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In this paper, we propose an anchor-free single-stage LiDAR-based 3D object detector -- RangeDet. The most notable difference with previous works is that our method is purely based on the range view representation. Compared with the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-19 Lue Fan , Xuan Xiong , Feng Wang , Naiyan Wang , Zhaoxiang Zhang

Point cloud analysis has drawn broader attentions due to its increasing demands in various fields. Despite the impressive performance has been achieved on several databases, researchers neglect the fact that the orientation of those point…

Computer Vision and Pattern Recognition · Computer Science 2019-11-07 Xiao Sun , Zhouhui Lian , Jianguo Xiao

Rotating object detection has wide applications in aerial photographs, remote sensing images, UAVs, etc. At present, most of the rotating object detection datasets focus on the field of remote sensing, and these images are usually shot in…

Computer Vision and Pattern Recognition · Computer Science 2021-08-09 Kai Feng , Weixing Li , Jun Han , Feng Pan , Dongdong Zheng

Anchor-based Siamese trackers have achieved remarkable advancements in accuracy, yet the further improvement is restricted by the lagged tracking robustness. We find the underlying reason is that the regression network in anchor-based…

Computer Vision and Pattern Recognition · Computer Science 2020-07-10 Zhipeng Zhang , Houwen Peng , Jianlong Fu , Bing Li , Weiming Hu

Oriented object detection in aerial images is a challenging task as the objects in aerial images are displayed in arbitrary directions and are usually densely packed. Current oriented object detection methods mainly rely on two-stage…

Computer Vision and Pattern Recognition · Computer Science 2020-09-01 Jingru Yi , Pengxiang Wu , Bo Liu , Qiaoying Huang , Hui Qu , Dimitris Metaxas

Confluence is a novel non-Intersection over Union (IoU) alternative to Non-Maxima Suppression (NMS) in bounding box post-processing in object detection. It overcomes the inherent limitations of IoU-based NMS variants to provide a more…

Computer Vision and Pattern Recognition · Computer Science 2022-08-04 Andrew Shepley , Greg Falzon , Paul Kwan

At present, the anchor-based or anchor-free models that use LiDAR point clouds for 3D object detection use the center assigner strategy to infer the 3D bounding boxes. However, in a real world scene, the LiDAR can only acquire a limited…

Computer Vision and Pattern Recognition · Computer Science 2022-03-08 Ruiqi Ma , Chi Chen , Bisheng Yang , Deren Li , Haiping Wang , Yangzi Cong , Zongtian Hu

In this paper, we propose a novel framework with 3D convolutional networks (ConvNets) for automated detection of pulmonary nodules from low-dose CT scans, which is a challenging yet crucial task for lung cancer early diagnosis and…

Computer Vision and Pattern Recognition · Computer Science 2017-08-15 Qi Dou , Hao Chen , Yueming Jin , Huangjing Lin , Jing Qin , Pheng-Ann Heng

Most state-of-the-art instance-level human parsing models adopt two-stage anchor-based detectors and, therefore, cannot avoid the heuristic anchor box design and the lack of analysis on a pixel level. To address these two issues, we have…

Computer Vision and Pattern Recognition · Computer Science 2022-09-14 Sanyi Zhang , Xiaochun Cao , Guo-Jun Qi , Zhanjie Song , Jie Zhou

3D object detection is receiving increasing attention from both industry and academia thanks to its wide applications in various fields. In this paper, we propose Point-Voxel Region-based Convolution Neural Networks (PV-RCNNs) for 3D object…

Computer Vision and Pattern Recognition · Computer Science 2022-11-09 Shaoshuai Shi , Li Jiang , Jiajun Deng , Zhe Wang , Chaoxu Guo , Jianping Shi , Xiaogang Wang , Hongsheng Li

Artificial intelligence-enhanced identification of organs, lesions, and other structures in medical imaging is typically done using convolutional neural networks (CNNs) designed to make voxel-accurate segmentations of the region of…

Glass-like objects such as windows, bottles, and mirrors exist widely in the real world. Sensing these objects has many applications, including robot navigation and grasping. However, this task is very challenging due to the arbitrary…

Computer Vision and Pattern Recognition · Computer Science 2021-12-14 Hao He , Xiangtai Li , Guangliang Cheng , Jianping Shi , Yunhai Tong , Gaofeng Meng , Véronique Prinet , Lubin Weng

Camouflaged objects are generally difficult to be detected in their natural environment even for human beings. In this paper, we propose a novel bio-inspired network, named the MirrorNet, that leverages both instance segmentation and mirror…

Computer Vision and Pattern Recognition · Computer Science 2021-03-12 Jinnan Yan , Trung-Nghia Le , Khanh-Duy Nguyen , Minh-Triet Tran , Thanh-Toan Do , Tam V. Nguyen

Accurate detection and segmentation of glomeruli in kidney tissue are essential for diagnostic applications. Traditional deep learning methods primarily rely on semantic segmentation, which often fails to precisely delineate adjacent…

Tissues and Organs · Quantitative Biology 2026-04-17 Behnaz Elhaminia , Catherine King , Jiaqi Lv , Lorraine Harper , Paul Moss , Owen Cain , Dimitrios Chanouzas , Shan E Ahmed Raza

We introduce G-CNN, an object detection technique based on CNNs which works without proposal algorithms. G-CNN starts with a multi-scale grid of fixed bounding boxes. We train a regressor to move and scale elements of the grid towards…

Computer Vision and Pattern Recognition · Computer Science 2016-04-27 Mahyar Najibi , Mohammad Rastegari , Larry S. Davis

Detecting objects from LiDAR point clouds is an important component of self-driving car technology as LiDAR provides high resolution spatial information. Previous work on point-cloud 3D object detection has re-purposed convolutional…

Computer Vision and Pattern Recognition · Computer Science 2019-12-04 Jiquan Ngiam , Benjamin Caine , Wei Han , Brandon Yang , Yuning Chai , Pei Sun , Yin Zhou , Xi Yi , Ouais Alsharif , Patrick Nguyen , Zhifeng Chen , Jonathon Shlens , Vijay Vasudevan

Three-dimensional objects are commonly represented as 3D boxes in a point-cloud. This representation mimics the well-studied image-based 2D bounding-box detection but comes with additional challenges. Objects in a 3D world do not follow any…

Computer Vision and Pattern Recognition · Computer Science 2021-10-11 Tianwei Yin , Xingyi Zhou , Philipp Krähenbühl

Retrieving object instances among cluttered scenes efficiently requires compact yet comprehensive regional image representations. Intuitively, object semantics can help build the index that focuses on the most relevant regions. However, due…

Computer Vision and Pattern Recognition · Computer Science 2019-05-15 Marvin Teichmann , Andre Araujo , Menglong Zhu , Jack Sim

In this paper, we present LaserNet, a computationally efficient method for 3D object detection from LiDAR data for autonomous driving. The efficiency results from processing LiDAR data in the native range view of the sensor, where the input…

Computer Vision and Pattern Recognition · Computer Science 2019-03-22 Gregory P. Meyer , Ankit Laddha , Eric Kee , Carlos Vallespi-Gonzalez , Carl K. Wellington

Benefiting from the great success of deep learning in computer vision, CNN-based object detection methods have drawn significant attentions. Various frameworks have been proposed which show awesome and robust performance for a large range…

Computer Vision and Pattern Recognition · Computer Science 2019-03-15 Yongliang Chen