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Embodied AI is one of the most popular studies in artificial intelligence and robotics, which can effectively improve the intelligence of real-world agents (i.e. robots) serving human beings. Scene knowledge is important for an agent to…

Artificial Intelligence · Computer Science 2024-05-14 Song Yaoxian , Sun Penglei , Liu Haoyu , Li Zhixu , Song Wei , Xiao Yanghua , Zhou Xiaofang

Building 3D scene graphs has recently emerged as a topic in scene representation for several embodied AI applications to represent the world in a structured and rich manner. With their increased use in solving downstream tasks (eg,…

Computer Vision and Pattern Recognition · Computer Science 2023-09-28 Sayan Deb Sarkar , Ondrej Miksik , Marc Pollefeys , Daniel Barath , Iro Armeni

3D scene generation seeks to synthesize spatially structured, semantically meaningful, and photorealistic environments for applications such as immersive media, robotics, autonomous driving, and embodied AI. Early methods based on…

Computer Vision and Pattern Recognition · Computer Science 2025-05-09 Beichen Wen , Haozhe Xie , Zhaoxi Chen , Fangzhou Hong , Ziwei Liu

While generative world models have advanced video and occupancy-based data synthesis, LiDAR generation remains underexplored despite its importance for accurate 3D perception. Extending generation to 4D LiDAR data introduces challenges in…

Computer Vision and Pattern Recognition · Computer Science 2025-09-16 Ao Liang , Youquan Liu , Yu Yang , Dongyue Lu , Linfeng Li , Lingdong Kong , Huaici Zhao , Wei Tsang Ooi

Adapter-based tuning methods have shown significant potential in transferring knowledge from pre-trained Vision-Language Models to the downstream tasks. However, after reviewing existing adapters, we find they generally fail to fully…

Computer Vision and Pattern Recognition · Computer Science 2024-10-11 Yumiao Zhao , Bo Jiang , Xiao Wang , Qin Xu , Jin Tang

Synthesizing controllable 6-DOF object manipulation trajectories in 3D environments is essential for enabling robots to interact with complex scenes, yet remains challenging due to the need for accurate spatial reasoning, physical…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Huajian Zeng , Abhishek Saroha , Daniel Cremers , Xi Wang

We introduce the task of predicting functional 3D scene graphs for real-world indoor environments from posed RGB-D images. Unlike traditional 3D scene graphs that focus on spatial relationships of objects, functional 3D scene graphs capture…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Chenyangguang Zhang , Alexandros Delitzas , Fangjinhua Wang , Ruida Zhang , Xiangyang Ji , Marc Pollefeys , Francis Engelmann

For robots to perform a wide variety of tasks, they require a 3D representation of the world that is semantically rich, yet compact and efficient for task-driven perception and planning. Recent approaches have attempted to leverage features…

Indoor scene modification has emerged as a prominent area within computer vision, particularly for its applications in Augmented Reality (AR) and Virtual Reality (VR). Traditional methods often rely on pre-existing object databases and…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Yiyang Luo , Ke Lin , Chao Gu

Real-world optimization problems are generally not just black-box problems, but also involve mixed types of inputs in which discrete and continuous variables coexist. Such mixed-space optimization possesses the primary challenge of modeling…

Machine Learning · Computer Science 2022-02-09 Jaeyeon Ahn , Taehyeon Kim , Seyoung Yun

3D scene reconstruction is essential for applications in virtual reality, robotics, and autonomous driving, enabling machines to understand and interact with complex environments. Traditional 3D Gaussian Splatting techniques rely on images…

Graphics · Computer Science 2025-03-04 Changlin Song , Jiaqi Wang , Liyun Zhu , He Weng

Variable scene layouts and coexisting objects across scenes make indoor scene recognition still a challenging task. Leveraging object information within scenes to enhance the distinguishability of feature representations has emerged as a…

Computer Vision and Pattern Recognition · Computer Science 2024-08-22 Chuanxin Song , Hanbo Wu , Xin Ma

Data scarcity continues to be a major challenge in the field of robotic manipulation. Although diffusion models provide a promising solution for generating robotic manipulation videos, existing methods largely depend on 2D trajectories,…

Robotics · Computer Science 2025-11-14 Ying Li , Xiaobao Wei , Xiaowei Chi , Yuming Li , Zhongyu Zhao , Hao Wang , Ningning Ma , Ming Lu , Sirui Han , Shanghang Zhang

Customized text-to-video generation aims to generate text-guided videos with user-given subjects, which has gained increasing attention. However, existing works are primarily limited to single-subject oriented text-to-video generation,…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Hong Chen , Xin Wang , Guanning Zeng , Yipeng Zhang , Yuwei Zhou , Feilin Han , Yaofei Wu , Wenwu Zhu

Controllable generation of realistic LiDAR scenes is crucial for applications such as autonomous driving and robotics. While recent diffusion-based models achieve high-fidelity LiDAR generation, they lack explicit control over foreground…

Computer Vision and Pattern Recognition · Computer Science 2025-08-06 Youquan Liu , Lingdong Kong , Weidong Yang , Xin Li , Ao Liang , Runnan Chen , Ben Fei , Tongliang Liu

In this paper, we propose a novel model called SGFormer, Semantic Graph TransFormer for point cloud-based 3D scene graph generation. The task aims to parse a point cloud-based scene into a semantic structural graph, with the core challenge…

Computer Vision and Pattern Recognition · Computer Science 2023-12-21 Changsheng Lv , Mengshi Qi , Xia Li , Zhengyuan Yang , Huadong Ma

Despite recent advances in text-to-image generation, controlling geometric layout and PBR material properties in synthesized scenes remains challenging. We present a pipeline that first produces a G-buffer (albedo, normals, depth,…

Graphics · Computer Science 2026-02-10 Bowen Xue , Giuseppe Claudio Guarnera , Shuang Zhao , Zahra Montazeri

Functional 3D scene graphs offer a versatile and flexible representation for 3D scene understanding and robotic manipulation, defined by object nodes, interactive elements, and functional relationship edges. However, their potential remains…

Modern machine learning models for scene understanding, such as depth estimation and object tracking, rely on large, high-quality datasets that mimic real-world deployment scenarios. To address data scarcity, we propose an end-to-end system…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Sonia Laguna , Alberto Garcia-Garcia , Marie-Julie Rakotosaona , Stylianos Moschoglou , Leonhard Helminger , Sergio Orts-Escolano

Recently, text-to-image generation models have achieved remarkable advancements, particularly with diffusion models facilitating high-quality image synthesis from textual descriptions. However, these models often struggle with achieving…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Lunhao Duan , Shanshan Zhao , Wenjun Yan , Yinglun Li , Qing-Guo Chen , Zhao Xu , Weihua Luo , Kaifu Zhang , Mingming Gong , Gui-Song Xia