DDA Exam Comprehensive
Questions and Solutions
Graded A+
The digitizing process that is defined as the detection and measurement of the intensity of a
signal coming into the system at each pixel location is termed what ? A. Scanning B. Digitization
C. Quantizing D. Sampling - Answer: D. Sampling
The term " leveling " for image manipulation is referring to the user's ability to do what to the
digital image ? A. To increase or decrease the brightness of the image
B. To increase or decrease the image contrast
C. To sharpen the image
D. To correct for any geometric distortion - Answer: A. To increase or decrease brighness of an
image
Spatial domain operations can be further subdivided into three categories : point processing
operations , global operations and what else ?
A. Area processing operations
B. Controlled operations
C. LUT operations
D. Communal processing operations - Answer: Area Processing
Aside from adjusting the Window Width and Level which of the following can also be performed
under Intensity Domain ?
A. Edge Enhancement
, B. Translation
C. Histogram Analysis
D. Smoothing - Answer: Histogram Analysis
An example of an Intensity Domain Operation would be ?
A. Smoothing
B. Leveling
C. Translation
D. Zooming - Answer: Leveling
Potential flaws in the electronics of the receptor system which can produce an uneven
distribution of the " background " density ( pixel values ) of the image is referred to as what ?
A. Field Uniformity
B. Quantum Mottle
C. Latent Hash
D. Radiation Scatter - Answer: Field Uniformity
The Modulation Transfer Function ( MTF ) is a plot of what ?
A. Contrast versus spatial frequency
B. Pixel Value versus spatial dispersion C. SNR versus CNR
D. Contrast versus Sensitivity - Answer: Contrast vs spatial frequency
Resolution can be subcategorized into which of the following ?
A. Pixel value and Pixel pitch
B. Visibility and Recognizability
C. Shape Distortion and Sharpness
Questions and Solutions
Graded A+
The digitizing process that is defined as the detection and measurement of the intensity of a
signal coming into the system at each pixel location is termed what ? A. Scanning B. Digitization
C. Quantizing D. Sampling - Answer: D. Sampling
The term " leveling " for image manipulation is referring to the user's ability to do what to the
digital image ? A. To increase or decrease the brightness of the image
B. To increase or decrease the image contrast
C. To sharpen the image
D. To correct for any geometric distortion - Answer: A. To increase or decrease brighness of an
image
Spatial domain operations can be further subdivided into three categories : point processing
operations , global operations and what else ?
A. Area processing operations
B. Controlled operations
C. LUT operations
D. Communal processing operations - Answer: Area Processing
Aside from adjusting the Window Width and Level which of the following can also be performed
under Intensity Domain ?
A. Edge Enhancement
, B. Translation
C. Histogram Analysis
D. Smoothing - Answer: Histogram Analysis
An example of an Intensity Domain Operation would be ?
A. Smoothing
B. Leveling
C. Translation
D. Zooming - Answer: Leveling
Potential flaws in the electronics of the receptor system which can produce an uneven
distribution of the " background " density ( pixel values ) of the image is referred to as what ?
A. Field Uniformity
B. Quantum Mottle
C. Latent Hash
D. Radiation Scatter - Answer: Field Uniformity
The Modulation Transfer Function ( MTF ) is a plot of what ?
A. Contrast versus spatial frequency
B. Pixel Value versus spatial dispersion C. SNR versus CNR
D. Contrast versus Sensitivity - Answer: Contrast vs spatial frequency
Resolution can be subcategorized into which of the following ?
A. Pixel value and Pixel pitch
B. Visibility and Recognizability
C. Shape Distortion and Sharpness
