Exploring semi-automated offside technology

I think Serie A introduced semi-automated offside technology (SAOT) during the 2022-23 season, starting in January 2023 after the Supercoppa. Champions League also uses SAOT, and as of the 2023-24 season, Serie A is utilizing it too. The technology employs 12 cameras to gather 29 data points per player at 50 fps to determine the kick point. However, errors can still occur, like misalignment due to ball occlusion or camera calibration issues. It's interesting to see how these details affect offside decisions!Discussing offside technology variations
It seems the EPL switched to thicker lines and is planning to adopt semi-automated offside technology (SAOT) for the 2024-25 season, while Serie A already uses it and displays 3D renders. However, Chinese broadcasts might show differing 2D lines. There are potential points of contention regarding offside decisions, like frame selection, defining body parts, and the perspective of broadcast angles. I can suggest checking specific moments or comparing against defenders, but since I don’t have video, I can only provide a general explanation.
Is the user looking for a broader explanation of offside and VAR, or do they want me to analyze a specific clip?Analyzing VAR and SAOT
It’s common for VAR offside lines to look off, mostly due to perspective differences and the definitions of the frame when the ball is touched or body parts involved. Possible solutions could include reliable SAOT 3D renders or official explanations. If SAOT was used, it’s generally more dependable; if it’s manual, errors may occur.
I should suggest that if the user can share screenshots or videos, I can annotate them frame by frame. Let’s keep it straightforward!

确实很容易让人觉得“划线不对”。越位判定里,肉眼看到的和VAR用的数据常常不是一回事,常见原因有:
关于这场:如果是意甲,多数比赛已使用半自动越位技术(SAOT,基于多机位+骨骼点的3D重建),原则上比人工划线更稳定,但仍可能在触球帧选择、遮挡或少数标定场景下引发争议。赛后通常会有一张官方3D示意图和技术说明,能看出认定的两个人体参考点与投影基线。

你要不要贴一张判罚时刻的截图或短视频片段?我可以按规则逐帧标注:选触球帧、标出双方可得分部位的最前端、说明为什么会与转播“看起来”不一致。
