21. State for the validation of the statement:
“In general-purpose for a digital image of zooming and shrinking, where Bilinear Interpolation generally is the method of choice over nearest-neighbor Interpolation”.
A. True
B. False
22. A pixel p at coordinates (x, y) has neighbors whose coordinates are given by:
(x+1, y), (x-1, y), (x, y+1), (x, y-1)
This set of pixels is called ____________
A. 4-neighbors of p
B. Diagonal neighbors
C. 8-neighbors
D. None of the mentioned
23. A pixel p at coordinates (x, y) has neighbors whose coordinates are given by:
(x+1, y+1), (x+1, y-1), (x-1, y+1), (x-1, y-1)
This set of pixels is called ____________
A. 4-neighbors of p
B. Diagonal neighbors
C. 8-neighbors
D. None of the mentioned
24. What is the set of pixels of 8-neighbors of pixel p at coordinates (x, y)?
A. (x+1, y), (x-1, y), (x, y+1), (x, y-1), (x+2, y), (x-2, y), (x, y+2), (x, y-2)
B. (x+1, y), (x-1, y), (x, y+1), (x, y-1), (x+1, y+1), (x+1, y-1), (x-1, y+1), (x-1, y-1)
C. (x+1, y+1), (x+1, y-1), (x-1, y+1), (x-1, y-1), (x+2, y+2), (x+2, y-2), (x-2, y+2), (x-2, y-2)
D. (x+2, y), (x-2, y), (x, y+2), (x, y-2), (x+2, y+2), (x+2, y-2), (x-2, y+2), (x-2, y-2)
25. Two pixels p and q having gray values from V, the set of gray-level values used to define adjacency, are m-adjacent if:
A. q is in N4(p)
B. q is in ND(p) and the set N4(p) ∩ N4(q) has no pixels whose values are from V
C. Any of the mentioned
D. None of the mentioned
26. Let S, a subset of pixels in an image, is said to be a connected set if:
A. If for any pixel p in S, the set of pixels that are connected to it in Sis only one
B. If it only has one connected component
C. If S is a region
D. All of Mentioned
27. Let R be a subset of pixels in an image. How can we define the contour of R?
A. If R is a region, and the set of pixels in R has one or more neighbors that are not in R
B. If R is an entire image, then the set of pixels in the first and last rows and columns of R
C. All of Mentioned
D. None of the mentioned
28. For pixels p(x, y), q(s, t), and z(v, w), D is a distance function or metric if:
A. D(p, q) ≥ 0
B. D(p, q) = D(q, p)
C. D(p, z) ≤ D(p, q) + D(q, z)
D. All of Mentioned
29. For pixels p(x, y), q(s, t), the Euclidean distance between p and q is defined as:
A. D(p, q) = [(x – s)2 + (y – t)2]1/2
B. D(p, q) = |x – s| + |y – t|
C. D(p, q) = max (|x – s| + |y – t|)
D. None of the mentioned
30. For pixels p(x, y), q(s, t), the city-block distance between p and q is defined as:
A. D(p, q) = [(x – s)2 + (y – t)2]1/2
B. D(p, q) = |x – s| + |y – t|
C. D(p, q) = max (|x – s| + |y – t|)
D. None of the mentioned