Pose Library 4 Configured Poses

Explore Supported Poses

PostureSense currently recognizes configured poses using real-time body landmarks and rule-based biomechanical analysis.

Warrior II Pose - Virabhadrasana II
01 — STRENGTH & ALIGNMENT Warrior II

Warrior II Pose

VIRABHADRASANA II

Strengthens legs, arms, and shoulders. Opens hips and chest while developing single-leg stability and core focus.

Configured Rule Constraints

Front Knee Bend: 80° – 110°
Rear Knee Lock: 160° – 180°
Left Shoulder Angle: 80° – 105°
Right Shoulder Angle: 80° – 105°

Execution Steps:

  • Stand with feet wide apart (approx. 3.5 – 4 feet)
  • Turn right foot out 90°, left foot slightly inward
  • Extend arms parallel to the floor in opposite directions
  • Bend front right knee directly over right ankle to 90°
  • Keep torso upright and centered between legs
T Pose - Calibration Pose
02 — POSTURE BASELINE T Pose

T Pose

CALIBRATION POSE

Establishes anatomical baseline alignment, evaluates shoulder levelness, and tests bilateral arm extension symmetry.

Configured Rule Constraints

Left Elbow Extension: 165° – 195°
Right Elbow Extension: 165° – 195°
Left Shoulder Angle: 80° – 110°
Right Shoulder Angle: 80° – 110°
Knee Extension: 160° – 195°

Execution Steps:

  • Stand tall with feet hip-width apart and toes pointing forward
  • Extend both arms straight out to the sides horizontally
  • Keep palms facing forward or down with elbows fully locked
  • Maintain a tall, neutral spine with shoulders rolled back
  • Engage core muscles and hold steady for calibration
Tree Pose - Vrikshasana
03 — BALANCE & STABILITY Tree Pose

Tree Pose

VRIKSHASANA

Improves single-leg balance, ankle stability, thigh strength, and mental focus while testing lateral body equilibrium.

Configured Rule Constraints

Standing Leg Knee: 160° – 180°
Lifted Leg Knee: 30° – 90°

Execution Steps:

  • Shift weight onto one standing foot, rooting firmly through the heel
  • Place opposite foot against inner thigh or calf (avoid pressing knee)
  • Bring hands together in prayer position at chest height
  • Keep hips level and squared straight forward
  • Fix gaze on a still point ahead to maintain steady balance
Cobra Pose - Bhujangasana
04 — FLEXIBILITY & MOBILITY Cobra Pose

Cobra Pose

BHUJANGASANA

Strengthens the spine extensors, opens chest and lungs, and evaluates thoracic extension flexibility.

Configured Rule Constraints

Spine Extension Arch: 10° – 45°
Left/Right Hip Grounding: 150° – 180°
Knee Extension: 160° – 180°

Execution Steps:

  • Lie prone on stomach with tops of feet flat on floor
  • Place hands beneath shoulders with elbows tucked close
  • Inhale and lift chest off the mat using back muscles
  • Keep hips grounded and shoulders away from ears
  • Maintain a long neck with eyes looking gently forward
Perception Mechanics

How Pose Recognition Works

PostureSense relies on objective, rule-based 3D landmark geometry — not black-box cloud AI or streaming video servers.

/01

Camera Capture

30–60 FPS video input captured via HTML5 MediaDevices API directly in your browser.

/02

WASM Extraction

MediaPipe Tasks Vision WebAssembly extracts 33 3D body keypoints in a dedicated WebWorker.

/03

Landmark Smoothing

Exponential Moving Average (EMA) filtering removes keypoint spatial jitter and recovers missing points.

/04

Joint Geometry

3D vectors calculate exact joint angles (knees, hips, shoulders, spine, elbows) per frame.

/05

Rule Matching

Measured joint angles are matched against bounds defined in yoga_poses.json.

/06

Hold State Machine

Form quality gate triggers continuous hold timer while posture alignment is sustained.

Biomechanical Telemetry

What can be measured during practice

Every detected pose generates 8-dimensional telemetry logged upon session save.

Recognition Confidence

Percentage match index between current joint angles and target pose rule bounds.

Hold Duration (s)

Continuous seconds held with valid posture alignment before form degradation.

Bilateral Symmetry (%)

Comparison of left vs right arm extension, leg alignment, and shoulder levelness.

Center of Mass Balance (%)

Assessment of weight distribution and lateral body equilibrium over support base.

Form Stability (%)

Postural sway and spatial keypoint variance over the duration of the hold.

Range of Motion (°)

Maximum angular articulation measured across joint flexions and extensions.

Tracking Quality (%)

Confidence score indicating landmark visibility and camera detection reliability.

Overall Form Score

Weighted 8-dimensional score summary evaluating complete posture performance.

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