Camera Matrix Capture

Multi-camera dataset capture system for neural rendering, using Teledyne DALSA industrial cameras and Revopoint dual-axis turntable.

Build your own multi-view capture rig with off-the-shelf industrial cameras and turntable equipment.

Features

• Wizard-style UI - Step-by-step workflow for beginners
• Multi-camera sync - Parallel capture with staggered timing (bandwidth-optimized)
• Bluetooth turntable control - Automated 360° capture sequences
• Real-time status - Live capture/rotation state machine with timing display
• Flexible presets - Quick 36, Detailed 72, or custom positions
• Drag-and-drop camera ordering - Reorder cameras in the UI
• TIFF output - High-quality ~35MB images per capture
• Sound notifications - Audio feedback on completion

Requirements

• Windows 10/11
• Sapera SDK (Teledyne DALSA)
• Visual Studio 2022
• .NET 8.0 SDK
• CMake 3.16+

Build

Quick Build

.\build.ps1

Or using Command Prompt:

build.bat

Manual Build

# 1. Build C++ backend DLL
mkdir build && cd build
cmake .. -G "Visual Studio 17 2022" -A x64
cmake --build . --config Release
cd ..

# 2. Build WinUI 3 frontend
cd App
dotnet build -c Release -p:Platform=x64

Output

App\bin\x64\Release\net8.0-windows10.0.19041.0\CameraMatrixCapture.exe

Usage

1. Launch CameraMatrixCapture.exe
2. Connect: Discover cameras and connect Bluetooth turntable
3. Setup: Choose capture preset (36/72 positions or custom)
4. Capture: Start automated 360° capture sequence
5. Done: View results and open output folder

Output

Images saved to neural_dataset/[session_name]/

neural_dataset/
└── session_001/
    ├── pos_001/
    │   ├── cam_01.tiff
    │   ├── cam_02.tiff
    │   └── ...
    ├── pos_002/
    │   └── ...
    └── ...

Architecture

CamMatrixCapture/
├── App/                           # WinUI 3 Frontend (C#)
│   ├── Pages/
│   │   ├── ConnectPage.xaml       # Step 1: Device connection
│   │   ├── SetupPage.xaml         # Step 2: Capture settings
│   │   ├── CapturePage.xaml       # Step 3: Capture execution
│   │   └── DonePage.xaml          # Step 4: Completion
│   ├── Dialogs/
│   │   ├── SettingsDialog.xaml    # Settings flyout
│   │   └── DebugConsoleDialog.xaml # Debug log viewer
│   └── Services/
│       └── CaptureService.cs      # P/Invoke wrapper
│
├── src/                           # C++ Backend (CaptureCore.dll)
│   ├── api/
│   │   ├── CaptureAPI.cpp         # C-style DLL exports
│   │   └── CaptureStateMachine.cpp # Capture/rotation state machine
│   ├── hardware/
│   │   └── CameraManager.cpp      # Sapera SDK integration
│   ├── bluetooth/
│   │   ├── BluetoothManager.cpp   # BLE device management
│   │   ├── BluetoothDevice.cpp    # BLE communication
│   │   └── TurntableController.cpp
│   └── utils/
│       ├── SettingsManager.cpp    # INI persistence
│       └── SessionManager.cpp     # File organization
│
├── build.bat                      # Build script (CMD)
├── build.ps1                      # Build script (PowerShell)
└── CMakeLists.txt

State Machine

The capture-rotation cycle is managed by a state machine to ensure correct synchronization:

Idle → Capturing → Rotating → Settling → Idle (repeat)

States:

• Idle: Ready for next operation
• Capturing: Cameras actively capturing images
• Rotating: Turntable moving to next position
• Settling: Waiting for turntable vibration to stop

Settings

Settings are stored in settings.ini next to the executable:

• Exposure Time: Camera exposure in microseconds
• Gain: Camera gain in dB
• Parallel Groups: Number of cameras capturing simultaneously
• Stagger Delay: Delay between camera triggers (ms)
• Output Directory: Where to save captured images

Troubleshooting

• Cameras not found: Check Sapera SDK is installed, cameras are powered and connected via GigE
• Blank images: Increase stagger delay or reduce parallel groups in Settings
• Turntable not found: Enable Bluetooth, ensure turntable is powered on
• Build fails: Ensure .NET 8.0 SDK and Visual Studio 2022 are installed

License

MIT License - Copyright (c) 2025 Shaoxuan Yin

See LICENSE for full text.