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Digital Image Evaluation
N/A
14
Physics
Professional
03/27/2013

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Term
the quality of data is measured by its
Definition
contrast
noise
frequency
Term
a measure of the differences between data values
Definition
acquired contrast
Term
when subject contrast is high, the acquired data contrast will be ___
Definition
high
Term
a high signal to noise ratio indicates ___ noise in the image
Definition
little
Term
noisiest componenet of digital systems
Definition
the television camera
Term
effect of noise level on a digital image is more like the effect of _________ on radiographic film
Definition
base plus fog
Term
a measure of the total amount of contrast within the image
Definition
acquired frequency
Term
the two principle characteristics of digital images
Definition
contrast and spatial resolution
Term
the number of gray shades than an imaging system can produce
Definition
dynamic range
Term
all digital imaging systems have ___ contrast than film
Definition
better
Term
how many grays each pixel can produce
Definition
bit depth
Term
primary method for adjusting contrast with digital imaging
Definition
window width
Term
the recorded detail of the digital image
determined primarily by matrix and pixel size, and gray scale bit depth
Definition
spatial resolution
Term
spatial resolution is expressed in terms of ___ dimensions, known as __, __, and ___ axis
Definition
3
x, y, z
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