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RAC

Definition

Randomly acquired characteristic, interpreted with recording quality and alternative origins in mind. A randomly acquired characteristic is interpreted within the recovered pattern and the reference item. A feature described as random is not automatically unique or statistically quantified.

Context
Pattern comparison

For example, a recorded defect may be useful for comparison while its significance remains limited by image quality and plausible alternative origins.

State the method and evidence supporting the comparison.

Related terms

Track Width
The transverse separation between specified vehicle tracks or wheel reference points. State the actual reference points measured. Neither measurement alone uniquely identifies...
Two-Dimensional Impression
Recorded pattern produced mainly by material deposition, removal or related surface transfer. Suitability depends on which useful features the applied examination can...
Wheelbase
The longitudinal distance between specified vehicle axles under a stated measurement convention. Track width is a transverse separation defined for specified tracks...

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