Images are captured by a Raspberry Pi 4 with camera module, which performs real-time image analysis. The Raspberry Pi 4 is also used to control LEDs for bright field and fluorescence imaging, and is designed to run analysis code for generating control signals (i.e. the light pattern to be projected). Furthermore, this module is configured as a node in a local ad-hoc network to which a Raspberry Pi Zero is also connected. The Raspberry Pi Zero acts as a controller for the projector and is constantly fed information from the imaging process running on the Raspberry Pi 4 through this wireless communication channel. This enables closed-loop control as properties of the system being imaged (e.g. agent location or density) can influence the light pattern being projected.
Fabrication of the DOME