Instruct2Act: Mapping Multi-modality Instructions to Robotic Actions with Large Language Model

Foundation models have made significant strides in various applications, including text-to-image generation, panoptic segmentation, and natural language processing. This paper presents Instruct2Act, a framework that utilizes Large Language Models to map multi-modal instructions to sequential actions for robotic manipulation tasks. Specifically, Instruct2Act employs the LLM model to generate Python programs that constitute a comprehensive perception, planning, and action loop for robotic tasks. In the perception section, pre-defined APIs are used to access multiple foundation models where the Segment Anything Model (SAM) accurately locates candidate objects, and CLIP classifies them. In this way, the framework leverages the expertise of foundation models and robotic abilities to convert complex high-level instructions into precise policy codes. Our approach is adjustable and flexible in accommodating various instruction modalities and input types and catering to specific task demands. We validated the practicality and efficiency of our approach by assessing it on robotic tasks in different scenarios within tabletop manipulation domains. Furthermore, our zero-shot method outperformed many state-of-the-art learning-based policies in several tasks.

Instruct2Act: Mapping Multi-modality Instructions to Robotic Actions with Large Language Model Siyuan Huang, Zhengkai Jiang, Hao Dong, Yu Qiao, Peng Gao, Hongsheng Li

• Instruct2Act: Mapping Multi-modality Instructions to Robotic Actions with Large Language Model
  • Supported Modules
  • How to run
  • Prompts Setting
  • Evaluation Tasks
  • Notes
  • Acknowledgement

Supported Modules

Currently, we support the following modules:

Correspondingly, please prepare the SAM and CLIP model ckpts in advance. You can download the ckpts from SAM and OpenCLIP. Then set the path in the file 'engine_robotic.py'.

You can also add your personlized modules in 'engine_robotic.py', and add the API definition in the prompt files.

How to run

1. Install the required packages with the provided environment.yaml

   • If you meet any install issue, you can take a look at Issue. Thanks for @euminds.

2. Install the VIMABench with VIMABench.

3. Change the OpenAI API-key in visual_programming_prompt/robotic_exec_generation.py

4. run the robotic_anything_gpt_online.py.

Prompts Setting

In Instruct2Act, we implement two types of prompts, i.e., task-specific and task-agnostic prompts. The task-specific prompts are designed for specific tasks which is in the VISPROG style, and the task-agnostic prompts are designed for general purpose, and it is in ViperGPT plus VISPROG style. We provide more details in the our paper. And you can change the setting in the file visual_programming_prompt/robotic_exec_generation.py. For very specific tasks like robotic manipulations where you know the flow clearly, we suggest to use the task-specific prompts. For general purpose, we suggest to use the task-agnostic prompts. These two prompts are stored in visual_programm_prompt.py and full_prompt.ini respectively.

Besides the language prompts, we also provide the pointing-language enhanced prompts where cursor click will be used to select the target objects. You can see the details with funcation SAM() in engine_robotic.py.

We provide two code generation mode for robotic manipulation tasks, i.e., offline and online mode. The codes with offline mode are generated in advance and summarized with expert knowledge, and this type is used for the demo and quick-trail usage. The online mode are generated on the fly, and this type is used for the general purpose.

Evaluation Tasks

We select six representative meta tasks from VIMABench (17 tasks in total) to evaluate the proposed methods in the tabletop manipulation domain, as shown in below. To run the evaluation, please follow the instructions in the VIMABench.

Task	Instruction	Visualization
Visual Manipulation	Put the polka dot block into the green container.
Scene Understanding	Put the blue paisley object in another given scene image into the green object.
Rotation	Rotate the letter-M 30 degrees
Rearrange	Rearrange to the target scene.
Rearrange then restore	Rearrange objects to target scene and then restore.
Pick in order then restore	Put the cyan block into the yellow square then into the white-black square. Finally restore it into its original container.

Notes

1. To speed up the SAM inference progress, we add cuda device option in function build_sam(), you should modify it accordingly in the source code and then recompile the package.

2. During evaluation, we set the "hide_arm=True" and close the debug_window. If you want to visualize the arm movement, please set them correctly.

3. The orignal movement in VIMABench is quite quick, if you want to slow down the movement, please add some lines like sleep() in VIMABench.

4. When use ChatGPT for generation, you need to mange some network stuff. Also, we found that when the network situation is not ideal, sometimes the generated codes are in bad quality (incomplete or too short).

Acknowledgement

We would like to thank the authors of the following great projects, this project is built upon these great open-sourced projects.

• VIMABench
• OpenCLIP
• SAM

We are also inspired by the following projects:

• Viper
• TaskMatrix
• visprog