Question 1

Gray-level mapping is an example of a:

Accepted Answer

A)  local operation
B)  global operation
C)  geometric operation
D)  point processing techniqueE) B) and D)
F) B) and C)

Question 2

Digital image processing can be defined as "subjecting numerical representations of objects to a series of operations to obtain a desired result."

Accepted Answer

A) True 
 B)False

Question 3

The sine wave is an example of an analog signal.

Accepted Answer

A) True 
 B)False

Question 4

The purpose of image enhancement is:

Accepted Answer

A)  to generate an image more pleasing to the observer
B)  to improve the quality of images that have distortions
C)  to allow measurements and statistics to be performed
D)  to reduce the size of the imageE) None of the above
F) C) and D)

Question 5

Which type(s)  of image compression results in no loss of information in the compressed image data? I. lossless
II. lossy
III. reversible
IV. irreversible

Accepted Answer

A)  I and II
B)  III and IV
C)  I and III
D)  II and IVE) A) and B)
F) B) and D)

Question 6

Nonvisible physical images include all of the following except:

Accepted Answer

A)  temperature
B)  pressure
C)  elevation maps
D)  hologramsE) A) and D)
F) B) and C)

Question 7

Which type of image processing technique is intended to modify the spatial position of the pixels in an image?

Accepted Answer

A)  point processing operation
B)  geometric processing operation
C)  local processing operation
D)  global processing operationE) C) and D)
F) A) and C)

Question 8

Which of the following reduces the amount of data that makes up the image?

Accepted Answer

A)  image enhancement
B)  image restoration
C)  image analysis
D)  image compressionE) None of the above
F) A) and B)

Question 9

A histogram in digital image processing is:

Accepted Answer

A)  a plot of the number of pixels as a function of the number of gray levels
B)  a local operation
C)  a spatial frequency filter
D)  a windowing levelE) A) and B)
F) A) and C)

Question 10

The systematic method of collecting data from the patient is called:

Accepted Answer

A)  image processing
B)  data acquisition
C)  image display
D)  image communicationE) A) and B)
F) A) and C)

Question 11

A 10* 10 matrix consists of ______ pixels.

Accepted Answer

A)  10
B)  20
C)  100
D)  120E) B) and C)
F) B) and D)

Question 12

The total number of gray levels is called:

Accepted Answer

A)  a matrix
B)  the gray scale
C)  an electronic signal
D)  bit depthE) B) and D)
F) B) and C)

Question 13

In which of the following are numerical representations of objects subjected to a series of operations to produce a desired result?

Accepted Answer

A)  digital image processing
B)  pattern recognition
C)  analog-to-digital conversion
D)  digital-to-analog conversionE) A) and B)
F) A) and C)

Question 14

Which of the following assigns integers to the brightness values measured by the photomultiplier tube?

Accepted Answer

A)  scanning
B)  sampling
C)  quantization
D)  analog-to-digital conversionE) A) and B)
F) B) and D)

Question 15

An increase of matrix size (with no change in field of view)  will ____________ detail.

Accepted Answer

A)  increase
B)  decrease
C)  not change
D)  have no effect onE) A) and C)
F) B) and C)

Question 16

Please match the following digital image processing concepts for each group. All answer selections will be used just once.
-Most frequently used image processing technique

Accepted Answer

A)  global operations
B)  point operations
C)  local operations
D)  geometrical operationsE) B) and C)
F) All of the above

Question 17

The process of dividing a picture into small regions called pixels is referred to as:

Accepted Answer

A)  sampling
B)  quantization
C)  analog-to-digital conversion
D)  scanningE) A) and B)
F) B) and C)

Question 18

An 8-bit analog-to-digital converter will divide a signal into:

Accepted Answer

A)  8 parts
B)  8 parts.
C)  64 parts
D)  256 partsE) A) and B)
F) All of the above

Question 19

All images displayed for viewing by humans are in the spatial frequency domain.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is the final step in digitizing an image?

Accepted Answer

A)  sampling
B)  analog-to-digital conversion
C)  quantization
D)  scanningE) B) and C)
F) A) and D)

Exam 3: Digital Image Processing

The systematic method of collecting data from the patient is called:

Correct AnswerverifiedShow Answer

Nonvisible physical images include all of the following except:

Correct AnswerverifiedShow Answer

In which of the following are numerical representations of objects subjected to a series of operations to produce a desired result?

Correct AnswerverifiedShow Answer

Which type of image processing technique is intended to modify the spatial position of the pixels in an image?

Correct AnswerverifiedShow Answer

Which type(s) of image compression results in no loss of information in the compressed image data? I. lossless II. lossy III. reversible IV. irreversible

Correct AnswerverifiedShow Answer

Digital image processing can be defined as "subjecting numerical representations of objects to a series of operations to obtain a desired result."

Correct AnswerverifiedShow Answer

The process of dividing a picture into small regions called pixels is referred to as:

Correct AnswerverifiedShow Answer

Which of the following assigns integers to the brightness values measured by the photomultiplier tube?

Correct AnswerverifiedShow Answer

An increase of matrix size (with no change in field of view) will ____________ detail.

Correct AnswerverifiedShow Answer

All images displayed for viewing by humans are in the spatial frequency domain.

Correct AnswerverifiedShow Answer

The sine wave is an example of an analog signal.

Correct AnswerverifiedShow Answer

The purpose of image enhancement is:

Correct AnswerverifiedShow Answer

A 10* 10 matrix consists of ______ pixels.

Correct AnswerverifiedShow Answer

Please match the following digital image processing concepts for each group. All answer selections will be used just once. -Most frequently used image processing technique

Correct AnswerverifiedShow Answer

A histogram in digital image processing is:

Correct AnswerverifiedShow Answer

An 8-bit analog-to-digital converter will divide a signal into:

Correct AnswerverifiedShow Answer

The total number of gray levels is called:

Correct AnswerverifiedShow Answer

Gray-level mapping is an example of a:

Correct AnswerverifiedShow Answer

Which of the following reduces the amount of data that makes up the image?

Correct AnswerverifiedShow Answer

Which of the following is the final step in digitizing an image?

Correct AnswerverifiedShow Answer

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