Calibration Board
Calibration board is usually used for intrinsic parameter check and hand-eye calibration. This chapter introduces the types, models, and mounting methods of calibration boards.
Calibration Board Types and Models
Mech-Mind provides three types of calibration boards: BDB, CGB and OCB.
CGB
For V4 cameras.
| Model | Functional Diagrams | d (mm) | Row | Column |
|---|---|---|---|---|
CGB-020 |
|
20 |
5 |
4 |
CGB-035 |
35 |
5 |
4 |
|
CGB-050 |
50 |
5 |
4 |
Mount the Calibration Board
In the following calibration scenarios, you can mount the calibration board on the last joint of the robot.
-
Automatic Calibration in the Eye to Hand (ETH) Scenario
-
Manual Calibration in the ETH Scenario (Multiple Random Calibration Board Poses)
| For other calibration scenarios and intrinsic parameter checks, there is no need to mount the calibration board. Please place the calibration board in the center of the object plane. |
Common ways to mount the calibration board are shown below:
| Direct mounting | Mounting through the flange adapter |
|---|---|
|
|
Select the Calibration Board Model
In actual projects, select the proper calibration board according to the camera model and the actual working distance.
To determine the camera model, please refer to How to Read Camera Serial Number. If you still cannot determine the camera model, contact Mech-Mind Technical Support.
| Camera model | Working distance (mm) | Recommended model |
|---|---|---|
UHP |
300±20 |
OCB-005 |
NANO-GL |
300~600 |
CGB-020 |
NANO ULTRA-GL |
250~500 |
CGB-020 |
PRO S-GL |
500~800 |
CGB-020 |
800~1000 |
CGB-035 |
|
PRO M-GL |
1000~1500 |
CGB-035 |
1500~2000 |
CGB-050 |
|
LSR S-GL |
500~1000 |
CGB-035 |
1000~1500 |
CGB-050 |
|
LSR L-GL |
1200~3000 |
CGB-050 |
DEEP-GL |
1200~3500 |
CGB-050 |
PRO XS-GL |
300~600 |
CGB-020 |
Log S |
500~800 |
CGB-020 |
800~1000 |
CGB-035 |
|
Log M |
1000~1500 |
CGB-035 |
1500~2000 |
CGB-050 |
|
Laser L Enhanced |
1500~3000 |
CGB-050 |