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Wide-range and fine-grained vehicle detection plays a critical role in enabling active safety features in intelligent driving systems. However, existing vehicle detection methods based on rectangular bounding boxes (BBox) often struggle…

Computer Vision and Pattern Recognition · Computer Science 2023-09-18 Zhupeng Ye , Yinqi Li , Zejian Yuan

In this paper, we propose a Monocular 3D Single Stage object Detector (M3DSSD) with feature alignment and asymmetric non-local attention. Current anchor-based monocular 3D object detection methods suffer from feature mismatching. To…

Computer Vision and Pattern Recognition · Computer Science 2021-03-25 Shujie Luo , Hang Dai , Ling Shao , Yong Ding

In this work, we propose an efficient and accurate monocular 3D detection framework in single shot. Most successful 3D detectors take the projection constraint from the 3D bounding box to the 2D box as an important component. Four edges of…

Computer Vision and Pattern Recognition · Computer Science 2020-01-13 Peixuan Li , Huaici Zhao , Pengfei Liu , Feidao Cao

To boost a detector for single-frame 3D object detection, we present a new approach to train it to simulate features and responses following a detector trained on multi-frame point clouds. Our approach needs multi-frame point clouds only…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Wu Zheng , Li Jiang , Fanbin Lu , Yangyang Ye , Chi-Wing Fu

We revisit the problem of visual depth estimation in the context of autonomous vehicles. Despite the progress on monocular depth estimation in recent years, we show that the gap between monocular and stereo depth accuracy remains large$-$a…

Computer Vision and Pattern Recognition · Computer Science 2020-07-09 Nikolai Smolyanskiy , Alexey Kamenev , Stan Birchfield

Single shot detectors that are potentially faster and simpler than two-stage detectors tend to be more applicable to object detection in videos. Nevertheless, the extension of such object detectors from image to video is not trivial…

Computer Vision and Pattern Recognition · Computer Science 2020-07-08 Jiajun Deng , Yingwei Pan , Ting Yao , Wengang Zhou , Houqiang Li , Tao Mei

UAVs have become an essential photogrammetric measurement as they are affordable, easily accessible and versatile. Aerial images captured from UAVs have applications in small and large scale texture mapping, 3D modelling, object detection…

Computer Vision and Pattern Recognition · Computer Science 2020-12-22 Logambal Madhuanand , Francesco Nex , Michael Ying Yang

Depth-aware video panoptic segmentation tackles the inverse projection problem of restoring panoptic 3D point clouds from video sequences, where the 3D points are augmented with semantic classes and temporally consistent instance…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 Andra Petrovai , Sergiu Nedevschi

Monocular depth estimation, enabled by self-supervised learning, is a key technique for 3D perception in computer vision. However, it faces significant challenges in real-world scenarios, which encompass adverse weather variations, motion…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Runze Chen , Haiyong Luo , Fang Zhao , Jingze Yu , Yupeng Jia , Juan Wang , Xuepeng Ma

Monocular 3D object detection plays a crucial role in autonomous driving. However, existing monocular 3D detection algorithms depend on 3D labels derived from LiDAR measurements, which are costly to acquire for new datasets and challenging…

Computer Vision and Pattern Recognition · Computer Science 2024-09-25 Fulong Ma , Xiaoyang Yan , Guoyang Zhao , Xiaojie Xu , Yuxuan Liu , Jun Ma , Ming Liu

The objective of this paper is to learn context- and depth-aware feature representation to solve the problem of monocular 3D object detection. We make following contributions: (i) rather than appealing to the complicated pseudo-LiDAR based…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Li Wang , Liang Du , Xiaoqing Ye , Yanwei Fu , Guodong Guo , Xiangyang Xue , Jianfeng Feng , Li Zhang

We propose and study open-vocabulary monocular 3D detection, a novel task that aims to detect objects of any categores in metric 3D space from a single RGB image. Existing 3D object detectors either rely on costly sensors such as LiDAR or…

Computer Vision and Pattern Recognition · Computer Science 2025-11-27 Jin Yao , Hao Gu , Xuweiyi Chen , Jiayun Wang , Zezhou Cheng

Semi-supervised object detection is crucial for 3D scene understanding, efficiently addressing the limitation of acquiring large-scale 3D bounding box annotations. Existing methods typically employ a teacher-student framework with…

Computer Vision and Pattern Recognition · Computer Science 2023-12-06 Cheng-Ju Ho , Chen-Hsuan Tai , Yen-Yu Lin , Ming-Hsuan Yang , Yi-Hsuan Tsai

3D object detection is an essential task in autonomous driving. Recent techniques excel with highly accurate detection rates, provided the 3D input data is obtained from precise but expensive LiDAR technology. Approaches based on cheaper…

Computer Vision and Pattern Recognition · Computer Science 2020-02-25 Yan Wang , Wei-Lun Chao , Divyansh Garg , Bharath Hariharan , Mark Campbell , Kilian Q. Weinberger

Estimating accurate 3D locations of objects from monocular images is a challenging problem because of lacking depth. Previous work shows that utilizing the object's keypoint projection constraints to estimate multiple depth candidates…

Computer Vision and Pattern Recognition · Computer Science 2022-09-28 Yingyan Li , Yuntao Chen , Jiawei He , Zhaoxiang Zhang

The ability to accurately detect and localize objects is recognized as being the most important for the perception of self-driving cars. From 2D to 3D object detection, the most difficult is to determine the distance from the ego-vehicle to…

Computer Vision and Pattern Recognition · Computer Science 2021-05-31 Nguyen Anh Minh Mai , Pierre Duthon , Louahdi Khoudour , Alain Crouzil , Sergio A. Velastin

Monocular 3D object detection has attracted widespread attention due to its potential to accurately obtain object 3D localization from a single image at a low cost. Depth estimation is an essential but challenging subtask of monocular 3D…

Computer Vision and Pattern Recognition · Computer Science 2024-04-05 Longfei Yan , Pei Yan , Shengzhou Xiong , Xuanyu Xiang , Yihua Tan

Monocular 3D object tracking aims to estimate temporally consistent 3D object poses across video frames, enabling autonomous agents to reason about scene dynamics. However, existing state-of-the-art approaches are fully supervised and rely…

Robotics · Computer Science 2026-03-20 Nikhil Gosala , B. Ravi Kiran , Senthil Yogamani , Abhinav Valada

Monocular 3D object detection (M3OD) has long faced challenges due to data scarcity caused by high annotation costs and inherent 2D-to-3D ambiguity. Although various weakly supervised methods and pseudo-labeling methods have been proposed…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Seokyeong Lee , Sithu Aung , Junyong Choi , Seungryong Kim , Ig-Jae Kim , Junghyun Cho

Self-supervised monocular depth estimation (SSMDE) aims to predict the dense depth map of a monocular image, by learning depth from RGB image sequences, eliminating the need for ground-truth depth labels. Although this approach simplifies…

Computer Vision and Pattern Recognition · Computer Science 2025-02-21 Wonhyeok Choi , Kyumin Hwang , Wei Peng , Minwoo Choi , Sunghoon Im