11. The domain that refers to the image plane itself and the domain that refers to the Fourier transform of an image is/are :
A. Spatial domain in both
B. Frequency domain in both
C. Spatial domain and Frequency domain respectively
D. Frequency domain and Spatial domain respectively
12. What is the technique for a gray-level transformation function called, if the transformation would be to produce an image of higher contrast than the original by darkening the levels below some gray-level m and brightening the levels above m in the original image.
A. Contouring
B. Contrast stretching
C. Mask processing
D. Point processing
13. For Image Enhancement a general approach is to use a function of values of f (input image) in a predefined neighborhood of (x, y) to determine the value of g (output image) at (x, y). The techniques that use such approaches are called ________
A. Contouring
B. Contrast stretching
C. Mask processing
D. None of the mentioned
14. Using gray-level transformation, the basic function linearity deals with which of the following transformation?
A. log and inverse-log transformations
B. negative and identity transformations
C. nth and nth root transformations
D. All of the mentioned
15. Using gray-level transformation, the basic function Logarithmic deals with which of the following transformation?
A. Log and inverse-log transformations
B. Negative and identity transformations
C. nth and nth root transformations
D. All of the mentioned
16. Using gray-level transformation, the basic function power-law deals with which of the following transformation?
A. log and inverse-log transformations
B. negative and identity transformations
C. nth and nth root transformations
D. all of the mentioned
17. If r is the gray level of the image before processing and s after processing then which expression defines the negative transformation, for the gray level in the range [0, L-1]?
A. s = L – 1 – r
B. s = crᵞ, c, and ᵞ are positive constants
C. s = c log (1 + r), c is a constant and r ≥ 0
D. none of the mentioned
18. If r is the gray level of the image before processing and s after processing then which expression helps to obtain the negative of an image for the gray level in the range [0, L-1]?
A. s = L – 1 – r
B. s = crᵞ, c, and ᵞ are positive constants
C. s = c log (1 + r), c is a constant and r ≥ 0
D. none of the mentioned
19. If r is the gray level of the image before processing and s after processing then which expression defines the power-law transformation, for the gray level in the range [0, L-1]?
A. s = L – 1 – r
B. s = crᵞ, c, and ᵞ are positive constants
C. s = c log (1 + r), c is a constant and r ≥ 0
D. none of the mentioned
20. Which of the following transformations is particularly well suited for enhancing an image with white and gray detail embedded in dark regions of the image, especially when there is more black area in the image.
A. Log transformations
B. Power-law transformations
C. Negative transformations
D. None of the mentioned