Point-Bind & Point-LLM: Aligning Point Cloud with Multi-modality for 3D Understanding, Generation, and Instruction Following
This work addresses the challenge of extending 3D point clouds to multi-modality applications for the computer vision and AI communities, representing a novel method rather than an incremental improvement.
The authors tackled the problem of aligning 3D point clouds with multiple modalities like images, language, audio, and video, resulting in Point-Bind for joint embedding and Point-LLM for 3D instruction following, which exhibits superior 3D and multi-modal question-answering capacity without requiring 3D instruction data.
We introduce Point-Bind, a 3D multi-modality model aligning point clouds with 2D image, language, audio, and video. Guided by ImageBind, we construct a joint embedding space between 3D and multi-modalities, enabling many promising applications, e.g., any-to-3D generation, 3D embedding arithmetic, and 3D open-world understanding. On top of this, we further present Point-LLM, the first 3D large language model (LLM) following 3D multi-modal instructions. By parameter-efficient fine-tuning techniques, Point-LLM injects the semantics of Point-Bind into pre-trained LLMs, e.g., LLaMA, which requires no 3D instruction data, but exhibits superior 3D and multi-modal question-answering capacity. We hope our work may cast a light on the community for extending 3D point clouds to multi-modality applications. Code is available at https://github.com/ZiyuGuo99/Point-Bind_Point-LLM.