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In this paper, we propose PointRCNN for 3D object detection from raw point cloud. The whole framework is composed of two stages: stage-1 for the bottom-up 3D proposal generation and stage-2 for refining proposals in the canonical…

计算机视觉与模式识别 · 计算机科学 2019-05-17 Shaoshuai Shi , Xiaogang Wang , Hongsheng Li

While deep Convolutional Neural Networks (CNNs) have shown extraordinary capability of modelling specific noise and denoising, they still perform poorly on real-world noisy images. The main reason is that the real-world noise is more…

计算机视觉与模式识别 · 计算机科学 2019-10-23 Yiyun Zhao , Zhuqing Jiang , Aidong Men , Guodong Ju

We propose Shift R-CNN, a hybrid model for monocular 3D object detection, which combines deep learning with the power of geometry. We adapt a Faster R-CNN network for regressing initial 2D and 3D object properties and combine it with a…

计算机视觉与模式识别 · 计算机科学 2019-05-27 Andretti Naiden , Vlad Paunescu , Gyeongmo Kim , ByeongMoon Jeon , Marius Leordeanu

In this paper, we first investigate why typical two-stage methods are not as fast as single-stage, fast detectors like YOLO and SSD. We find that Faster R-CNN and R-FCN perform an intensive computation after or before RoI warping. Faster…

计算机视觉与模式识别 · 计算机科学 2017-11-27 Zeming Li , Chao Peng , Gang Yu , Xiangyu Zhang , Yangdong Deng , Jian Sun

Multi-head detectors typically employ a features-fused-pyramid-neck for multi-scale detection and are widely adopted in the industry. However, this approach faces feature misalignment when representations from different hierarchical levels…

计算机视觉与模式识别 · 计算机科学 2025-05-20 Hulin Li

Three dimensional (3D) object recognition is becoming a key desired capability for many computer vision systems such as autonomous vehicles, service robots and surveillance drones to operate more effectively in unstructured environments.…

计算机视觉与模式识别 · 计算机科学 2021-08-25 Chenxi Xiao , Juan Wachs

Despite notable advancements in the field of computer vision, the precise detection of tiny objects continues to pose a significant challenge, largely owing to the minuscule pixel representation allocated to these objects in imagery data.…

计算机视觉与模式识别 · 计算机科学 2025-04-22 Hou-I Liu , Yu-Wen Tseng , Kai-Cheng Chang , Pin-Jyun Wang , Hong-Han Shuai , Wen-Huang Cheng

3D object detection with LiDAR point clouds plays an important role in autonomous driving perception module that requires high speed, stability and accuracy. However, the existing point-based methods are challenging to reach the speed…

计算机视觉与模式识别 · 计算机科学 2021-10-13 Jiahui Fu , Guanghui Ren , Yunpeng Chen , Si Liu

We present an improved version of PointRCNN for 3D object detection, in which a multi-branch backbone network is adopted to handle the non-uniform density of point clouds. An uncertainty-based sampling policy is proposed to deal with the…

计算机视觉与模式识别 · 计算机科学 2021-01-11 Jie Li , Yu Hu

LIDAR point clouds and RGB-images are both extremely essential for 3D object detection. So many state-of-the-art 3D detection algorithms dedicate in fusing these two types of data effectively. However, their fusion methods based on Birds…

计算机视觉与模式识别 · 计算机科学 2019-12-03 Liang Xie , Chao Xiang , Zhengxu Yu , Guodong Xu , Zheng Yang , Deng Cai , Xiaofei He

Given the wide diffusion of deep neural network architectures for computer vision tasks, several new applications are nowadays more and more feasible. Among them, a particular attention has been recently given to instance segmentation, by…

计算机视觉与模式识别 · 计算机科学 2022-06-22 Leonardo Rossi , Akbar Karimi , Andrea Prati

We propose a 3D object detection method for autonomous driving by fully exploiting the sparse and dense, semantic and geometry information in stereo imagery. Our method, called Stereo R-CNN, extends Faster R-CNN for stereo inputs to…

计算机视觉与模式识别 · 计算机科学 2019-04-11 Peiliang Li , Xiaozhi Chen , Shaojie Shen

Current state-of-the-art convolutional architectures for object detection are manually designed. Here we aim to learn a better architecture of feature pyramid network for object detection. We adopt Neural Architecture Search and discover a…

计算机视觉与模式识别 · 计算机科学 2019-04-17 Golnaz Ghiasi , Tsung-Yi Lin , Ruoming Pang , Quoc V. Le

Current state-of-the-art two-stage detectors generate oriented proposals through time-consuming schemes. This diminishes the detectors' speed, thereby becoming the computational bottleneck in advanced oriented object detection systems. This…

计算机视觉与模式识别 · 计算机科学 2021-08-13 Xingxing Xie , Gong Cheng , Jiabao Wang , Xiwen Yao , Junwei Han

Low level features like edges and textures play an important role in accurately localizing instances in neural networks. In this paper, we propose an architecture which improves feature pyramid networks commonly used instance segmentation…

计算机视觉与模式识别 · 计算机科学 2019-04-02 Yongqing Sun , Pranav Shenoy K P , Jun Shimamura , Atsushi Sagata

Remote sensing target detection aims to identify and locate critical targets within remote sensing images, finding extensive applications in agriculture and urban planning. Feature pyramid networks (FPNs) are commonly used to extract…

计算机视觉与模式识别 · 计算机科学 2024-04-03 Hanqian Li , Ruinan Zhang , Ye Pan , Junchi Ren , Fei Shen

Current neural networks-based object detection approaches processing LiDAR point clouds are generally trained from one kind of LiDAR sensors. However, their performances decrease when they are tested with data coming from a different LiDAR…

计算机视觉与模式识别 · 计算机科学 2020-12-11 Ruddy Théodose , Dieumet Denis , Thierry Chateau , Vincent Frémont , Paul Checchin

We present Siam R-CNN, a Siamese re-detection architecture which unleashes the full power of two-stage object detection approaches for visual object tracking. We combine this with a novel tracklet-based dynamic programming algorithm, which…

计算机视觉与模式识别 · 计算机科学 2020-04-03 Paul Voigtlaender , Jonathon Luiten , Philip H. S. Torr , Bastian Leibe

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

Jointly integrating aspect ratio and context has been extensively studied and shown performance improvement in traditional object detection systems such as the DPMs. It, however, has been largely ignored in deep neural network based…

计算机视觉与模式识别 · 计算机科学 2017-03-23 Bo Li , Tianfu Wu , Shuai Shao , Lun Zhang , Rufeng Chu