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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

Sparse convolutional neural networks (CNNs) have gained significant traction over the past few years as sparse CNNs can drastically decrease the model size and computations, if exploited befittingly, as compared to their dense counterparts.…

硬件体系结构 · 计算机科学 2021-11-10 Mahmood Azhar Qureshi , Arslan Munir

Deep learning-based point cloud processing plays an important role in various vision tasks, such as autonomous driving, virtual reality (VR), and augmented reality (AR). The submanifold sparse convolutional network (SSCN) has been widely…

信号处理 · 电气工程与系统科学 2022-10-17 Zilun Wang , Wendong Mao , Peixiang Yang , Zhongfeng Wang , Jun Lin

Ultrasound imaging faces a trade-off between image quality and hardware complexity caused by dense transducers. Sparse arrays are one popular solution to mitigate this challenge. This work proposes an end-to-end optimization framework that…

图像与视频处理 · 电气工程与系统科学 2026-04-01 Sergio Urrea , Adrian Basarab , Hervé Liebgott , Henry Arguello

Sparse coding (SC) is an automatic feature extraction and selection technique that is widely used in unsupervised learning. However, conventional SC vectorizes the input images, which breaks apart the local proximity of pixels and destructs…

计算机视觉与模式识别 · 计算机科学 2017-03-29 Fei Jiang , Xiao-Yang Liu , Hongtao Lu , Ruimin Shen

Upsampling LiDAR point clouds in autonomous driving scenarios remains a significant challenge due to the inherent sparsity and complex 3D structures of the data. Recent studies have attempted to address this problem by converting the…

计算机视觉与模式识别 · 计算机科学 2025-07-24 Chuang Chen , Xiaolin Qin , Jing Hu , Wenyi Ge

Current convolutional neural networks algorithms for video object tracking spend the same amount of computation for each object and video frame. However, it is harder to track an object in some frames than others, due to the varying amount…

计算机视觉与模式识别 · 计算机科学 2018-01-03 Chris Ying , Katerina Fragkiadaki

Self-supervised monocular depth prediction provides a cost-effective solution to obtain the 3D location of each pixel. However, the existing approaches usually lead to unsatisfactory accuracy, which is critical for autonomous robots. In…

计算机视觉与模式识别 · 计算机科学 2021-11-30 Ziyue Feng , Longlong Jing , Peng Yin , Yingli Tian , Bing Li

Recently, numerous learning-based compression methods have been developed with outstanding performance for the coding of the geometry information of point clouds. On the contrary, limited explorations have been devoted to point cloud…

图像与视频处理 · 电气工程与系统科学 2022-04-05 Jianqiang Wang , Zhan Ma

In this work, we present SpaRC, a novel Sparse fusion transformer for 3D perception that integrates multi-view image semantics with Radar and Camera point features. The fusion of radar and camera modalities has emerged as an efficient…

计算机视觉与模式识别 · 计算机科学 2025-09-25 Philipp Wolters , Johannes Gilg , Torben Teepe , Fabian Herzog , Felix Fent , Gerhard Rigoll

We present a new two-stage 3D object detection framework, named sparse-to-dense 3D Object Detector (STD). The first stage is a bottom-up proposal generation network that uses raw point cloud as input to generate accurate proposals by…

计算机视觉与模式识别 · 计算机科学 2019-07-25 Zetong Yang , Yanan Sun , Shu Liu , Xiaoyong Shen , Jiaya Jia

Transposed convolution is crucial for generating high-resolution outputs, yet has received little attention compared to convolution layers. In this work we revisit transposed convolution and introduce a novel layer that allows us to place…

计算机视觉与模式识别 · 计算机科学 2022-10-19 Stefano B. Blumberg , Daniele Raví , Mou-Cheng Xu , Matteo Figini , Iasonas Kokkinos , Daniel C. Alexander

Point cloud is an important type of 3D representation. However, directly applying convolutions on point clouds is challenging due to the sparse, irregular and unordered data structure. In this paper, we propose a novel Interpolated…

计算机视觉与模式识别 · 计算机科学 2019-08-14 Jiageng Mao , Xiaogang Wang , Hongsheng Li

Single-photon Lidar (SPL) offers unprecedented sensitivity and time resolution, which enables Satellite Laser Ranging (SLR) systems to identify space debris from distances spanning thousands of kilometers. However, existing SPL systems face…

数据分析、统计与概率 · 物理学 2024-01-10 Xialin Liu , Jia Qiang , Genghua Huang , Liang Zhang , Zheng Zhao , Rong Shu

Automated toll systems rely on proper classification of the passing vehicles. This is especially difficult when the images used for classification only cover parts of the vehicle. To obtain information about the whole vehicle. we…

计算机视觉与模式识别 · 计算机科学 2018-05-14 Georg Waltner , Michael Maurer , Thomas Holzmann , Patrick Ruprecht , Michael Opitz , Horst Possegger , Friedrich Fraundorfer , Horst Bischof

In recent years, the detection of infrared small targets using deep learning methods has garnered substantial attention due to notable advancements. To improve the detection capability of small targets, these methods commonly maintain a…

计算机视觉与模式识别 · 计算机科学 2024-02-09 Qianchen Mao , Qiang Li , Bingshu Wang , Yongjun Zhang , Tao Dai , C. L. Philip Chen

Two major challenges of 3D LiDAR Panoptic Segmentation (PS) are that point clouds of an object are surface-aggregated and thus hard to model the long-range dependency especially for large instances, and that objects are too close to…

计算机视觉与模式识别 · 计算机科学 2022-01-19 Shuangjie Xu , Rui Wan , Maosheng Ye , Xiaoyi Zou , Tongyi Cao

Dilated convolutions are widely used in deep semantic segmentation models as they can enlarge the filters' receptive field without adding additional weights nor sacrificing spatial resolution. However, as dilated convolutional filters do…

计算机视觉与模式识别 · 计算机科学 2022-01-20 Yujiang Wang , Mingzhi Dong , Jie Shen , Yiming Lin , Maja Pantic

In this paper we consider the problem of estimating a dense depth map from a set of sparse LiDAR points. We use techniques from compressed sensing and the recently developed Alternating Direction Neural Networks (ADNNs) to create a deep…

计算机视觉与模式识别 · 计算机科学 2018-03-28 Nathaniel Chodosh , Chaoyang Wang , Simon Lucey

In this paper, we introduce a self-supervised approach for video object segmentation without human labeled data.Specifically, we present Robust Pixel-level Matching Net-works (RPM-Net), a novel deep architecture that matches pixels between…

计算机视觉与模式识别 · 计算机科学 2019-10-11 Youngeun Kim , Seokeon Choi , Hankyeol Lee , Taekyung Kim , Changick Kim