Intel RealSense Modular Component

This is a Viam module for the Intel® RealSense™ family of cameras. Registered at https://app.viam.com/module/viam/realsense.

Build and Run

To use this module, follow these instructions to add a module from the Viam Registry and select the viam:camera:realsense model from the realsense module.

Configure your Realsense Camera

Note

Before configuring your camera, you must create a robot.

Navigate to the Config tab of your robot’s page in the Viam app. Click on the Components subtab and click Create component. Select the camera type, then select the realsense model. Enter a name for your camera and click Create.

On the new component panel, copy and paste the following attribute template into your camera’s Attributes box:

{
  "sensors": ["color","depth"],
  "width_px": 640,
  "height_px": 480,
  "little_endian_depth": false,
}

Edit the attributes as applicable.

Note

For more information, see Configure a Robot.

Attributes

The following attributes are available for viam:camera:realsense cameras:

Name	Type	Inclusion	Description
sensors	list	Required	The RealSense data streams you want your robot to sense from. A list that contain the strings color and/or depth. The sensor that comes first in the list is designated the "main sensor", and is the image that gets returned by get_image calls and appears in the Control tab on the Viam app. If you would like a list of images from all listed sensors simultaneously, use get_images.
width_px	int	Optional	The width of the output images in pixels. If the RealSense cannot produce the requested resolution, the component will fail to be built.
height_px	int	Optional	The height of the output images in pixels. If the RealSense cannot produce the requested resolution, the component will fail to be built.
little_endian_depth	bool	Optional	A bool that specifies whether raw depth data should be encoded in a little-endian byte order. By default it is false, and encodes the raw depth data in a big-endian byte order.

Example configuration:

{
  "components": [
    {
      "name": "myRealSense",
      "attributes": {
        "sensors": ["color","depth"],
        "width_px": 640,
        "height_px": 480,
        "little_endian_depth": false,
      },
      "namespace": "rdk",
      "type": "camera",
      "model": "viam:camera:realsense"
    }
  ]
}

Locally installing the module

If you do not want to use the Viam Registry, for Linux distros, download the module AppImage from our servers to your robot.

sudo curl -o /usr/local/bin/viam-camera-realsense http://packages.viam.com/apps/camera-servers/viam-camera-realsense-latest-aarch64.AppImage
sudo chmod a+rx /usr/local/bin/viam-camera-realsense

If you need the AppImage associated with a specific tag, replace latest in the URL with the tag version, i.e. 0.0.X.

Then modify your robot's JSON file as follows:

  "modules": [
    {
      "type": "local",
      "name": "intel",
      "executable_path": "/usr/local/bin/viam-camera-realsense"
    }
  ],

Integration Tests

Running the tests

The repo comes with a suite of integration tests that allow one to test if the module works with an actual realsense device on the machine of interest. These integration tests are compiled into a binary and can be downloaded here:

curl -o realsense-integration-tests http://packages.viam.com/apps/camera-servers/realsense-integration-tests-latest-aarch64.AppImage
sudo chmod a+x realsense-integration-tests
./realsense-integration-tests -module /path/to/the/module

The binary takes one argument, which is the location to the module you would like to test out. Make sure only one RealSense device is connected to the machine you will be running the tests on.

Compiling the integration tests

If you would like to compile the integration tests yourself, you will need to compile the binary on the same machine you expect to run it on.

• Copy the repo to your local robot: git clone https://github.com/viamrobotics/viam-camera-realsense.git
• run make realsense-integration-tests
• run the tests with ./realsense-integration-tests -module /path/to/realsense/module

Known Supported Hardware

Support for specific hardware is known for the following devices. The table is not complete and subject to change. In order to test out the module for your specific set up, it is recommended you run the integration tests provided.

Devices	D435	D435i	D455
RPi 4B Bullseye	X
Orin Nano JetPack 5.1	X	X	X

Troubleshooting

If you get an error like "failed to set power state", or "Permission denied", you may need to install the udev rules for when the USB plugs in.

wget https://raw.githubusercontent.com/IntelRealSense/librealsense/7a7c2bcfbc03d45154ad63fa76b221b2bb9d228f/config/99-realsense-libusb.rules
sudo cp 99-realsense-libusb.rules /etc/udev/rules.d/ 
sudo udevadm control --reload-rules 
sudo udevadm trigger

You can also look at the official RealSense troubleshooting guide here.

The module takes advantage of faster USB ports. Use the (blue) USB 3.0 port on the Raspberry Pi for faster streaming and access to more resolution options.

Building The Module

You can also build it yourself using Docker and Viam canon. Use the commands

docker pull ghcr.io/viamrobotics/viam-camera-realsense:arm64
git clone https://github.com/viamrobotics/viam-camera-realsense/
cd viam-camera-realsense/
canon -arch arm64 make appimage

This will use the Docker container to compile a binary for the aarch64 architecture. The AppImage will be put in the packaging/appimages/deploy directory.

If you would like to try to gather all of the dependencies yourself and not use Docker, you will need:

• librealsense
  • git checkout and install from source.
  • be sure to use cmake flags cmake .. -DBUILD_EXAMPLES=false -DBUILD_GRAPHICAL_EXAMPLES=false -DCMAKE_BUILD_TYPE=Release
• libjpegturbo
• libprotobuf
• Viam C++ SDK
  • specifically libviamsdk, libviamapi, and libviam_rust_utils

then do make viam-camera-realsense to compile the binary, and make appimage to create the AppImage.