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In LiDAR-based 3D object detection for autonomous driving, the ratio of the object size to input scene size is significantly smaller compared to 2D detection cases. Overlooking this difference, many 3D detectors directly follow the common…

计算机视觉与模式识别 · 计算机科学 2021-12-14 Lue Fan , Ziqi Pang , Tianyuan Zhang , Yu-Xiong Wang , Hang Zhao , Feng Wang , Naiyan Wang , Zhaoxiang Zhang

Recent GS-based rendering has made significant progress for LiDAR, surpassing Neural Radiance Fields (NeRF) in both quality and speed. However, these methods exhibit artifacts in extrapolated novel view synthesis due to the incomplete…

计算机视觉与模式识别 · 计算机科学 2025-11-18 Qifeng Chen , Jiarun Liu , Rengan Xie , Tao Tang , Sicong Du , Yiru Zhao , Yuchi Huo , Sheng Yang

LiDAR point cloud semantic segmentation is essential for interpreting 3D environments in applications such as autonomous driving and robotics. Recent methods achieve strong performance by exploiting different point cloud representations or…

计算机视觉与模式识别 · 计算机科学 2025-09-16 Simone Mosco , Daniel Fusaro , Wanmeng Li , Emanuele Menegatti , Alberto Pretto

Generating ground-level views and coherent 3D site models from aerial-only imagery is challenging due to extreme viewpoint changes, missing intermediate observations, and large scale variations. Existing methods either refine renderings…

计算机视觉与模式识别 · 计算机科学 2026-04-14 Sirshapan Mitra , Yogesh S. Rawat

The 3D object detection capabilities in urban environments have been enormously improved by recent developments in Light Detection and Range (LiDAR) technology. This paper presents a novel framework that transforms the detection and…

计算机视觉与模式识别 · 计算机科学 2024-05-24 Nawfal Guefrachi , Hakim Ghazzai , Ahmad Alsharoa

Much effort has been put into developing samplers with specific properties, such as producing blue noise, low-discrepancy, lattice or Poisson disk samples. These samplers can be slow if they rely on optimization processes, may rely on a…

Autonomous vehicles operate in highly dynamic environments necessitating an accurate assessment of which aspects of a scene are moving and where they are moving to. A popular approach to 3D motion estimation, termed scene flow, is to employ…

计算机视觉与模式识别 · 计算机科学 2021-10-27 Philipp Jund , Chris Sweeney , Nichola Abdo , Zhifeng Chen , Jonathon Shlens

Modern cameras' performance in low-light conditions remains suboptimal due to fundamental limitations in photon shot noise and sensor read noise. Generative image restoration methods have shown promising results compared to traditional…

计算机视觉与模式识别 · 计算机科学 2025-11-26 Xijun Wang , Prateek Chennuri , Dilshan Godaliyadda , Yu Yuan , Bole Ma , Xingguang Zhang , Hamid R. Sheikh , Stanley Chan

Seismic imaging from sparsely acquired data faces challenges such as low image quality, discontinuities, and migration swing artifacts. Existing convolutional neural network (CNN)-based methods struggle with complex feature distributions…

地球物理 · 物理学 2024-08-01 Xingchen Shi , Shijun Cheng , Weijian Mao , Wei Ouyang

Diffusion-based generative models (DGMs) have recently attracted attention in speech enhancement research (SE) as previous works showed a remarkable generalization capability. However, DGMs are also computationally intensive, as they…

音频与语音处理 · 电气工程与系统科学 2024-06-21 Chenda Li , Samuele Cornell , Shinji Watanabe , Yanmin Qian

The worldwide commercialization of fifth generation (5G) wireless networks and the exciting possibilities offered by connected and autonomous vehicles (CAVs) are pushing toward the deployment of heterogeneous sensors for tracking dynamic…

图像与视频处理 · 电气工程与系统科学 2022-02-03 Francesco Nardo , Davide Peressoni , Paolo Testolina , Marco Giordani , Andrea Zanella

In this paper, we propose GuideSR, a novel single-step diffusion-based image super-resolution (SR) model specifically designed to enhance image fidelity. Existing diffusion-based SR approaches typically adapt pre-trained generative models…

图像与视频处理 · 电气工程与系统科学 2025-05-02 Aditya Arora , Zhengzhong Tu , Yufei Wang , Ruizheng Bai , Jian Wang , Sizhuo Ma

In the expanding field of generative artificial intelligence, integrating robust watermarking technologies is essential to protect intellectual property and maintain content authenticity. Traditionally, watermarking techniques have been…

机器学习 · 计算机科学 2024-10-15 Renyi Yang

Diffusion models have recently achieved remarkable performance in image super-resolution (SR), but their high computational cost limits practical deployment in remote sensing applications. To address this issue, we propose SlimDiffSR, a…

计算机视觉与模式识别 · 计算机科学 2026-05-19 Ce Wang , Zhenyu Hu , Wanjie Sun

The integration of RGB and depth modalities significantly enhances the accuracy of segmenting complex indoor scenes, with depth data from RGB-D cameras playing a crucial role in this improvement. However, collecting an RGB-D dataset is more…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Xinhua Xu , Hong Liu , Jianbing Wu , Jinfu Liu

A diffusion probabilistic model (DPM), which constructs a forward diffusion process by gradually adding noise to data points and learns the reverse denoising process to generate new samples, has been shown to handle complex data…

计算机视觉与模式识别 · 计算机科学 2023-10-16 Zhengxiong Luo , Dayou Chen , Yingya Zhang , Yan Huang , Liang Wang , Yujun Shen , Deli Zhao , Jingren Zhou , Tieniu Tan

Diffusion models have recently shown great promise for generative modeling, outperforming GANs on perceptual quality and autoregressive models at density estimation. A remaining downside is their slow sampling time: generating high quality…

机器学习 · 计算机科学 2022-06-08 Tim Salimans , Jonathan Ho

Millimeter-wave radar offers a promising sensing modality for autonomous systems thanks to its robustness in adverse conditions and low cost. However, its utility is significantly limited by the sparsity and low resolution of radar point…

计算机视觉与模式识别 · 计算机科学 2025-11-11 Ruijie Zhang , Bixin Zeng , Shengpeng Wang , Fuhui Zhou , Wei Wang

Despite diffusion models' superior capabilities in modeling complex distributions, there are still non-trivial distributional discrepancies between generated and ground-truth images, which has resulted in several notable problems in image…

计算机视觉与模式识别 · 计算机科学 2024-10-08 Yujian Liu , Yang Zhang , Tommi Jaakkola , Shiyu Chang

4D panoptic LiDAR segmentation is essential for scene understanding in autonomous driving and robotics, combining semantic and instance segmentation with temporal consistency. Current methods, like 4D-PLS and 4D-STOP, use a…

计算机视觉与模式识别 · 计算机科学 2025-03-26 Nirit Alkalay , Roy Orfaig , Ben-Zion Bobrovsky