Stage 0

Camera diagnostic

Checking security… Browser tab
Camera is stopped Select a camera and requested mode, then tap Start camera. Start with 1080p. Marker scanning remains a Stage 2 feasibility test.
— × — — FPS 00:00

Capture

Camera controls

No camera requested yet.

Frame and clip metadata is retained in Export JSON report. This avoids losing evidence when Android blocks a second automatic download. The solo test gives you ten seconds to reach a marked position, then records for ten seconds. The group sample saves detections only—no image or video—and gives the class five seconds to get ready. Set the controlled-test fields before each capture; empty-room captures automatically omit card expectations.

Stage 2 feasibility

AprilTag 36h11 marker test

Camera must be running.

A read is accepted only after 400 ms of continuous tag36h11, Hamming 0, sufficient confidence, at least 15 tag-edge pixels, and an orientation within 20° of a quarter turn. The table and overlay still show the observed answer for a rejected small tag. A/B/C/D mapping was calibrated on the physical Imago on 2026-08-28.

Detector
Stopped
Detection time
—
Tags this frame
0
Processing frame
—
IDObserved answerRaw → snappedAccepted MarginHammingMin edgePerspectiveStatus
No marker observations yet.

Observed, not assumed

Live diagnostics

Secure context
—
Camera permission
—
Actual resolution
—
Reported frame rate
—
Measured rendered FPS
—
Track state
Stopped
Visibility
—
Display mode
—
Wake lock
Inactive
Device label
—

Lifecycle evidence

Event log