Calibration Sequence Tool

1. Sequence

Preset Name

Zoom

Drag a block to reorder it, drag its right edge to change its length (0.5 s steps, hold Alt for 0.1 s). With a block selected: ←→ select, Alt+←→ move, +− length, Del remove.

2. Run

On screen In VR (WebXR)

Participant ID Order Seed Keep neighbouring brightness levels apart

Lead-in (s) Lead-in grey Wait for a start signal (Space, click, or VR trigger) Download the CSV when the run ends Leave VR at the end

Order for this run

Before you start

Fix the display: constant brightness (no auto-brightness, night shift or adaptive contrast), sRGB profile, HDR off. Sequence colours are sent as plain sRGB values; the actual light depends on the display.
On screen the field fills the whole window in full screen; Esc aborts. The cursor is hidden.
In VR the participant sits at the centre of a sphere painted in one colour, on a headset browser or a desktop browser with a WebXR runtime (SteamVR, Varjo Base, …). The page must be served over HTTPS or from localhost. Control the run from the desktop window; the participant can start it with the trigger.
Timings are logged per frame: time is when the frame carrying the new colour was submitted; the display adds a fixed delay of about one frame.

3. Runs

Stored in this browser only. Download what you need.

When	Participant	Mode	Sequence	Steps	Status