additivity
B. Homogeneity
C. Subtraction
D. None of the Mentioned
35. A commercial use of Image Subtraction is ___________
A. Mask mode radiography
B. MRI scan
C. CT scan
D. None of the Mentioned
36. Region of Interest (ROI) operations is commonly called as ___________
A. Shading correction
B. Masking
C. Dilation
D. None of the Mentioned
37. If every element of a set A is also an element of a set B, then A is said to be a _________ of set B.
A. Disjoint set
B. Union
C. Subset
D. Complement set