Camera

Description

The Camera is a template class, that you can use in your own Java-project. Currently, the code is only tested with a Raspberry-Camera and the crowpi-image. You can take pictures or videos, with or without a preview.

To connect the camera, use this video. The video is mentioned on the official website. The camera class is using the bash-commands “libcamera-hello”, “libcamera-still” and “libcamera-vid”. To use them, set up the raspberry with the following Introduction

Layout

Raspberry Camera

Raspberry Camera

Code

An example on how to use the Camera-Class from the Hardware-Catalog

Camera camera = new Camera();

System.out.println("Taking a default picture");
camera.recordPicture();

System.out.println("Taking a pic with different parameters");
var config = Camera.newPictureConfigBuilder()
    .outputPath("/home/pi/Pictures/")
    .delay(3000)
    .disablePreview(true)
    .encoding(Camera.PicEncoding.PNG)
    .useDate(true)
    .quality(93)
    .width(1280)
    .height(800)
    .build();

camera.recordPicture(config);

System.out.println("Waiting for camera to take pic");
delay(Duration.ofSeconds(4));

System.out.println("Taking a video for 3 seconds");
var vidconfig = Camera.newVidConfigBuilder()
    .outputPath("/home/pi/Videos/")
    .recordTime(3000)
    .useDate(true)
    .build();
camera.recordVideo(vidconfig);

camera.reset();

Further project ideas

  • Use a camera and a motion-sensor to create a wildlife-camera
  • Use a camera to monitor the entrance of a building, by publishing the preview of the camera to a webserver