File – Import – Digitizer – Easy Align

nCalibration to Facilitate Automatic Marker Recognition

In the Easy Align, position alignment is carried out based on the marker information gotten from the markers affixed to the object to be measured. The program identifies markers by color patterns. Under some scan lighting conditions, however, the program is unable to distinguish the markers correctly. Accord- ingly, adjustment is necessary to carry out by implementing calibration of the White Balance adjustment and Color Chart under the same lighting conditions as those used for the actual scan in order to get stable and correct marker information, as you will use for scanning the marked object.

The calibration procedure described below generates the reference file. Once the file has been created, the program will use it as reference when detecting markers from the scanned images.

Memo

In performing calibration, always be sure to attach the same lens that will be used during the actual scan of the object to be measured.

Chapter 2

File

Menu

nVIVID 910 White Balance Adjustment

Because the Easy Align command must automatically detect the markers adhered to the scanned object, lighting conditions are of critical important. This means that it is necessary to adjust the white balance at the VIVID 910 unit before using the command, and it is important to keep the illumination conditions constant during measurements.

Note

The Easy Align command cannot be used if you are working near a window exposed to the midday sun, or if you are using a tungsten-color fluorescent light source.

Memo

The recommended light source is a daylight-colored fluorescent lamp with a brightness that is appropriate for a typical office environment (about 500 lux).

Ref. For information about how to carry out white-balance adjustment, refer to page 43, in the VIVID 910 unit’s Instruction Manual.

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