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Reference-guided image generation has progressed rapidly, yet current diffusion models still struggle to preserve fine-grained visual details when refining a generated image using a reference. This limitation arises because VAE-based latent…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Yaoli Liu , Ziheng Ouyang , Shengtao Lou , Yiren Song

The endeavor of artificial intelligence (AI) is to design autonomous agents capable of achieving complex tasks. Namely, reinforcement learning (RL) proposes a theoretical background to learn optimal behaviors. In practice, RL algorithms…

Machine Learning · Computer Science 2022-09-27 Firas Jarboui , Ahmed Akakzia

In this paper, we tackle the challenging problem of point cloud completion from the perspective of feature learning. Our key observation is that to recover the underlying structures as well as surface details, given partial input, a…

Computer Vision and Pattern Recognition · Computer Science 2022-09-15 Zejia Su , Haibin Huang , Chongyang Ma , Hui Huang , Ruizhen Hu

3D anomaly detection (AD) is a crucial task in computer vision, aiming to identify anomalous points or regions from point cloud data. However, existing methods may encounter challenges when handling point clouds with changes in orientation…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Hanzhe Liang , Jie Zhou , Can Gao , Bingyang Guo , Jinbao Wang , Linlin Shen

Deep learning approaches to 3D shape segmentation are typically formulated as a multi-class labeling problem. Existing models are trained for a fixed set of labels, which greatly limits their flexibility and adaptivity. We opt for top-down…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Fenggen Yu , Kun Liu , Yan Zhang , Chenyang Zhu , Kai Xu

Automatic and accurate detection of anatomical landmarks is an essential operation in medical image analysis with a multitude of applications. Recent deep learning methods have improved results by directly encoding the appearance of the…

Computer Vision and Pattern Recognition · Computer Science 2021-05-20 Guang-Quan Zhou , Juzheng Miao , Xin Yang , Rui Li , En-Ze Huo , Wenlong Shi , Yuhao Huang , Jikuan Qian , Chaoyu Chen , Dong Ni

Current Vision-Language-Action (VLA) models typically treat the deepest representation of a vision-language backbone as universally optimal for action prediction. However, robotic manipulation is composed of many frequent closed-loop…

Artificial Intelligence · Computer Science 2026-05-12 Boyang Shen , Kaixiang Yang , Hao Wang , Qiuyu Yu , Qiang Xie , Qiang Li , Zhiwei Wang

Accurate extrinsic calibration of LiDAR, RADAR, and camera sensors is essential for reliable perception in autonomous vehicles. Still, it remains challenging due to factors such as mechanical vibrations and cumulative sensor drift in…

Computer Vision and Pattern Recognition · Computer Science 2025-12-10 Hafeez Husain Cholakkal , Stefano Arrigoni , Francesco Braghin

3D point cloud classification is a fundamental task in safety-critical applications such as autonomous driving, robotics, and augmented reality. However, recent studies reveal that point cloud classifiers are vulnerable to structured…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Liang Zhou , Qiming Wang , Tianze Chen

We study 3D point cloud attribute compression using a volumetric approach: given a target volumetric attribute function $f : \mathbb{R}^3 \rightarrow \mathbb{R}$, we quantize and encode parameter vector $\theta$ that characterizes $f$ at…

Signal Processing · Electrical Eng. & Systems 2023-04-04 Tam Thuc Do , Philip A. Chou , Gene Cheung

Point cloud analysis is challenging due to irregularity and unordered data structure. To capture the 3D geometries, prior works mainly rely on exploring sophisticated local geometric extractors using convolution, graph, or attention…

Computer Vision and Pattern Recognition · Computer Science 2022-11-30 Xu Ma , Can Qin , Haoxuan You , Haoxi Ran , Yun Fu

Learning for manipulation requires using policies that have access to rich sensory information such as point clouds or RGB images. Point clouds efficiently capture geometric structures, making them essential for manipulation tasks in…

Although recent efforts have extended Neural Radiance Fields (NeRF) into LiDAR point cloud synthesis, the majority of existing works exhibit a strong dependence on precomputed poses. However, point cloud registration methods struggle to…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Weiyi Xue , Zehan Zheng , Fan Lu , Haiyun Wei , Guang Chen , Changjun Jiang

Point cloud-based large scale place recognition is an important but challenging task for many applications such as Simultaneous Localization and Mapping (SLAM). Taking the task as a point cloud retrieval problem, previous methods have made…

Computer Vision and Pattern Recognition · Computer Science 2022-08-30 Zhaoxin Fan , Zhenbo Song , Wenping Zhang , Hongyan Liu , Jun He , Xiaoyong Du

This study presents a novel environment-aware reinforcement learning (RL) framework designed to augment the operational capabilities of autonomous underwater vehicles (AUVs) in underwater environments. Departing from traditional RL…

Systems and Control · Electrical Eng. & Systems 2025-12-02 Yimian Ding , Jingzehua Xu , Guanwen Xie , Shuai Zhang , Yi Li

Detailed routing remains one of the most complex and time-consuming steps in modern physical design due to the challenges posed by shrinking feature sizes and stricter design rules. Prior detailed routers achieve state-of-the-art results by…

Hardware Architecture · Computer Science 2025-12-04 Afsara Khan , Austin Rovinski

Deep reinforcement learning (RL) has been successfully applied to a variety of game-like environments. However, the application of deep RL to visual navigation with realistic environments is a challenging task. We propose a novel learning…

Robotics · Computer Science 2019-11-12 Jonáš Kulhánek , Erik Derner , Tim de Bruin , Robert Babuška

We present PPF-FoldNet for unsupervised learning of 3D local descriptors on pure point cloud geometry. Based on the folding-based auto-encoding of well known point pair features, PPF-FoldNet offers many desirable properties: it necessitates…

Computer Vision and Pattern Recognition · Computer Science 2018-08-31 Haowen Deng , Tolga Birdal , Slobodan Ilic

Training deep reinforcement learning (RL) agents necessitates overcoming the highly unstable nonconvex stochastic optimization inherent in the trial-and-error mechanism. To tackle this challenge, we propose a physics-inspired optimization…

Machine Learning · Computer Science 2024-12-10 Yao Lyu , Xiangteng Zhang , Shengbo Eben Li , Jingliang Duan , Letian Tao , Qing Xu , Lei He , Keqiang Li

Mesh reconstruction from Neural Radiance Fields (NeRF) is widely used in 3D reconstruction and has been applied across numerous domains. However, existing methods typically rely solely on the given training set images, which restricts…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Haoyang Wang , Liming Liu , Xinggong Zhang