Ch. 16 Dynamic Range Flashcards
___________________________ is a method of describing the extent to which a signal can vary and still maintain accuracy.
Dynamic Range is a method of describng the extent to which a signal can vary and still maintain accuracy
“number of available choices”
As a general rule, the dynamic range ____________________________ (decreases,increases) the more it is processed.
As a general rule, the dynamic range decreases the more it is processed.
units for dynamic range are:
decibels (dB)
dynamic range indicates the # of __________________ on an image
dynamic range indicates the # of gray shades on an image
“number of available choices”
dynamic range
The lower limit at which signals are within range is the _________________________
The lower limit at which signals are within range is the Threshold
Strong signals ________________________ the system because they are too high
Strong signals Saturate the system because they are too high
below the threshold, disregarded as noise are ______________ signals
below the threshold, disregarded as noise are weak signals
saturate the system, displayed as equal to the highest signals are ______________ signals
saturate the system, displayed as equal to the highest signals are strong signals
___________________________ is a technique that reduces the dynamic range of a signal without introducing errors.
Compression is a technique that reduces the dynamic range of a signal without introducing errors
is dynamic range adjustable?
yes
dynamic range of a compressed signal:
subtract decibel
dynamic range of original uncompressed signal
add decibel
narrower dynamic range means __________________ gray shades
narrower dynamic range means fewer gray shades
wider dynamic range means _____________________ gray shades
wider dynamic range means many gray shades
