frame-eyes, a separate project until now, becomes gaze/tracker:
- ft-eyegrab (was fe-bufprobe) copies the eye-camera frames, read-only, out of
SteamVR's eyetracking process. It runs as the system service
frametop-eyegrab.service, which gaze/tracker/install.sh installs to
/etc/frametop with sudo. It keeps only CAP_SYS_PTRACE, CAP_DAC_READ_SEARCH, and
CAP_CHOWN, and copies frames only while /dev/shm/frametop-eyes-want is fresh,
holding none of the tracker's buffers otherwise.
- ft-eyes (was fe-trackd) runs under ft-gazed in the dev container, with
build/venv's pinned numpy and OpenCV: while Eye tracker is Own tracker, or on
the probe's lease ("eyes SECONDS"). No sudo password or fe-live script at
run time any more.
- lab/ holds the research tools (ft-eyes-score, -e2e, -record, -replay,
-session) and findings.md. Recordings live outside the repo, in
~/.local/share/frametop/eyes/captures; .gitignore catches stray frame dumps.
Its socket is now @ft_eyes, its output /dev/shm/frametop-eyes-gaze, and its state
~/.local/state/frametop/gaze/eyes. On practice1 -> practice2 the whole live path
(ft-eyes-e2e) gives 1.30 deg median and 3.18 for the worst tenth, as before the
move (1.30, 3.21).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ft-gaze reads frame-eyes' /dev/shm/frame-eyes-gaze and reports it as the source "own",
with each eye's gaze, where each lands on the screen, and its slip. The probe gets a
SteamVR / Own tracker toggle. With Own tracker on, it hides SteamVR's gaze and draws a
red dot per eye, its calibration fits fe-trackd's own calibration, and practice clicks
teach fe-trackd instead of the probe's correction.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
SteamVR's combined gaze keeps going on one eye, but it holds the lost
eye's yaw, so the gaze moves half as far sideways as the eyes do.
ft-gaze now reads each eye's tracking uncertainty and raw measurement
from eye-server.mmap. When the tracker loses an eye, ft-gazed takes the
gaze from the other one, plus the offset that eye usually shows
against both, learned while both are seen. On a recording, one eye
alone came out a median 0.8 degrees from both eyes' gaze.
Glances down at the keyboard, past every screen, aren't sent. The
pointer stays put, and eyes lost there don't count as lost.
The gaze probe gets a Headset fit mode. It shows per-eye tracking,
openness and confidence, maps where each eye gets lost, gives hints,
and has a guided check. The settings app opens it from the Gaze page
and shows how often each eye is lost. The probe can also test each eye
alone, and its side panel now collapses to a title bar so the dot
isn't hidden behind it.
Snapping to UI elements is deferred; the mouse drag is the correction.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Both mmap sets now add "eyes": the left and right eye's head-relative
direction, so the eyes can be calibrated separately (each has its own offset
between where the tracker says it points and where it looks). Nothing uses
it yet; it gets logged with every sample.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ft-gaze reads the Frame's eye tracker (SteamVR's eyetracking action and the
two gaze sets in eye-server.mmap, read only) and prints where the gaze lands
on the Frametop screens. ft-gazeprobe is a GTK playground on top of it: a
Vision Pro style calibration run, an accuracy test, refining the correction
model from logged points, and click, drag, and snap practice that learn the
tracker's error on the fly. It also follows SteamVR's eyetracking log for
restarts and the clicks SteamVR calibrates itself from, which it keeps only
in memory.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
