9. Glossary
The following terms might have additional meanings. The definitions that follow are in the context of the HDV300 and HDV400 systems.
accuracy
The maximum error that the system will produce when measuring a true standard.
aperture
An optical element which limits the diameter of the optical bundle that can pass through a specific plane.
axis
A direction which allows movement and along which dimensions can be measured. In the HDV system, the X-axis is horizontal from left to right, and the Y-axis is vertical from bottom to top.
blooming
A condition where the parts of the video image are distorted by oversaturated bright regions, making objects appear larger than they really are.
CCD
See charge-coupled device.
charge-coupled device (CCD)
The solid-state image sensing element of the HDV video camera.
CNC
See computer numerical control.
computer numerical control (CNC)
The automated control of machining tools by means of a computer. A CNC machine processes a piece of material (metal, plastic, wood, ceramic, or composite) to meet specifications by following a coded programmed instruction and without a manual operator.
distortion
Optical image distortion at the CCD sensor across the maximum field of view. Expressed in percent for the dimensional error along one axis divided by the true dimension.
Drawing Exchange Format (DXF)
A computer aided design (CAD) data file format developed by Autodesk, Inc. and now also used by other companies for the export and import of CAD data.
DXF
See Data Exchange Format.
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