sl-perception
7dcdd2088a
Implements ambient-light-aware night vision mode for the D435i + IMX219
stack on the Jetson Orin Nano Super:
• light_analyser.py — histogram-based intensity FSM with hysteresis:
day → twilight → night → ir_only
• camera_controller.py — D435i IR emitter via realsense2_camera param
service + IMX219 gain/exposure via v4l2-ctl
• gpio_headlight.py — physical pin 33 headlight; Jetson.GPIO PWM
primary, sysfs on/off fallback, sim mode
• light_monitor_node.py — subscribes IMX219/IR1, publishes
/saltybot/ambient_light + /saltybot/vision_mode
• night_vision_controller_node.py — reacts to mode changes; drives
D435i emitter, IMX219 gain, headlight
• ir_slam_bridge_node.py — mono8 IR1 → rgb8 republish so RTAB-Map
keeps loop-closing in darkness
• launch/night_vision.launch.py + config/night_vision_params.yaml
• test/test_night_vision.py — 18 unit tests (18/18 pass, no ROS2 needed)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>