11. Why is scaling of Laplacian filtered images necessary?
A. Because it contains high positive values
B. Because it contains a high negative value
C. Because it contains both positive and negative values
D. None of the mentioned
12. Which of the following fact is true for the masks that include diagonal neighbors than the masks that don’t?
A. Mask that excludes diagonal neighbors has more sharpness than the masks that doesn’t
B. Mask that includes diagonal neighbors has more sharpness than the masks that doesn’t
C. Both masks have the same sharpness result
D. None of the mentioned
13. The principal factor to determine the spatial resolution of an image is _______
A. Quantization
B. Sampling
C. Contrast
D. Dynamic range
14. What causes the effect, imperceptible set of the very fine ridge-like structures in areas of smooth gray levels?
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 a huge number of gray levels in smooth areas of a digital image
C. All of the mentioned
D. None of the mentioned
15. 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?
A. Dynamic range
B. Ridging
C. Graininess
D. False contouring
16. Using a rough rule of thumb, and assuming powers of 2 for convenience, what image size is about the smallest images that can be expected to be reasonably free of objectionable sampling checkerboards and false contouring?
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
17. What does a shift up and right in the curves of is preference curve simply means? Verify-in terms of N (number of pixels) and k (L=2k, L is the gray level) values.
A. Smaller values for N and k, implies a better picture quality
B. Larger values for N and k, imply low picture quality
C. Larger values for N and k, imply better picture quality
D. Smaller values for N and k, imply low picture quality
18. How do the curves behave to the detail in the image in iso preference curve?
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
19. For an image with a large amount of detail, if the value of N (number of pixels) is fixed then what is the gray level dependency in the perceived quality of this type of image?
A. independent of the number of gray levels used
B. Nearly independent of the number of gray levels used
C. Highly dependent on the number of gray levels used
D. None of the mentioned
20. What is a band-limited function?
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