1. How to place the debug cloth
- Place the debugging cloth in the center position in front and behind the car: the debugging cloth should be as parallel to the vehicle as possible, and ensure that the camera can fully capture the checkerboard pattern.
- Close to the tire edge: Some systems require the reference line of the debug cloth to align with the outside of the tire to ensure calibration accuracy.
- Left, front, right and back principle: Some brands recommend placing debugging cloths in the order of "left, front, right and back".

2. Debugging process
- Automatic debugging: Many 360 panoramic systems support automatic grabbing of reference points on debugging cloth to complete calibration.
- Manual fine-tuning: If the automatic calibration is not effective, you can manually adjust the reference point of each camera (such as the 12-point calibration method).
- Data input: Data such as vehicle length and vehicle width need to be measured and entered to optimize the splicing effect.

3. Factors influencing debugging cloth
- Flatness: If the debugging cloth is not flat, it may lead to splicing errors.
- Light conditions: High light or reflection may interfere with calibration. It is recommended to debug in an environment with uniform light.
- Site size: The ideal debugging site should be at least 314 in x 275 in to ensure sufficient calibration space.