<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/33e87c99-20a7-4a4c-9dba-6f7dbb41e6a7/blank.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/33e87c99-20a7-4a4c-9dba-6f7dbb41e6a7/blank.png" width="40px" /> Calibration should be performed in the same light, in which an object will be scanned. If there is too much change of level in lighting conditions it is necessary to recalibrate the system. It is not allowed to carry the calibration procedure on direct sunlight.
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The full calibration dialogue can be accessed from Calibration → Calibrate menu.
Calibration procedure:
1. In the drop-down list choose the correct calibration plate size, specified on the back side of the plate, or add a new one.
<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/33e87c99-20a7-4a4c-9dba-6f7dbb41e6a7/blank.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/33e87c99-20a7-4a4c-9dba-6f7dbb41e6a7/blank.png" width="40px" /> Make sure that the plate size specified in the software matches the actual plate size written on its back side. Incorrect size may cause errors and geometric distortions on meshes.
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It is possible that camera images in the software will be swapped or flipped from the start. In this case, go to Hardware settings -> Cameras menu and use Rotate and Swap cameras buttons to set the images in proper positions.
<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/33e87c99-20a7-4a4c-9dba-6f7dbb41e6a7/blank.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/33e87c99-20a7-4a4c-9dba-6f7dbb41e6a7/blank.png" width="40px" /> Camera image interpolation can be turned on and off in Hardware settings → Cameras using Preview smoothing option. In some cases interpolation can make it easier to determine if the image is sharp or not.
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2. In accordance with the text prompt and symbol image install the calibration plate in the desired position. The brightness of the images of calibration plate can be adjusted with exposure slider. You should not allow very dark images or images with excessive brightness areas. Press the Capture button. Original plate position - the position at the working distance from the scanner (marking on the view from cameras matches the markers on the plate), the cross is projected on the central marker.
Small vertical discrepancies between the blue lines and field marks are acceptable and do not affect the quality of the setting. For large mismatches, it is recommended to adjust the vertical tilt angle of the scanning module relative to the calibration field.
3. If the plate placement is incorrect, an error message will appear. Correct the placement and repeat the step.
The new detection algorithm allows calibration in the absence of several calibration field markers.
The absence of six large markers and three central ones is not allowed, because the orientation of the calibration field is detected and determined by them. It is not allowed to have two control corner markers, the center-to-center distance between which is nominal when measuring the deviations of each calibration step.
The absence of no more than 40% of markers is allowed, subject to the presence of those noted above.
In case if not all required marks are found on the image, you will also see an error message. It may mean the following:
