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We propose PSFormer, an effective point transformer model for 3D salient object detection. PSFormer is an encoder-decoder network that takes full advantage of transformers to model the contextual information in both multi-scale point- and…

Computer Vision and Pattern Recognition · Computer Science 2022-10-31 Baian Chen , Lipeng Gu , Xin Zhuang , Yiyang Shen , Weiming Wang , Mingqiang Wei

Monocular 3D object detection is very challenging in autonomous driving due to the lack of depth information. This paper proposes a one-stage monocular 3D object detection algorithm based on multi-scale depth stratification, which uses the…

Computer Vision and Pattern Recognition · Computer Science 2022-04-29 Zhouzhen Xie , Yuying Song , Jingxuan Wu , Zecheng Li , Chunyi Song , Zhiwei Xu

Monocular 3D object detection aims to extract the 3D position and properties of objects from a 2D input image. This is an ill-posed problem with a major difficulty lying in the information loss by depth-agnostic cameras. Conventional…

Computer Vision and Pattern Recognition · Computer Science 2020-09-01 Lijie Liu , Chufan Wu , Jiwen Lu , Lingxi Xie , Jie Zhou , Qi Tian

Object pose estimation is a core perception task that enables, for example, object grasping and scene understanding. The widely available, inexpensive and high-resolution RGB sensors and CNNs that allow for fast inference based on this…

Monocular 3D detection (Mono3D) aims to infer 3D bounding boxes from a single RGB image. Without auxiliary sensors such as LiDAR, this task is inherently ill-posed since the 3D-to-2D projection introduces depth ambiguity. Previous works…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Zhihao Zhang , Abhinav Kumar , Girish Chandar Ganesan , Xiaoming Liu

As an inherently ill-posed problem, depth estimation from single images is the most challenging part of monocular 3D object detection (M3OD). Many existing methods rely on preconceived assumptions to bridge the missing spatial information…

Computer Vision and Pattern Recognition · Computer Science 2022-05-20 Zhuoling Li , Zhan Qu , Yang Zhou , Jianzhuang Liu , Haoqian Wang , Lihui Jiang

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…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Ziyue Feng , Longlong Jing , Peng Yin , Yingli Tian , Bing Li

3D object detection from monocular image(s) is a challenging and long-standing problem of computer vision. To combine information from different perspectives without troublesome 2D instance tracking, recent methods tend to aggregate…

Computer Vision and Pattern Recognition · Computer Science 2022-09-01 Jianlin Liu , Zhuofei Huang , Dihe Huang , Shang Xu , Ying Chen , Yong Liu

We propose a 3D object detection system with multi-sensor refinement in the context of autonomous driving. In our framework, the monocular camera serves as the fundamental sensor for 2D object proposal and initial 3D bounding box…

Computer Vision and Pattern Recognition · Computer Science 2019-11-20 Peiliang Li , Siqi Liu , Shaojie Shen

Reusable model design becomes desirable with the rapid expansion of computer vision and machine learning applications. In this paper, we focus on the reusability of pre-trained deep convolutional models. Specifically, different from…

Computer Vision and Pattern Recognition · Computer Science 2017-07-21 Xiu-Shen Wei , Chen-Lin Zhang , Jianxin Wu , Chunhua Shen , Zhi-Hua Zhou

We tackle the problem of monocular 3D object detection across different sensors, environments, and camera setups. In this paper, we introduce a novel unsupervised domain adaptation approach, MonoCT, that generates highly accurate pseudo…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Johannes Meier , Louis Inchingolo , Oussema Dhaouadi , Yan Xia , Jacques Kaiser , Daniel Cremers

Monocular 3D object detection (M3OD) is a significant yet inherently challenging task in autonomous driving due to absence of explicit depth cues in a single RGB image. In this paper, we strive to boost currently underperforming monocular…

Computer Vision and Pattern Recognition · Computer Science 2023-11-08 Weijia Zhang , Dongnan Liu , Chao Ma , Weidong Cai

In this paper, we propose enhancing monocular depth estimation by adding 3D points as depth guidance. Unlike existing depth completion methods, our approach performs well on extremely sparse and unevenly distributed point clouds, which…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 Lam Huynh , Phong Nguyen-Ha , Jiri Matas , Esa Rahtu , Janne Heikkila

This work proposes a process for efficiently training a point-wise object detector that enables localizing objects and computing their 6D poses in cluttered and occluded scenes. Accurate pose estimation is typically a requirement for robust…

Computer Vision and Pattern Recognition · Computer Science 2019-02-22 Jean-Philippe Mercier , Chaitanya Mitash , Philippe Giguère , Abdeslam Boularias

Recent Transformer-based 3D object detectors learn point cloud features either from point- or voxel-based representations. However, the former requires time-consuming sampling while the latter introduces quantization errors. In this paper,…

Computer Vision and Pattern Recognition · Computer Science 2023-05-12 Honghui Yang , Wenxiao Wang , Minghao Chen , Binbin Lin , Tong He , Hua Chen , Xiaofei He , Wanli Ouyang

Pseudo-LiDAR 3D detectors have made remarkable progress in monocular 3D detection by enhancing the capability of perceiving depth with depth estimation networks, and using LiDAR-based 3D detection architectures. The advanced stereo 3D…

Computer Vision and Pattern Recognition · Computer Science 2022-03-07 Yi-Nan Chen , Hang Dai , Yong Ding

In this work, we propose a novel single-shot and keypoints-based framework for monocular 3D objects detection using only RGB images, called KM3D-Net. We design a fully convolutional model to predict object keypoints, dimension, and…

Computer Vision and Pattern Recognition · Computer Science 2020-09-03 Peixuan Li

Monocular 3D human pose estimation remains a challenging and ill-posed problem, particularly in real-time settings and unconstrained environments. While direct imageto-3D approaches require large annotated datasets and heavy models,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-24 Mohamed Adjel

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

Monocular 3D object detection encounters occlusion problems in many application scenarios, such as traffic monitoring, pedestrian monitoring, etc., which leads to serious false negative. Multi-view object detection effectively solves this…

Computer Vision and Pattern Recognition · Computer Science 2021-09-23 Li Haoran , Duan Zicheng , Ma Mingjun , Chen Yaran , Li Jiaqi , Zhao Dongbin