AL-Ref-SAM 2: Unleashing the Temporal-Spatial Reasoning Capacity of GPT for Training-Free Audio and Language Referenced Video Object Segmentation

[Paper] [Project]

Release Notes

• [2024/09/04] 🔥 Release our training free Audio Visual Segmentation (AVS) code.
• [2024/08/29] 🔥 Release our Technical Report and our training free Referring Video Object Segmetation (RVOS) code.

TODO

• Release online demo.

Overall Pipeline

In this project, we propose an Audio-Language-Referenced SAM 2 (AL-Ref-SAM 2) pipeline to explore the training-free paradigm for audio and language-referenced video object segmentation, namely AVS and RVOS tasks. We propose a novel GPT-assisted Pivot Selection (GPT-PS) module to instruct GPT-4 to perform two-step temporal-spatial reasoning for sequentially selecting pivot frames and pivot boxes, thereby providing SAM 2 with a high-quality initial object prompt. Furthermore, we propose a Language-Binded Reference Unification (LBRU) module to convert audio signals into language-formatted references, thereby unifying the formats of AVS and RVOS tasks in the same pipeline. Extensive experiments on both tasks show that our training-free AL-Ref-SAM 2 pipeline achieves performances comparable to or even better than fully-supervised fine-tuning methods.

Installation

1. Install SAM 2, Grounding DINO and LanguageBind refer to their origin code.

2. Install other requirements by:

pip install -r requirements.txt

3. BEATs ckpt download: download two checkpoints Fine-tuned BEATs_iter3+ (AS20K) (cpt2) and Fine-tuned BEATs_iter3+ (AS2M) (cpt2) from beats, and put them in ./avs/checkpoints.

Data Preparation

Referring Video Object Segmentation

Please refer to ReferFormer for Ref-Youtube-VOS and Ref-DAVIS17 data preparation and refer to MeViS for MeViS data preparation.

Audio Visual Segmentation

1. AVSBench Dataset

Download the AVSBench-object dataset for the S4, MS3 setting and AVSBench-semantic dataset for the AVSS and AVSS-V2-Binary setting from AVSBench.

2. Audio Segmentation

We use the Real-Time-Sound-Event-Detection model to calculate the similarity of audio features between adjacent frames and segment the audio based on a similarity threshold of 0.5. To save your labor, we also provide our processed audio segmentation results in ./avs/audio_segment.

Get Started

Referring Video Object Segmentation

For Ref-Youtube-VOS and MeViS dataset, you need to check the code in rvos/ytvos. For Ref-DAVIS17 dataset, you need to check the code in rvos/davis.

Please first check and change the config settings under the opt.py in the corresponding folder. Next, run the code in the order shown in the diagram.

Audio Visual Segmentation

Please enter the folder corresponding to the dataset in avs folder, check and change the config setting config.py file, and run the run.sh file.

Due to the possibility that the results of the two runs of GPT may not be entirely consistent, we provide our run results in ./avs/gpt_results for reference.

Citation

@article{huang2024unleashing,
      title={Unleashing the Temporal-Spatial Reasoning Capacity of GPT for Training-Free Audio and Language Referenced Video Object Segmentation}, 
      author={Huang, Shaofei and Ling, Rui and Li, Hongyu and Hui, Tianrui and Tang, Zongheng and Wei, Xiaoming and Han, Jizhong and Liu, Si},
      journal={arXiv preprint arXiv:2408.15876},
      year={2024},
}