Get a list of available cameras on the NVIDIA hardware
returns a table containing the name, Linux® device number, and available pixel formats for all the cameras detected on the
NVIDIA® target hardware. The
camlist = getCameraList(
getCameraList function lists cameras
connected to both the USB and camera peripheral interfaces (CSI) of the target board.
Capture Images from the Onboard Camera of an NVIDIA Jetson Platform
You can connect from the MATLAB® software to the onboard CSI camera connected to an NVIDIA platform and capture images from this camera.
Create a live hardware connection from the MATLAB software to the NVIDIA hardware by using the
jetson function. To create a live hardware connection object, provide the host name or IP address, user name, and password of the target board. For example,
hwobj = jetson('jetson-board-name','ubuntu','ubuntu');
To find the camera name, use the
camlist = getCameraList(hwobj)
camlist = 2×3 table Camera Name Video Device Available Resolutions ______________________________ _____________ ____________________________________ "vi-output, ov5693 2-0036" "/dev/video0" "[1280 720],[2592 1458],[2592 1944]" "Microsoft LifeCam Cinema(TM)" "/dev/video1" "(View resolutions)"
If the function does not list a USB based camera, try reconnecting the USB webcam
and run the
updatePeripheralInfo function. This function tries to scan the
available webcams on the target when there is an addition or deletion.
Create a camera object,
cam using the name of the camera from the list and a supported resolution. If there are multiple cameras with the same name, use the
'VideoDevice' argument to identify a camera by its Linux device number. The
cam object has the following camera properties.
cam = camera(hwobj,"vi-output, ov5693 2-0036",[2592 1944])
cam = camera with properties: Name: 'vi-output, ov5693 2-0036' ImageSize: [2592 1944] VideoDevice: '/dev/video0'
To capture a frame of image from this camera and display it in MATLAB, use the following commands.
img = snapshot(cam); figure(); imagesc(img); drawnow;
To change the resolution of the image capture, you must clear the
camera object by using the
clear function and then use the
camera function to connect to the camera again.
clear cam; cam = camera(hwobj,"vi-output, ov5693 2-0036",[1280 720]);
camlist — List of available cameras
Table containing the list of cameras that the software detects on the target hardware. the table contains the name, Linux device number, and available pixel formats for all the cameras. For example,
camlist = 2×3 table Camera Name Video Device Pixel Formats ______________________________ _____________ _____________ "vi-output, ov5693 2-0036" "/dev/video0" "BG10" "Logitech Webcam C925e" "/dev/video0" "YUYV,MJPG"
When you click on View resolutions, you can view the supported resolutions.
Resolutions: [1280 720],[1280 800],[160 120],[176 144], ... [320 240],[352 288],[416 240],[424 240],[640 360], ... [640 480],[800 448],[800 600],[960 544]
For information on accessing data in tables, see Access Data in Tables.
Introduced in R2019a
- Sobel Edge Detection on NVIDIA Jetson Nano Using Raspberry Pi Camera Module V2
- Getting Started with the MATLAB Coder Support Package for NVIDIA Jetson and NVIDIA DRIVE Platforms
- Deploy and Run Sobel Edge Detection with I/O on NVIDIA Jetson Nano
- Build and Run an Executable on NVIDIA Hardware
- Stop or Restart an Executable Running on NVIDIA Hardware
- Run Linux Commands on NVIDIA Hardware