1. The principle objective of Sharpening, to highlight transitions is ___________________.
Correct : C. intensity
2. How can Sharpening be achieved?
Correct : D. none of the mentioned
3. What does Image Differentiation enhance?
Correct : A. edges
4. What does Image Differentiation de-emphasize?
Correct : C. areas with slowly varying intensities
5. The requirements of the First Derivative of a digital function:
Correct : D. all of the mentioned
6. What is the Second Derivative of Image Sharpening called?
Correct : B. laplacian
7. The ability that rotating the image and applying the filter gives the same result, as applying the filter to the image first, and then rotating it, is called ______________________.
Correct : C. rotation invariant
8. For a function f(x,y), the gradient of ‘f’ at coordinates (x,y) is defined as a ____________________.
Correct : D. 2-d column vector
9. Where do you find frequent use of Gradient?
Correct : A. industrial inspection
10. Which of the following occurs in Unsharp Masking?
Correct : D. all of the mentioned
11. Which of the following make an image difficult to enhance?
Correct : D. all of the mentioned
12. Which of the following is a second-order derivative operator?
Correct : B. laplacian
13. Response of the gradient to noise and fine detail is _____________ the Laplacian’s.
Correct : B. lower than
14. Dark characteristics in an image are better solved using ____________________.
Correct : D. power-law transformation
15. What is the smallest possible value of a gradient image?
Correct : C. 0
16. Which of the following fails to work on dark intensity distributions?
Correct : C. histogram equalization
17. _________________________ is used to detect diseases such as bone infection and tumors.
Correct : C. nuclear whole body scan
18. How do you bring out more of the skeletal detail from a Nuclear Whole Body Bone Scan?
Correct : A. sharpening
19. Final step of enhancement lies in ________________ of the sharpened image.
Correct : C. increase dynamic range
20. An alternate approach to median filtering is ______________