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Enabling Large Language Models (LLMs) to comprehend the 3D physical world remains a significant challenge. Due to the lack of large-scale 3D-text pair datasets, the success of LLMs has yet to be replicated in 3D understanding. In this…

Computer Vision and Pattern Recognition · Computer Science 2025-05-23 Yuan Tang , Xu Han , Xianzhi Li , Qiao Yu , Jinfeng Xu , Yixue Hao , Long Hu , Min Chen

Semantic shape completion is a challenging problem in 3D computer vision where the task is to generate a complete 3D shape using a partial 3D shape as input. We propose a learning-based approach to complete incomplete 3D shapes through…

Computer Vision and Pattern Recognition · Computer Science 2018-10-02 Swaminathan Gurumurthy , Shubham Agrawal

We propose a novel approach aimed at object and semantic scene completion from a partial scan represented as a 3D point cloud. Our architecture relies on three novel layers that are used successively within an encoder-decoder structure and…

Computer Vision and Pattern Recognition · Computer Science 2022-04-01 Yida Wang , David Joseph Tan , Nassir Navab , Federico Tombari

As large language models (LLMs) achieve strong performance on traditional benchmarks, there is an urgent need for more challenging evaluation frameworks that probe deeper aspects of semantic understanding. We introduce SAGE (Semantic…

Artificial Intelligence · Computer Science 2025-09-26 Samarth Goel , Reagan J. Lee , Kannan Ramchandran

We present MeshLLM, a novel framework that leverages large language models (LLMs) to understand and generate text-serialized 3D meshes. Our approach addresses key limitations in existing methods, including the limited dataset scale when…

Recent advances in point cloud perception have demonstrated remarkable progress in scene understanding through vision-language alignment leveraging large language models (LLMs). However, existing methods may still encounter challenges in…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Zhenhua Ning , Zhuotao Tian , Shaoshuai Shi , Guangming Lu , Daojing He , Wenjie Pei , Li Jiang

Recent advances in 3D scene-language understanding have leveraged Large Language Models (LLMs) for 3D reasoning by transferring their general reasoning ability to 3D multi-modal contexts. However, existing methods typically adopt standard…

Computer Vision and Pattern Recognition · Computer Science 2026-03-25 Yerim Jeon , Miso Lee , WonJun Moon , Jae-Pil Heo

Scaling large multimodal models (LMMs) to 3D understanding poses unique challenges: point cloud data is sparse and irregular, existing models rely on fragmented architectures with modality-specific encoders, and training pipelines often…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Yongyuan Liang , Xiyao Wang , Yuanchen Ju , Jianwei Yang , Furong Huang

Multimodal Large Language Models (MLLMs) have achieved remarkable progress in visual recognition and semantic understanding. Nevertheless, their ability to perform precise compositional spatial reasoning remains largely unexplored. Existing…

Computer Vision and Pattern Recognition · Computer Science 2026-01-26 Daixian Liu , Jiayi Kuang , Yinghui Li , Yangning Li , Di Yin , Haoyu Cao , Xing Sun , Ying Shen , Hai-Tao Zheng , Liang Lin , Philip S. Yu

Multimodal Large Language Models (MLLMs) have made impressive progress in connecting vision and language, but they still struggle with spatial understanding and viewpoint-aware reasoning. Recent efforts aim to augment the input…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Kevin Qu , Haozhe Qi , Mihai Dusmanu , Mahdi Rad , Rui Wang , Marc Pollefeys

Agent-based models (ABMs) stand as an essential paradigm for proposing and validating hypothetical solutions or policies aimed at addressing challenges posed by complex systems and achieving various objectives. This process demands…

Computation and Language · Computer Science 2024-04-02 Tong Niu , Weihao Zhang , Rong Zhao

Evaluating the performance of Multi-modal Large Language Models (MLLMs), integrating both point cloud and language, presents significant challenges. The lack of a comprehensive assessment hampers determining whether these models truly…

Computer Vision and Pattern Recognition · Computer Science 2024-04-24 Junjie Zhang , Tianci Hu , Xiaoshui Huang , Yongshun Gong , Dan Zeng

Multimodal large language models (MLLMs) can enrich industrial anomaly detection with semantic descriptions and anomaly reasoning, but they still lag specialist anomaly detectors in binary detection accuracy. Existing approaches address…

Computer Vision and Pattern Recognition · Computer Science 2026-05-08 Xiaomeng Peng , Xilang Huang , Seon Han Choi

Multi-modal large language models (MLLMs) have shown incredible capabilities in a variety of 2D vision and language tasks. We extend MLLMs' perceptual capabilities to ground and reason about images in 3-dimensional space. To that end, we…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Jang Hyun Cho , Boris Ivanovic , Yulong Cao , Edward Schmerling , Yue Wang , Xinshuo Weng , Boyi Li , Yurong You , Philipp Krähenbühl , Yan Wang , Marco Pavone

Masked Autoencoders (MAE) have shown great potentials in self-supervised pre-training for language and 2D image transformers. However, it still remains an open question on how to exploit masked autoencoding for learning 3D representations…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 Renrui Zhang , Ziyu Guo , Rongyao Fang , Bin Zhao , Dong Wang , Yu Qiao , Hongsheng Li , Peng Gao

Unified segmentation of 3D point clouds is crucial for scene understanding, but is hindered by its sparse structure, limited annotations, and the challenge of distinguishing fine-grained object classes in complex environments. Existing…

Computer Vision and Pattern Recognition · Computer Science 2025-07-28 Zongyan Han , Mohamed El Amine Boudjoghra , Jiahua Dong , Jinhong Wang , Rao Muhammad Anwer

Although perception systems have made remarkable advancements in recent years, particularly in 2D reasoning segmentation, these systems still rely on explicit human instruction or pre-defined categories to identify target objects before…

Computer Vision and Pattern Recognition · Computer Science 2025-06-06 Kunshen Zhang

This paper presents ShapeLLM, the first 3D Multimodal Large Language Model (LLM) designed for embodied interaction, exploring a universal 3D object understanding with 3D point clouds and languages. ShapeLLM is built upon an improved 3D…

Computer Vision and Pattern Recognition · Computer Science 2024-07-15 Zekun Qi , Runpei Dong , Shaochen Zhang , Haoran Geng , Chunrui Han , Zheng Ge , Li Yi , Kaisheng Ma

We present Large Sign Language Models (LSLM), a novel framework for translating 3D American Sign Language (ASL) by leveraging Large Language Models (LLMs) as the backbone, which can benefit hearing-impaired individuals' virtual…

Computer Vision and Pattern Recognition · Computer Science 2025-11-12 Sen Zhang , Xiaoxiao He , Di Liu , Zhaoyang Xia , Mingyu Zhao , Chaowei Tan , Vivian Li , Bo Liu , Dimitris N. Metaxas , Mubbasir Kapadia

Enabling Large Language Models (LLMs) to understand the 3D physical world is an emerging yet challenging research direction. Current strategies for processing point clouds typically downsample the scene or divide it into smaller parts for…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Guofeng Mei , Wei Lin , Luigi Riz , Yujiao Wu , Fabio Poiesi , Yiming Wang