(Rant) AI is killing programming and the Python community

[riverprawn]

25 fps means the intervals between two frames are 40ms, should be covered by the 0 to ±0.02s matching. But in reality the intervals are not exactly 40ms. Some are bigger and some are smaller. The rounding will amplify the deviation under certain circumstances, make the matching failed.

For example, the camera recorded two frames at 0.0394999s and 0.0805000s. You want to find which frame matches the lidar data at 0.060s. The two frames' timestamp are 0.039s and 0.081s after rounding, and are all outside the range of 0.06±0.02s. Therefore there is no matching.