Sweep 2.4.18 — neck anchor

View & hands

Camera projection

Both views use this camera type. Perspective grows with proximity. Orthographic mode normalizes apparent palm size and will not overlay the camera pixels exactly.

Fit nearby thumb and fingertipView Show both tracked hands

First person views the hands from the opposite side. It does not track your head.

First-person camera settings

These controls apply in first-person view. Mirror remains camera-aligned.

Camera left / right (m)0Camera height (m)0Camera forward / back (m)-1.2Camera turn (degrees)180Camera tilt (degrees)0Field of view (degrees)60

Use Save starting settings below to remember this view.

Phone distance calibration

Face distance from phone (cm)40Depth movement sensitivity1

In perspective view, hold visible hands beside your face at the entered distance, then calibrate. This positions the first-person camera too. It does not detect your face.

Finger shape & starting settings

Finger thickness multiplier0.9Fingertip point inset (estimated mm)2

Thicker segments keep their tracked centre lines. Inset places the yellow point inside the tip: the visible finger extends past it. Too much inset can cause overlap.

Defaults: 1.3× thickness, 2 mm inset, 1000 ms tracking grace.

Tracking continuity

Keep hand during brief tracking loss (ms)1000

The connected non-resizing rig uses the earlier tracked segment directions. Joint attachment distances and mesh dimensions remain fixed. Depth remains estimated. Recalibrate resets depth and constant-size reference. Missing hands hold their last measured pose briefly.

Waiting for camera

No fist preset or mesh resizing. Contact assistance is disabled; tracked directions drive the joints.

Return to original lab

01 / Capture

Camera

Camera off. You can also load a sample or your own image.

Load image

Hand to detectModel hand

Freeze stores the exact frame and landmarks that produced the pose. New tracking results cannot change your edits.

Fingertip contact

Fit thumb contact with any fingertip

Yellow dots mark mesh tips; green dots and lines show model joints. Touch the thumb to any fingertip. Screen overlap is an estimated contact cue, not measured physical collision.

3D movement & stability

Move hand in 3D space Use screenshot fist bendsThumb fist proximity20% of palm width

The thumb uses the fist preset only when curled and close to the folded fingers. Smaller proximity requires a closer match. A raised thumb keeps tracking freely.

Stillness tolerance (degrees)1.5°Ignore small angle changes3°Maximum joint speed180°/s

Small changes below the angle threshold are ignored. Speed limits apply after thumb and pinch fitting. Lower speed is smoother but follows fast gestures more slowly.

Reported distance calibration (metres)

The frame outline matches the camera preview. Wrist position follows its image point; palm size fits perspective depth. Physical distance remains an estimate.

Still poses settle after 0.3 seconds. Larger movement releases the hold. Zero tolerance disables holding. Original v80 hand geometry and thumb attachments are restored. Four-finger screenshot side/twist alignment is always fixed; thumb alignment transitions from a straight relaxed thumb to your fist reference; only base knuckles and the lower thumb can spread. thumb uses your reference when making a fist.

Saved poses 0

Apply my saved poses in live modeMatch tolerance 0.18

No pose matched

Smaller tolerance needs a closer match. This is example matching, not model training. It only changes this lab.

Camera frame · same mirror as preview

Connected fixed-size hand · tracked segment directions
Direct 3D

Pose name

What moves, and what am I editing?

Each finger has three movable joints. The four fingers use MCP (knuckle), PIP (middle), DIP (tip). The thumb uses CMC (base / opposition), MCP, IP. Base joints bend and move sideways together. Middle and tip joints bend in one plane. Z twist is locked to zero at every finger joint, including the thumb. Locked values remain visible but cannot be edited.

X bends / straightens. Y moves the whole finger sideways at its base; it is locked at middle and tip joints. Z twist is locked everywhere. The colored arrows show the exact local axes for the selected joint. The thumb has its own angled frame. These are model editing axes, not measured medical joint angles. Try a small positive or negative change to see its direction. Joint positions and segment lengths stay fixed.

The wrist follows the live palm orientation. Saved poses change only finger rotations, so recognizing a fist does not freeze the wrist. Structural locks also apply to imported poses. Additional limits on unlocked axes are optional. Saved examples and limits stay in this browser; export JSON to back them up or move them to another PC.

JSON backup / paste import