hexa-flir-demo

Demo on how to acquire from multiple FLIR cameras using bonsai and encoding using FFMPEG

Deployment

To deploy the Bonsai code, run ./bonsai/setup.cmd. This small script will download and regenerate the current bonsai environment (see tutorial for further details.)

Prerequisites

These should only need to be installed once on a fresh new system, and are not required if simply refreshing the install or deploying to a new folder.

• Windows 10 or 11
• Visual Studio Code (highly recommended for editing code scripts and git commits)
• Git for Windows (highly recommended for cloning and manipulating this repository)
• .NET Framework 4.7.2 Developer Pack (required for intellisense when editing code scripts)
• Visual C++ Redistributable for Visual Studio 2012 (native dependency for OpenCV)
• Spinnaker SDK 1.29.0.5 (device drivers for FLIR cameras)
  • On FLIR website: Download > archive > 1.29.0.5 > SpinnakerSDK_FULL_1.29.0.5_x64.exe
• FFMPEG with libx264 (required for encoding video)
  • Extract the zip file to C:\ffmpeg
  • Add C:\ffmpeg\bin to the system PATH environment variable
  • If you need to unlock the maximum number of simultaneous nvenc encoding sessions follow these instructions

Quick start

• Open Bonsai (./bonsai/Bonsai.exe)
• Open the workflow (./src/main.bonsai)
• Define the relevant properties in the property grid on the right:

• Camera<X>: The serial number of the camera to instantiate (dropdown list)
• Extension: The file extension to use for the output video file (e.g. .mp4)
• FrameRate: The frame rate to use for the output video file (e.g. 30)
• OutpuArguments: The output arguments to use for the output video file encoding (e.g. -crf 23 -preset fast)

• RootPath: The root path to use for the output video file (e.g. C:\Data). Data will be saved in the format: <RootPath>\<Date>\<CameraSerial>.<Extension>

  • Click the Start button in the top left corner of the bonsai window
  • For each camera two files will be logged. The video and the metadata.