picamera2 and libcamera in Depth

10 Lektionen in dieser Stufe

1. The libcamera Pipeline from Sensor to Frame
   Trace an image from the sensor through the ISP to your program. · Lab: Capture a raw frame and a processed frame of the same scene and compare their metadata.
2. Camera Configurations: Main, Lores and Raw Streams
   Configure several simultaneous streams for different consumers. · Lab: Configure a full-resolution main stream plus a small lores stream and save one frame of each.
3. Manual Exposure, Gain and Colour Controls
   Set and lock camera controls for repeatable images. · Lab: Lock exposure time, analogue gain and colour gains and photograph a scene under changing light.
4. Capturing Frames as NumPy Arrays
   Access pixel data in memory and understand array shape and type. · Lab: Capture an array, print its shape, crop a region and compute its mean brightness.
5. H.264 Encoding: Hardware on Pi 4, Software on Pi 5
   Choose encoder, bitrate and resolution for your board's capabilities. · Lab: Record the same scene at three bitrates and note CPU load and file size on your model.
6. Pre-Roll Recording with a Circular Buffer
   Keep the last seconds in memory and save them when an event fires. · Lab: Record clips that start five seconds before a PIR trigger.
7. MJPEG Streaming to a Browser
   Serve live frames over HTTP with a simple Python server. · Lab: Serve a low-latency MJPEG stream and embed it in your Flask dashboard.
8. Low-Latency RTSP and WebRTC with a Media Server
   Publish an encoded stream to a media server for many viewers. · Lab: Feed H.264 into a media server container and view it in a player and a browser.
9. Night Vision with NoIR Cameras and IR Illumination
   Capture in darkness and switch settings between day and night. · Lab: Light a dark room with an IR illuminator and switch profiles by measured brightness.
10. Two Cameras at Once on Pi 5
    Run both camera connectors and synchronise captures. · Lab: Capture a simultaneous pair from two cameras and measure the time offset.

Abschlussprojekt

An event camera that records clips including the seconds before the trigger, serves a live browser stream and works day and night.

Teile für diese Stufe

• 1 × Raspberry Pi 5 set from Level 1 (Pi 4 also works)
• 1 × Camera module with autofocus (Camera Module 3 type)
• 1 × NoIR camera module
• 1 × Infrared LED illuminator board
• 1 × Second camera ribbon cable 22-pin for Pi 5
• 1 × PIR motion sensor module
• 1 × Camera mount or tripod

In jeder Lektion legst du die passenden Teile direkt in den Warenkorb. Raspberry Pi →