Deck 2: Digital Image Processing Terminology and Concepts

Question 1

_____________ 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

Answer 1

false contouring

Question 2

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

Answer 2

interpolation

Question 3

Which of the following is NOT an application of Image Multiplication?

A)shading correction
B)masking
C)pixelation
D)region of interest operations

Answer 3

pixelation

Question 4

The procedure done on a digital image to alter the values of its individual pixels is

A)neighbourhood operations
B)image registration
C)geometric spacial transformation
D)single pixel operation

Question 5

In Geometric Spacial Transformation, points whose locations are known precisely in input and reference images.

A)tie points
B)key-points
C)known points

Question 6

A continuous image is digitised at _______ points.

A)random
B)vertex
C)contour
D)sampling

Question 7

The transition between continuous values of the image function and its digital equivalent is called ______________

A)quantisation
B)sampling
C)rasterisation
D)none of the mentioned

Question 8

Images quantised with insufficient brightness levels will lead to the occurrence of ____________

A)pixillation
B)blurring
C)false contours
D)none of the mentioned

Question 9

The smallest discernible change in intensity level is called ____________

A)intensity resolution
B)contour
C)saturation
D)contrast

Question 10

What is the tool used in tasks such as zooming, shrinking, rotating, etc.?

A)sampling
B)interpolation
C)filters
D)none of the mentioned

Question 11

The type of Interpolation where for each new location the intensity of the immediate pixel is assigned is ___________

A)bicubic interpolation
B)cubic interpolation
C)bilinear interpolation
D)nearest neighbour interpolation

Question 12

The type of Interpolation where the intensity of the FOUR neighbouring pixels is used to obtain intensity a new location is called ___________

A)cubic interpolation
B)nearest neighbour interpolation
C)bilinear interpolation
D)bicubic interpolation

Question 13

Dynamic range of imaging system is a ratio where the upper limit is determined by

A)saturation
B)noise
C)brightness
D)contrast

Question 14

For Dynamic range ratio the lower limit is determined by

A)saturation
B)brightness
C)noise
D)contrast

Question 15

Quantitatively, spatial resolution cannot be represented in which of the following ways

A)line pairs
B)pixels
C)dots
D)none of the mentioned

Question 16

In 4-neighbours of a pixel p, how far are each of the neighbours located from p?

A)one pixel apart
B)four pixels apart
C)alternating pixels
D)none of the mentioned

Question 17

If S is a subset of pixels, pixels p and q are said to be ____________ if there exists a path between them consisting of pixels entirely in S.

A)continuous
B)ambiguous
C)connected
D)none of the mentioned

Question 18

If R is a subset of pixels, we call R a _________ of the image if R is a connected set.

A)disjoint
B)region
C)closed
D)adjacent

Question 19

Two regions are said to be ___________ if their union forms a connected set.

A)adjacent
B)disjoint
C)closed
D)none of the mentioned

Question 20

If an image contains K disjoint regions, what does the union of all the regions represent?

A)background
B)foreground
C)outer border
D)inner border

Question 21

For a region R, the set of points that are adjacent to the complement of R is called as ________

A)boundary
B)border
C)contour
D)all of the mentioned

Question 22

The distance between pixels p and q, the pixels have a distance less than or equal to some value of radius r centred at (x,y) is called :

A)euclidean distance
B)city-block distance
C)chessboard distance
D)none of the mentioned

Question 23

The distance between pixels p and q, the pixels have a distance less than or equal to some value of radius r, form a diamond centred at (x,y) is called :

A)euclidean distance
B)chessboard distance
C)city-block distance
D)none of the mentioned

Question 24

The distance between pixels p and q, the pixels have a distance less than or equal to some value of radius r, form a square centred at (x,y) is called :

A)euclidean distance
B)chessboard distance
C)city-block distance
D)none of the mentioned

Question 25

Which of the following is NOT is not a type of Adjacency?

A)4-adjacency
B)8-adjacency
C)m-adjacency
D)none of the mentioned