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Cyberware designs, manufactures, and sells standard and custom 3D scanning systems and software.

How to Zero the Scanner

This page will list the steps required to zero your scanner using CyScan. Please note that you will need special equipment for the calibration, along with a solid working-knowledge of Cyscan procedures and the Administrator password for the computer.

Required Tools

Preparation

There are a few preparatory steps to consider prior to setting the offset to zero the scanner. Do not skip these steps, as they greatly influence the final outcome of the zeroing procedure.

  1. Open the configuration file in a text editor. The configuration file is located in the '...\CyScan\cfg\' folder and has the naming format of XX-####-factory.txt.

  2. Verify that the home position is set properly. This step is not necessary if you are zeroing a Head & Face (PS) scanner.

  3. Secure the cylinder to the motion platform using a few pieces of clay. Try to center the cylinder over the axis of rotation.

Procedure

  1. Open CyScan.

  2. Select the appropriate scanner, if necessary.

  3. Home the scanner by selecting Scanner | Home...

  4. Click the 'Setup' button. This action will open the scan setup window.

  5. Adjust the following settings in the scan setup window:

    Mode:Circular
    Texture:None
    Arc:360
    Pitch:1.0

  6. Click the 'Accept' button.

  7. Scan the calibration cylinder using the settings from above by clicking the green Scan button.

  8. Wait for the scan to complete, then select Options | Tcl Console... to open the Tcl console.

  9. Type this command into the Tcl console:

    vw cc

    A small window will open.

  10. In the top section of the calibration window, you'll see a text entry area labelled Enter Target Diameter. Type the average diameter of the calibration cylinder into the Target Diameter area. The diameter MUST be consistent to 0.1mm across the entire cylinder. The diameter should be entered in millimeters (ie. 120.04).

  11. Set the viewing mode to Smooth Shaded Surface by selecting View | Smooth Shaded Surface.

  12. Use ALT+Left Mouse Button to click on a point in the BOTTOM 1/5 of the cylinder (within the colored area pictured below).

[Bottom 1/5th]
Select Within the Colored Area

  1. Use ALT+Left Mouse Button to click on a point in the TOP 1/5 of the cylinder (within the colored area pictured below).

[Top 1/5th]
Select Within the Colored Area

  1. Locate the following variables in your configuration file (opened in the Preparation section of this document):

    optab op0 set zoffset
    optab op0 set rotationX

  2. Take note of the values in the Calibration window. It will tell you the current values, the amount of the adjustment, and the CHANGE TO values.

  3. Copy the Change to value from the Calibration window into your configuration file (zoffset, then rotationX).

  4. Save the configuration file.

  5. Exit CyScan.

  6. Repeat steps 7-18 TWO TIMES to ensure that you have the most accurate settings.