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Align 3D Point Cloud with Multi-modalities for Large Language Models

License: MIT License

Python 99.86% Shell 0.14%

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point-bind_point-llm's Issues

Some questions about the downstream tasks of Point-Bind

Hi, thanks for sharing your amazing work. After going through your paper and some related work, I have some questions that I hope you could shed some light on. They are mainly about the downstream utilization of Point-Bind.

  • Question 1: This question is about the Any-to-3D Generation part. In my understanding, Point-Bind does not train the Image-Bind encoder, so does this mean that for text/image/audio-to-3D tasks, your approach is no different from directly applying Image-Bind features to CLIP-Forge's decoder?

  • Question 2: This question is about the Point-LLM part. It seems to me that during the training procedure, you finetuned LLaMA using the same strategy with ImageBind-LLM. Then in the inference part, you add in features extracted from the Point-Bind encoder. I am a little confused with the difference between Point-LLM and ImageBind-LLM. Also, it seems that in the ImageBind-LLM paper, they mention that for 3D domain instructions, they utilize Point-Bind to encode inputs.

  • Question 3: This question is also about the Point-LLM part. During inference, you feed the Point-Bind extracted features to the visual cache model to retrieve top-k similar ImageBind-encoded features. While this does address the semantic gap between 2D-3D encoders, doesn't this reduce the task of 3D question answering back to some sort of 2D scene question answering? Just like the example given in your paper, when the Point-LLM is given a point cloud of a plane and asked to describe the details of this object, it provides details about the color which seems unlikely to be learned from the point cloud itself (in my understanding, this might be because the top-k images features has encoded color information).

Thanks in advance and again for sharing your work.

Questions about the demo

Hi, thanks for sharing your amazing work. I have two questions about the demo you provided.

(1) I noticed that you posted "Try our 💥 [Online Demo] here, which is integrated into [ImageBind-LLM]" and I entered the web link. But it seems the SPHINX-MLLM Demo, and I don’t see the entrance to submit point cloud data. So where can I submit point cloud data and generate corresponding descriptions like in the paper?

(2) Based on the first questions, in addition to the online demo, can you provide the inference code? For example, something like SPHINX(https://github.com/Alpha-VLLM/LLaMA2-Accessory/tree/main/SPHINX)?

Thanks.

pretrained weights of point-bind

Thanks for sharing the great project! This project associates 3d with more modalities than before thus gains more benefits.

I wonder could you also share the pretrained weights of point-bind? E.g., i2p-mae.pt and pointbert.pt

Thanks.

GPU & Time

Thank you for your wonderful work and I would like to ask what kind of GPU you used to train the model and the time spent on training.

Errors Occur During Interaction with LLaMA

I really appreciate the fantastic job done the authors in the project.

When I tried to interact with the LLaMA, I got the following errors:

Traceback (most recent call last):
  File "exp.py", line 7, in <module>
    model = llama.load("/home/qw/proj/ckpt/llama2/llama-2-7b-chat", adapter_ckpt='/home/qw/proj/Point-Bind_Point-LLM/ckpt/7B.pth', knn=True)
  File "/home/qw/proj/Point-Bind_Point-LLM/Point-LLM/llama/llama_adapter.py", line 339, in load
    model = LLaMA_adapter(
  File "/home/qw/proj/Point-Bind_Point-LLM/Point-LLM/llama/llama_adapter.py", line 53, in __init__
    self.tokenizer = Tokenizer(model_path=llama_tokenizer)
  File "/home/qw/proj/Point-Bind_Point-LLM/Point-LLM/llama/tokenizer.py", line 17, in __init__
    self.sp_model = SentencePieceProcessor(model_file=model_path)
  File "/home/qw/.conda/envs/pb/lib/python3.8/site-packages/sentencepiece/__init__.py", line 447, in Init
    self.Load(model_file=model_file, model_proto=model_proto)
  File "/home/qw/.conda/envs/pb/lib/python3.8/site-packages/sentencepiece/__init__.py", line 905, in Load
    return self.LoadFromFile(model_file)
  File "/home/qw/.conda/envs/pb/lib/python3.8/site-packages/sentencepiece/__init__.py", line 310, in LoadFromFile
    return _sentencepiece.SentencePieceProcessor_LoadFromFile(self, arg)
RuntimeError: Internal: src/sentencepiece_processor.cc(1101) [model_proto->ParseFromArray(serialized.data(), serialized.size())]

I would be grateful if someone could help me with this problem.

In addition, I think it would be great if authors could also specify the desired version of required packages (e.g., pytorch, torchaudio, torchvision and cudatoolkit, etc).

有关example文件夹下.pt的提取方式

您好:

感谢您开源了代码。我想请教一下,您在example文件夹下提供的.pt文件是已经采样了8192个点,是怎么从原始的点云中提取的呢?谢谢

Demo not working

Hello, first of all thank you for sharing your amazing work

I'm trying to upload a pointcloud to the demo web, but it gets stuck uploading and never finishes. I tried with multiple pointcloud, .ply format.

Questions about 3D Q&A

Could you provide a script or instructions about how to perform 3D Q&A given point cloud?

Thanks

The points' format

There are airplane.pt, examples/car.pt, and examples/toilet.pt in the example.
But I have never seen this format of point cloud.
How can I test my own point clouds?

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