mtdev smoothing/denoising
Bug #625051 reported by
Rafi
This bug affects 2 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
mtdev |
Fix Released
|
Low
|
Rafi |
Bug Description
When I try to write with my finger in xournal I get jagged lines, and when I hold a window, it bounces around a bit even when I hol my finger in place.
It would be so nice if something would filter out that jitter and smooth lines for me. Since both gesture events and normal xinput would benefit, for single and multi-touch and requires tracking (for multi-touch), it seems to me mtdev is a logical location to place to put this sort of processing.
btw, the script known as "ts_test" run without any arguments should demonstrate/measure the sorts of jitter and messy lines that are annoying me (at least for single touch).
Changed in mtdev: | |
status: | Triaged → Fix Released |
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Mtdev already contains a EWMA filter, with defaults sensible for devices with moderate signal-to-noise ratio. For this particular device, which is very noisy, it should suffice to add proper fuzz parameters in the kernel driver, and mtdev will pick them up.