115 lines
5.0 KiB
Markdown
115 lines
5.0 KiB
Markdown
# Domain-Driven Design: WiFi-DensePose Domain Model
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## Bounded Contexts
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### 1. Signal Domain
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**Purpose**: Raw CSI data acquisition and preprocessing
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**Aggregates**:
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- `CsiFrame`: Raw CSI measurement from WiFi hardware
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- `ProcessedSignal`: Cleaned and feature-extracted signal
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**Value Objects**:
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- `Amplitude`: Signal strength measurements
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- `Phase`: Phase angle measurements
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- `SubcarrierData`: Per-subcarrier information
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- `Timestamp`: Measurement timing
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**Domain Services**:
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- `CsiProcessor`: Preprocesses raw CSI data
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- `PhaseSanitizer`: Unwraps and cleans phase data
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- `FeatureExtractor`: Extracts signal features
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### 2. Pose Domain
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**Purpose**: Human pose estimation from processed signals
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**Aggregates**:
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- `PoseEstimate`: Complete DensePose output
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- `InferenceSession`: Neural network session state
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**Value Objects**:
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- `BodyPart`: Labeled body segment (torso, arms, legs, etc.)
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- `UVCoordinate`: Surface mapping coordinate
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- `Keypoint`: Body joint position
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- `Confidence`: Prediction confidence score
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**Domain Services**:
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- `ModalityTranslator`: CSI → visual feature translation
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- `DensePoseHead`: Body part segmentation and UV regression
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### 3. Streaming Domain
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**Purpose**: Real-time data delivery to clients
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**Aggregates**:
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- `Session`: Client connection with history
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- `StreamConfig`: Client streaming preferences
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**Value Objects**:
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- `WebSocketMessage`: Typed message payload
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- `ConnectionState`: Active/idle/disconnected
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**Domain Services**:
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- `StreamManager`: Manages client connections
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- `BroadcastService`: Pushes updates to subscribers
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### 4. Storage Domain
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**Purpose**: Persistence and retrieval
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**Aggregates**:
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- `Recording`: Captured CSI session
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- `ModelArtifact`: Neural network weights
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**Repositories**:
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- `SessionRepository`: Session CRUD operations
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- `RecordingRepository`: Recording storage
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- `ModelRepository`: Model management
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### 5. Hardware Domain
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**Purpose**: Physical device management
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**Aggregates**:
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- `Device`: WiFi router/receiver
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- `Antenna`: Individual antenna configuration
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**Domain Services**:
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- `DeviceManager`: Device discovery and control
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- `CsiExtractor`: Raw CSI extraction
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## Context Map
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```
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┌─────────────────────────────────────────────────────────────┐
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│ WiFi-DensePose │
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├─────────────────────────────────────────────────────────────┤
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│ │
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│ ┌──────────────┐ ┌──────────────┐ ┌─────────────┐ │
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│ │ Hardware │────▶│ Signal │────▶│ Pose │ │
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│ │ Domain │ │ Domain │ │ Domain │ │
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│ └──────────────┘ └──────────────┘ └─────────────┘ │
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│ │ │ │ │
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│ │ │ │ │
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│ ▼ ▼ ▼ │
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│ ┌──────────────────────────────────────────────────────┐ │
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│ │ Storage Domain │ │
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│ └──────────────────────────────────────────────────────┘ │
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│ │ │ │ │
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│ ▼ ▼ ▼ │
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│ ┌──────────────────────────────────────────────────────┐ │
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│ │ Streaming Domain │ │
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│ └──────────────────────────────────────────────────────┘ │
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│ │
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└─────────────────────────────────────────────────────────────┘
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```
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## Ubiquitous Language
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| Term | Definition |
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|------|------------|
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| CSI | Channel State Information - WiFi signal properties |
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| Subcarrier | Individual frequency component in OFDM |
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| Phase Unwrapping | Correcting 2π phase discontinuities |
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| DensePose | Dense human pose estimation with UV mapping |
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| Modality Translation | Converting CSI features to visual features |
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| Body Part | One of 15 labeled human body segments |
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| UV Mapping | 2D surface parameterization of 3D body |
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