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https://s3-us-west-2.amazonaws.com/secure.notion-static.com/fc9aea63-a408-4af6-8781-21570eb2c149/Question-mark---cropped.png

<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/b051736e-924f-4eab-8588-1c694c17fff9/Blank_-_Spacer.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/b051736e-924f-4eab-8588-1c694c17fff9/Blank_-_Spacer.png" width="40px" /> During and after the calibration process you should not adjust camera lenses.

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<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/b051736e-924f-4eab-8588-1c694c17fff9/Blank_-_Spacer.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/b051736e-924f-4eab-8588-1c694c17fff9/Blank_-_Spacer.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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<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/b051736e-924f-4eab-8588-1c694c17fff9/Blank_-_Spacer.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/b051736e-924f-4eab-8588-1c694c17fff9/Blank_-_Spacer.png" width="40px" /> During calibration it is desirable to refocus the projector. To defocus a projector it is easier to use the zoom ring instead of the focus ring. For Acer projectors move zoom ring from one extreme position to the other, and the projector will be defocused; return it to the original position after calibration.

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Full calibration dialog box opens automatically after the Configuration wizard, or manually from the menu Configuration → Full calibration.

Calibration procedure:

  1. In the dropdown list the previously selected (in configuration wizard) calibration plate parameters are chosen. Compare them to the actual calibration field, choose from the list, if needed. Focal distance of the lenses is detected automatically, and is only allowed to change by technical support specialist when calibration problems occur.

    <aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/06ae7e8b-6cef-498e-988b-b1606a720431/Exclamation-mark---cropped.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/06ae7e8b-6cef-498e-988b-b1606a720431/Exclamation-mark---cropped.png" width="40px" /> Check that the size of the plate, specified in the software, matches the one you use. Incorrectly specified plate size can result in distorted 3D models.

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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 controller. 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.

    <aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/06ae7e8b-6cef-498e-988b-b1606a720431/Exclamation-mark---cropped.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/06ae7e8b-6cef-498e-988b-b1606a720431/Exclamation-mark---cropped.png" width="40px" />

    Some lighting conditions can create a large shiny spot on the calibration plate, which disrupts the calibration process. In this case, activate the Black projection mode and increase the exposure value so that markers are visible (calibration will be done without projector light).

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  3. If the plate is placed incorrectly, a message will appear. Correct the placement and repeat the capture.

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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.

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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: