A complete end-to-end demonstration in which we collect training data in Unity and use that data to train a deep neural network to predict the pose of a cube. This model is then deployed in a simulated robotic pick-and-place task.

Unity Technologies

Last update: Dec 24, 2022

Related tags

Overview

Object Pose Estimation Demo

This tutorial will go through the steps necessary to perform pose estimation with a UR3 robotic arm in Unity. You’ll gain experience integrating ROS with Unity, importing URDF models, collecting labeled training data, and training and deploying a deep learning model. By the end of this tutorial, you will be able to perform pick-and-place with a robot arm in Unity, using computer vision to perceive the object the robot picks up.

Want to skip the tutorial and run the full demo? Check out our Quick Demo.

Want to skip the tutorial and focus on collecting training data for the deep learning model? Check out our Quick Data-Collection Demo.

Note: This project has been developed with Python 3 and ROS Noetic.

Table of Contents

Part 1: Create Unity scene with imported URDF
Part 2: Setting up the scene for data collection
Part 3: Data Collection and Model Training
Part 4: Pick-and-Place

Part 1: Create Unity Scene with Imported URDF

This part includes downloading and installing the Unity Editor, setting up a basic Unity scene, and importing a robot. We will import the UR3 robot arm using the URDF Importer package.

Part 2: Setup the Scene for Data Collection

This part focuses on setting up the scene for data collection using the Unity Computer Vision Perception Package. You will learn how to use Perception Package Randomizers to randomize aspects of the scene in order to create variety in the training data.

If you would like to learn more about Randomizers, and apply domain randomization to this scene more thoroughly, check out our further exercises for the reader here.

Part 3: Data Collection and Model Training

This part includes running data collection with the Perception Package, and using that data to train a deep learning model. The training step can take some time. If you'd like, you can skip that step by using our pre-trained model.

To measure the success of grasping in simulation using our pre-trained model for pose estimation, we did 100 trials and got the following results:

	Success	Failures	Percent Success
Without occlusion	82	5	94
With occlusion	7	6	54
All	89	11	89

Note: Data for the above experiment was collected in Unity 2020.2.1f1.

Part 4: Pick-and-Place

This part includes the preparation and setup necessary to run a pick-and-place task using MoveIt. Here, the cube pose is predicted by the trained deep learning model. Steps covered include:

Creating and invoking a motion planning service in ROS
Sending captured RGB images from our scene to the ROS Pose Estimation node for inference
Using a Python script to run inference on our trained deep learning model
Moving Unity Articulation Bodies based on a calculated trajectory
Controlling a gripping tool to successfully grasp and drop an object.

Support

For general questions, feedback, or feature requests, connect directly with the Robotics team at [email protected].

For bugs or other issues, please file a GitHub issue and the Robotics team will investigate the issue as soon as possible.

More from Unity Robotics

Visit the Robotics Hub for more tutorials, tools, and information on robotics simulation in Unity!

License

Apache License 2.0

Comments

Do I have the possibility to run the training by google colab?

Because of not being privileged with a good machine to work the training of CNN Vgg 16, I would like to run part 3 of the tutorial with the graphics card of google. Is it possible to run in that environment? If yes could explain me in the best possible way.

Thanks :)

opened by RockStheff 14
Not compatible with latest perception sdk build 0.8.0-preview.3

While importing scene, PoseEstimationScenario.cs has errors: 1. Assets/TutorialAssets/Scripts/PoseEstimationScenario.cs(27,26): error CS0507: 'PoseEstimationScenario.isIterationComplete': cannot change access modifiers when overriding 'protected' inherited member 'ScenarioBase.isIterationComplete' 2. Assets/TutorialAssets/Scripts/PoseEstimationScenario.cs(28,26): error CS0507: 'PoseEstimationScenario.isScenarioComplete': cannot change access modifiers when overriding 'protected' inherited member 'ScenarioBase.isScenarioComplete' 3. Assets/TutorialAssets/Scripts/PoseEstimationScenario.cs(10,14): error CS0534: 'PoseEstimationScenario' does not implement inherited abstract member 'ScenarioBase.isScenarioReadyToStart.get'

Modified the file to fix these errors and generated data. Noticed that metrics.json are not being created only captures.json are. When starting training, it gives an error in between looking for metrics data. Had to revert back 0.7.0-preview.2 build to regenerate data for training.

Can this be updated to be compatible with perception 0.8.0-preview.3 (or the latest) build. It is suspected that the previous builds had some bug in them which gave erroneous bounding box data which led to poor training results for pose estimation.

opened by arunabaijal 12
Problems in step 2 of the tutorial - Add and Set Up Randomizers

Hi there, I was trying to follow the steps of the tutorial, and I came across an impasse. More specifically, in Part 2, The moment that I search the scripts in c#, to add them in the game Object "Simulation Scenario", appears in the search bar as "not found". -> At this stage!

I tried to test in different versions of Unity editor, and did not succeed. Starting from the topic "Domain Randomization" in some C# scripts are not being recognized as a component in a given Game Object. Could you steer me somehow??? Thank you in advance.

opened by RockStheff 6
fixed gpu error
#52 modification still cause following error. -> Error processing request: can't convert cuda:0 device type tensor to numpy. Use Tensor.cpu() to copy the tensor to host memory first.

So we need to convert output type to cpu from gpu.

Note: If you use docker environment, please add --gpus all option.

docker run -it --rm --gpus all -p 10000:10000 -p 5005:5005 unity-robotics:pose-estimation /bin/bash

You can also use nvidia-smi command in docker whether gpu is enable or not.
opened by adakoda 5
How to add custom messages to the ROS-Unity communication

It would be great if you could briefly show us how to add custom ROS messages to the system. For example I'm trying to stream camera images from Unity to ROS.

opened by tensarflow 5

Pose Estimation not working correctly

Describe the bug

The pose estimation is not executed correctly. I get an error regarding model weights and input not being on the same device. When I change this line to this

    device = torch.device("cpu")

it works fine.

To Reproduce

Used the demo Unity project, therefore did not everything in the 4 readme's.

Console logs / stack traces

[ERROR] [1640807467.034139]: Error processing request: Input type (torch.cuda.FloatTensor) and weight type (torch.FloatTensor) should be the same
['Traceback (most recent call last):\n', '  File "/opt/ros/noetic/lib/python3/dist-packages/rospy/impl/tcpros_service.py", line 633, in _handle_request\n    response = convert_return_to_response(self.handler(request), self.response_class)\n', '  File "/home/ensar/Robotics-Object-Pose-Estimation/ROS/src/ur3_moveit/scripts/pose_estimation_script.py", line 96, in pose_estimation_main\n    est_position, est_rotation = _run_model(image_path)\n', '  File "/home/ensar/Robotics-Object-Pose-Estimation/ROS/src/ur3_moveit/scripts/pose_estimation_script.py", line 52, in _run_model\n    output = run_model_main(image_path, MODEL_PATH)\n', '  File "/home/ensar/Robotics-Object-Pose-Estimation/ROS/src/ur3_moveit/src/ur3_moveit/setup_and_run_model.py", line 138, in run_model_main\n    output_translation, output_orientation = model(torch.stack(image).reshape(-1, 3, 224, 224))\n', '  File "/usr/local/lib/python3.8/dist-packages/torch/nn/modules/module.py", line 727, in _call_impl\n    result = self.forward(*input, **kwargs)\n', '  File "/home/ensar/Robotics-Object-Pose-Estimation/ROS/src/ur3_moveit/src/ur3_moveit/setup_and_run_model.py", line 54, in forward\n    x = self.model_backbone(x)\n', '  File "/usr/local/lib/python3.8/dist-packages/torch/nn/modules/module.py", line 727, in _call_impl\n    result = self.forward(*input, **kwargs)\n', '  File "/usr/local/lib/python3.8/dist-packages/torchvision/models/vgg.py", line 43, in forward\n    x = self.features(x)\n', '  File "/usr/local/lib/python3.8/dist-packages/torch/nn/modules/module.py", line 727, in _call_impl\n    result = self.forward(*input, **kwargs)\n', '  File "/usr/local/lib/python3.8/dist-packages/torch/nn/modules/container.py", line 117, in forward\n    input = module(input)\n', '  File "/usr/local/lib/python3.8/dist-packages/torch/nn/modules/module.py", line 727, in _call_impl\n    result = self.forward(*input, **kwargs)\n', '  File "/usr/local/lib/python3.8/dist-packages/torch/nn/modules/conv.py", line 423, in forward\n    return self._conv_forward(input, self.weight)\n', '  File "/usr/local/lib/python3.8/dist-packages/torch/nn/modules/conv.py", line 419, in _conv_forward\n    return F.conv2d(input, weight, self.bias, self.stride,\n', 'RuntimeError: Input type (torch.cuda.FloatTensor) and weight type (torch.FloatTensor) should be the same\n']

Expected behavior

A working pose estimation.

Environment (please complete the following information, where applicable):

Unity Version: Unity 2020.2.7f1: The demo project was 2020.2.6f1 an older version.
Unity machine OS + version: Ubuntu 20.04
ROS machine OS + version: Ubuntu 20.04, ROS Noetic
ROS–Unity communication: I installed the ROS environment as described in Part 0
Package branches or versions: Version 0.8.0-preview.3 - March 24, 2021

opened by tensarflow 5

Use TGS solver
Proposed change(s)

Ignore the collisions on the inner knuckles so that the TGS solver will work.

Fix a bug related to Ubuntu package installation when building the docker image. [Issue]

Types of change(s)

[x] Bug fix

[ ] New feature

[ ] Code refactor

[ ] Documentation update

[x] Other: enable to use TGS solver

Testing and Verification

Tested the Pose Estimation Quick Demo with the TGS solver

Test Configuration:

Unity Version: Unity 2020.2.6f1

https://user-images.githubusercontent.com/56408141/120538136-f8b62a80-c39a-11eb-854d-b00a9acfc77e.mov

Checklist

[x] Ensured this PR is up-to-date with the target branch

[x] Followed the style guidelines as described in the Contribution Guidelines

[x] Added tests that prove my fix is effective or that my feature works

[x] Updated the Changelog and described changes in the Unreleased section

[x] Updated the documentation as appropriate

Other comments
opened by peifeng-unity 5
Could NOT find ros_tcp_endpoint

In Pick-and-Place with Object Pose Estimation: Quick Demo, Set Up the ROS Side, Step2. use "docker build -t unity-robotics:pose-estimation -f docker/Dockerfile ." and show error. What should I do? Thanks!

E:\UnityProjects\2020\Robotics-Object-Pose-Estimation>docker build -t unity-robotics:pose-estimation -f docker/Dockerfile . [+] Building 14.2s (17/18) => [internal] load build definition from Dockerfile 0.1s => => transferring dockerfile: 1.41kB 0.0s => [internal] load .dockerignore 0.0s => => transferring context: 2B 0.0s => [internal] load metadata for docker.io/library/ros:noetic-ros-base 5.1s => [internal] load build context 2.0s => => transferring context: 110.51MB 1.9s => [ 1/14] FROM docker.io/library/ros:noetic-ros-base@sha256:68085c6624824d5ad276450d21377d34dccdc75785707f244a9 0.0s => CACHED [ 2/14] RUN sudo apt-get update && sudo apt-get install -y vim iputils-ping net-tools python3-pip ros- 0.0s => CACHED [ 3/14] RUN sudo -H pip3 --no-cache-dir install rospkg numpy jsonpickle scipy easydict torch==1.7.1+cu 0.0s => CACHED [ 4/14] WORKDIR /catkin_ws 0.0s => CACHED [ 5/14] COPY ./ROS/src/moveit_msgs /catkin_ws/src/moveit_msgs 0.0s => CACHED [ 6/14] COPY ./ROS/src/robotiq /catkin_ws/src/robotiq 0.0s => CACHED [ 7/14] COPY ./ROS/src/ros_tcp_endpoint /catkin_ws/src/ros_tcp_endpoint 0.0s => CACHED [ 8/14] COPY ./ROS/src/universal_robot /catkin_ws/src/universal_robot 0.0s => [ 9/14] COPY ./ROS/src/ur3_moveit /catkin_ws/src/ur3_moveit 1.1s => [10/14] COPY ./docker/set-up-workspace /setup.sh 0.1s => [11/14] COPY docker/tutorial / 0.1s => [12/14] RUN /bin/bash -c "find /catkin_ws -type f -print0 | xargs -0 dos2unix" 1.0s => ERROR [13/14] RUN dos2unix /tutorial && dos2unix /setup.sh && chmod +x /setup.sh && /setup.sh && rm /setup.sh 4.8s

[13/14] RUN dos2unix /tutorial && dos2unix /setup.sh && chmod +x /setup.sh && /setup.sh && rm /setup.sh: #17 0.402 dos2unix: converting file /tutorial to Unix format... #17 0.406 dos2unix: converting file /setup.sh to Unix format... #17 1.304 -- The C compiler identification is GNU 9.3.0 #17 1.548 -- The CXX compiler identification is GNU 9.3.0 #17 1.567 -- Check for working C compiler: /usr/bin/cc #17 1.694 -- Check for working C compiler: /usr/bin/cc -- works #17 1.696 -- Detecting C compiler ABI info #17 1.779 -- Detecting C compiler ABI info - done #17 1.799 -- Detecting C compile features #17 1.800 -- Detecting C compile features - done #17 1.806 -- Check for working CXX compiler: /usr/bin/c++ #17 1.895 -- Check for working CXX compiler: /usr/bin/c++ -- works #17 1.897 -- Detecting CXX compiler ABI info #17 1.987 -- Detecting CXX compiler ABI info - done #17 2.007 -- Detecting CXX compile features #17 2.008 -- Detecting CXX compile features - done #17 2.376 -- Using CATKIN_DEVEL_PREFIX: /catkin_ws/devel #17 2.377 -- Using CMAKE_PREFIX_PATH: /opt/ros/noetic #17 2.377 -- This workspace overlays: /opt/ros/noetic #17 2.408 -- Found PythonInterp: /usr/bin/python3 (found suitable version "3.8.5", minimum required is "3") #17 2.409 -- Using PYTHON_EXECUTABLE: /usr/bin/python3 #17 2.409 -- Using Debian Python package layout #17 2.447 -- Found PY_em: /usr/lib/python3/dist-packages/em.py #17 2.447 -- Using empy: /usr/lib/python3/dist-packages/em.py #17 2.585 -- Using CATKIN_ENABLE_TESTING: ON #17 2.585 -- Call enable_testing() #17 2.588 -- Using CATKIN_TEST_RESULTS_DIR: /catkin_ws/build/test_results #17 3.003 -- Forcing gtest/gmock from source, though one was otherwise available. #17 3.003 -- Found gtest sources under '/usr/src/googletest': gtests will be built #17 3.003 -- Found gmock sources under '/usr/src/googletest': gmock will be built #17 3.033 -- Found PythonInterp: /usr/bin/python3 (found version "3.8.5") #17 3.036 -- Found Threads: TRUE #17 3.052 -- Using Python nosetests: /usr/bin/nosetests3 #17 3.119 -- catkin 0.8.9 #17 3.119 -- BUILD_SHARED_LIBS is on #17 3.289 -- BUILD_SHARED_LIBS is on #17 3.289 -- Using CATKIN_WHITELIST_PACKAGES: moveit_msgs;ros_tcp_endpoint;ur3_moveit;robotiq_2f_140_gripper_visualization;ur_description;ur_gazebo #17 4.211 -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #17 4.211 -- ~~ traversing 1 packages in topological order: #17 4.211 -- ~~ - ur3_moveit #17 4.211 -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #17 4.212 -- +++ processing catkin package: 'ur3_moveit' #17 4.212 -- ==> add_subdirectory(ur3_moveit) #17 4.771 -- Could NOT find ros_tcp_endpoint (missing: ros_tcp_endpoint_DIR) #17 4.771 -- Could not find the required component 'ros_tcp_endpoint'. The following CMake error indicates that you either need to install the package with the same name or change your environment so that it can be found. #17 4.771 CMake Error at /opt/ros/noetic/share/catkin/cmake/catkinConfig.cmake:83 (find_package): #17 4.771 Could not find a package configuration file provided by "ros_tcp_endpoint" #17 4.771 with any of the following names: #17 4.771 #17 4.771 ros_tcp_endpointConfig.cmake #17 4.771 ros_tcp_endpoint-config.cmake #17 4.771 #17 4.771 Add the installation prefix of "ros_tcp_endpoint" to CMAKE_PREFIX_PATH or #17 4.771 set "ros_tcp_endpoint_DIR" to a directory containing one of the above #17 4.771 files. If "ros_tcp_endpoint" provides a separate development package or #17 4.771 SDK, be sure it has been installed. #17 4.771 Call Stack (most recent call first): #17 4.771 ur3_moveit/CMakeLists.txt:13 (find_package) #17 4.771 #17 4.772 #17 4.775 -- Configuring incomplete, errors occurred! #17 4.775 See also "/catkin_ws/build/CMakeFiles/CMakeOutput.log". #17 4.775 See also "/catkin_ws/build/CMakeFiles/CMakeError.log". #17 4.782 Base path: /catkin_ws #17 4.782 Source space: /catkin_ws/src #17 4.782 Build space: /catkin_ws/build #17 4.782 Devel space: /catkin_ws/devel #17 4.782 Install space: /catkin_ws/install #17 4.782 Creating symlink "/catkin_ws/src/CMakeLists.txt" pointing to "/opt/ros/noetic/share/catkin/cmake/toplevel.cmake" #17 4.782 #### #17 4.782 #### Running command: "cmake /catkin_ws/src -DCATKIN_WHITELIST_PACKAGES=moveit_msgs;ros_tcp_endpoint;ur3_moveit;robotiq_2f_140_gripper_visualization;ur_description;ur_gazebo -DCATKIN_DEVEL_PREFIX=/catkin_ws/devel -DCMAKE_INSTALL_PREFIX=/catkin_ws/install -G Unix Makefiles" in "/catkin_ws/build" #17 4.782 #### #17 4.782 Invoking "cmake" failed

executor failed running [/bin/sh -c dos2unix /tutorial && dos2unix /setup.sh && chmod +x /setup.sh && /setup.sh && rm /setup.sh]: exit code: 1

opened by JoSharon 5

System.Net.SocketException: Address already in use

Hello Team,

I'm getting the System.Net.SocketException: Address already in use error from the Unity console.

Troubleshooting workaround by leaving the Override Unity IP Address blank and Change the ROS IP Address to the IP of your Docker container didn't fix the error.

Docker IP Configuration,

root@d283c453367f:/catkin_ws# ifconfig 
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.17.0.3  netmask 255.255.0.0  broadcast 172.17.255.255
        ether 02:42:ac:11:00:03  txqueuelen 0  (Ethernet)
        RX packets 179  bytes 24664 (24.6 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 61  bytes 4008 (4.0 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 53259  bytes 14479754 (14.4 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 53259  bytes 14479754 (14.4 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Unity_IP_Configuration

Regards, Jegathesan S

opened by nullbyte91 5

Cube not rotating

Hello, thank you for the very beneficial tutorial, I'm currently going through it. In part 2, I've followed the tutorial up to step 10 without errors. In step 10, the cube is overlaid with a green bounding box, however, it is not rotating. Any idea what could be the problem? I'm using Unity 2020.2.0f1

The following is a screenshot of my editor.

and if i continue to step 11, same thing, the box moves to a place and then stops moving, like the photo attached:

opened by ZahraaBass 5
Error: arm/arm: Unable to sample any valid states for goal tree
Hello there, I am trying to build robotics-object-pose-estimation project in my local machine but after I am running ROS server and try to click on pose estimation button in unity it return error "Error: arm/arm: Unable to sample any valid states for goal tree" Any help? Thanks

Console logs / stack traces

[ERROR] [1663850579.670529300]: arm/arm: Unable to sample any valid states for goal tree

Screenshots

Environment (please complete the following information, where applicable):

Unity Version: [e.g. Unity 2021.3.9f1]

Unity machine OS + version: [e.g. Windows 11]

ROS machine OS + version: [e.g. Ubuntu 18.04, ROS Noetic]

ROS–Unity communication: [e.g. Docker]

Package branches or versions: [e.g. [email protected]]
opened by waedbara 4
ROS failed when I changed the camera rotation

Describe the bug

To Reproduce Steps to reproduce the behavior: Just change camera rotation into this, defaul value is 20

Additional context

Idk why it's work fine with default camera but when I change its rotation, it's failed.

opened by BaoLocPham 0
Problems when building docker image

I am getting this error when building the docker image. Both on windows or ubuntu. I am attaching the screenshot of the error. I have followed all the steps.

any suggestion on how to solve this issue?

opened by dipinoch 0
A lot pick up erros
Hi,

In my build the robot almost never succeeds in picking up the cube. Even though I get shell msg "You can start planning" I've noticed three ERRORS in the dock workspace:

[controller_spawner-3]

[ERROR] [1650563249.826889700]: Could not find the planner configuration 'None' on the param server

[ERROR] [1650563266.917313200]: Action client not connected: /follow_joint_trajectory

Are any of these possibly related?

Thank you very much for your time.
opened by andrecavalcante 1
The Cube label for data collection is misplaced in a weird way
Describe the bug

The Cube label is misplaced in a weird way.

To Reproduce

Steps to reproduce the behavior:

Just running a Demo project with the Perception camera turned on (was trying to collect images for model training).

Screenshots

Environment:

Unity Version: e.g. Unity 2020.2.6f1 (As suggested)

Unity machine OS + version: MacOS 12.1

ROS machine OS + version: As suggested

ROS–Unity communication: Docker

Package branches or versions: As suggested

stale
opened by nkdchck 5

Releases(v0.0.1)

v0.0.1(Feb 19, 2021)

Tutorial assets for the Object Pose Estimation Tutorial.
Source code(tar.gz)
Source code(zip)
TutorialAssets.zip(5.84 MB)
UR3_single_cube_model.tar(105.27 MB)

A complete end-to-end demonstration in which we collect training data in Unity and use that data to train a deep neural network to predict the pose of a cube. This model is then deployed in a simulated robotic pick-and-place task.

Related tags

Overview

Object Pose Estimation Demo

Support

More from Unity Robotics

License

Comments

Proposed change(s)

Types of change(s)

Testing and Verification

Test Configuration:

Checklist

Other comments

Releases(v0.0.1)

v0.0.1(Feb 19, 2021)

Owner

Unity Technologies

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