You are indeed right. I'm not sure how to efficiently implement a median here though, because a single frame is around 120MB large already. I assume I could/should compute the median over only a few frames to limit memory consumption and feed the result into the moving (arithmetic) average?

I'm also not entirely sure if computing the average of the non-linear "raw" sensor data which is what I did so far is a good or a bad idea / how it interacts at the endpoints of the value range.