Automatic Camera Calibration Guide

Automatic Camera Calibration Guide

Preface

This guide details the complete auto-calibration operation for the Titan series dual/single top cameras, including movable camera calibration and top camera calibration.

This function was newly introduced in LM2.3.3. As auto-calibration relies on the movable camera, it is only available for Titan models at present.

Tools Required

  1. LaserMaker2.3.3
  2. Calibration board 

How to calibrate the camera

Video quickly

Specific steps

Notes
Before starting calibration, please confirm that the machine has established a stable communication connection with your computer. You may refer to this document for detailed steps to set up communication between the machine and PC.
TITAN Connection Method

  1. Go to Settings >> Camera >> Camera-Top>>Preview.

Signal camera

Dual camera

  1. After that, click the 'Calibration Wizard' button to start the camera calibration process. In the pop-up 'Camera Calibration Wizard' window, select the 'Auto Calibrate (Titan Only)'.

Step 1

Step 2

  1. Select your Titan model from the right drop-down box, then click Next Step.

Notes
If the content displayed on your page is incomplete, try adjusting the display scaling percentage of your screen.

Incomplete Interface Display

Adjust Display Scaling Settings

  1. Movable camera calibration.

Step1: Choose the calibration mode

Step 2: Download the calibration PDF file

Note: We recommend choosing the 'Detect Calibrate Board' option to improve the success rate.

You can skip this step if the movable camera is already calibrated or calibration will be done at a later time.

Click the 'Movable Camera Calibration Board' button and set the save path to save the calibration PDF.


Step 3: Print the calibration pattern

Step 4: Place the calibration pattern in the honeycomb bed

Print the calibration pattern on A4 paper in portrait mode.
Note: When printing the calibration pattern, set the print scale to 100% actual size. Do not scale or shrink the PDF, or the camera will fail to identify the pattern accurately.

Lay the printed calibration paper vertically (portrait mode, no landscape). Align the square pattern parallel to the machine's X/Y axes, and place the pattern near the center of the working platform rather than the edges to reserve sufficient moving space for the camera to fully scan the pattern.

Step 5: Movable Camera Focus & Alignment Calibration

Move the laser head to bring the calibration board into the view of the movable camera, then click the 'Focus' button.

Next, align the pattern center with the red crosshair and click the 'Calibrate' button.


Note: The camera detects two reference markers on the calibration pattern and scans its full field of view from right to left and top to bottom to map the camera's scale and geometric relations to the machine. The full calibration process takes approximately 6 minutes during this test. The time taken depends on the network speed and connection stability.


Step 6: Place the calibration pattern in the honeycomb bed

Step 7: Movable Camera Offset Correction

Place ≥50×50 mm material, move the laser head above it, click the 'Focus' and the 'Frame' buttons to determine the focal length and processing range, then Start Processing.


Move the movable camera over the cut mark, zoom in as needed to align the mark center with the red crosshair, click the 'Offset Correction' button, and confirm the success prompt.


  1. Top camera calibration.
Notes
Dual cameras use the same calibration method as single cameras. We will take the dual-camera configuration as an example to show the full calibration process below.  

Step1: Place the calibration board flat in the center of the honeycomb bed with the title facing up

Step 2: Close the top cover and complete autofocus

Note: Align the calibration board parallel and perpendicular to the machine axes. Ensure all clean, undamaged calibration markers are fully visible to the camera.
  

Step 3: Click the 'Auto Calibrate' button and start calibrating.

Note: The overall calibration speed depends on the communication rate between the computer and the machine.
This step took about 8 minutes in this test.


  1. Finally, export the calibration file to save the calibration parameters.

It is necessary to save and back up camera calibration files created for different devices under different software versions. When switching machines, simply import the corresponding calibration file. Additionally, if the machine's IP address changes, after reconnecting to the machine, you need to re-import the camera calibration file.

Still need help?

For specific technical questions or help requests, please open a Ticket with picture or video, so our Support team can assist you ASAP.

For the information provided in the ticket, please refer to this link：

Help Tech Support Troubleshoot Faster


End.


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