Differences

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--- lmi_3d_scanner:configuring_scan_volume [2019/10/14 03:45] – [5. Set exposure] formlab
+++ lmi_3d_scanner:configuring_scan_volume [2021/01/14 02:58] (current) – [6. Calibrating] formlab
@@ Line 81: / Line 81: @@
 {{:lmi_3d_scanner:projector_focus_wiki.jpg?nolink|}}\\
 {{:lmi_3d_scanner:projector_focus_result.jpg?nolink|}}\\
-Set the projector focus.
+Set the projector focus. (Look at the actual calibration card, not the images from the cameras)
 ===== 4. Focus cameras =====
@@ Line 98: / Line 98: @@
 ===== 5. Set exposure =====
 {{:lmi_3d_scanner:exposure-settings.jpg?nolink|}}\\
-Expose the image of the cameras well by changing the projector brightness.
+Expose the image of the cameras well by changing the projector brightness. \\
 Try to minimise under and over exposure on the calibration card.
@@ Line 104: / Line 104: @@
 {{:lmi_3d_scanner:calibration_board_square_size_and_filter_settings_wiki.jpg?nolink|}}\\
 Match the size of the squares of the calibration card.\\
-Make sure sensible Filter values are set.
+Make sure sensible Filter values are set. (no documentation found on where the values are measured from. Possibly the CCD location of the camera's).
-Delete the previous calibration
+{{:lmi_3d_scanner:reset_calibration.jpg?nolink&400|}}\\
+Click "Reset Calibration" to remove the previous calibration
 {{:lmi_3d_scanner:capture-button.jpg?nolink|}}\\
 Capture shots of the calibration board. Move the calibration board to a different place for the next capture. Stay within the camera image as this will result in an invalid capture. It's not necessary to overlap the board with previous captures. Take your time and be patient.
-{{:lmi_3d_scanner:edge-detection.jpg?nolink|}}
+{{:lmi_3d_scanner:edge-detection.jpg?nolink&400|}}
 Try the following:
-  * capture a horizontal row where the board faces the cameras
+  * capture a horizontal row where the board faces the cameras:\\
-  * do the same row, but now with the board at an angle
+    {{:lmi_3d_scanner:calibration_straight.gif?nolink|}}
+  * do the same row, but now with the board at an angle:\\
+    {{:lmi_3d_scanner:calibration_angled.gif?nolink|}}
   * move the board further or closer to the camera for about 6cm and repeat the above steps
   * do this for approximately the same depth as the scanning volume is wide.
@@ Line 122: / Line 125: @@
-You will need 40 or more images for a qualitative calibration.
+You will need 40 or more images for a good quality calibration.
 {{:lmi_3d_scanner:calibrate-button.jpg?nolink|}}\\