charge coupled device (CCD)
The solid-state image sensing element of the video camera.
CNC
See computer numerical control.
Computer-Aided Design file (CAD)
The .cad file extension is used for a 3D graphics file format, which is often associated with CAD (computer aided design) projects. These .cad files contain digital 2D and 3D graphics.
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.
contour illumination
An illumination method to measure the workpiece by transmitted light and different lenses, used mainly for measuring magnified contour image of a component.
D
datum
A n idealized reference feature from which another features’ orientation, position, or other characteristic is defined. Datums can be many types of features, planes, cylinders, points, centerlines, constructions or offsets from other features, anything that can be measured or established for use in locating other features.
distortion
Image distortion across the field of view. Expressed in percent for the dimensional error along one axis divided by the true dimension. Resulting measurement errors can be almost eliminated by software compensation.
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 Drawing Exchange Format.
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