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Semi- and weakly-supervised learning have recently attracted considerable attention in the object detection literature since they can alleviate the cost of annotation needed to successfully train deep learning models. State-of-art…

Computer Vision and Pattern Recognition · Computer Science 2022-06-20 Akhil Meethal , Marco Pedersoli , Zhongwen Zhu , Francisco Perdigon Romero , Eric Granger

Monocular 3D object detection is a key problem for autonomous vehicles, as it provides a solution with simple configuration compared to typical multi-sensor systems. The main challenge in monocular 3D detection lies in accurately predicting…

Computer Vision and Pattern Recognition · Computer Science 2021-03-25 Cody Reading , Ali Harakeh , Julia Chae , Steven L. Waslander

Detecting and localizing objects in the real 3D space, which plays a crucial role in scene understanding, is particularly challenging given only a monocular image due to the geometric information loss during imagery projection. We propose…

Computer Vision and Pattern Recognition · Computer Science 2021-04-20 Zengyi Qin , Jinglu Wang , Yan Lu

Estimating 3D orientation and translation of objects is essential for infrastructure-less autonomous navigation and driving. In case of monocular vision, successful methods have been mainly based on two ingredients: (i) a network generating…

Computer Vision and Pattern Recognition · Computer Science 2020-02-25 Zechen Liu , Zizhang Wu , Roland Tóth

3D object detection based on monocular camera data is a key enabler for autonomous driving. The task however, is ill-posed due to lack of depth information in 2D images. Recent deep learning methods show promising results to recover depth…

Computer Vision and Pattern Recognition · Computer Science 2020-05-18 Felix Nobis , Fabian Brunhuber , Simon Janssen , Johannes Betz , Markus Lienkamp

Pixel-wise clean annotation is necessary for fully-supervised semantic segmentation, which is laborious and expensive to obtain. In this paper, we propose a weakly supervised 2D semantic segmentation model by incorporating sparse bounding…

Computer Vision and Pattern Recognition · Computer Science 2020-12-02 Weixuan Sun , Jing Zhang , Nick Barnes

Inferring object 3D position and orientation from a single RGB camera is a foundational task in computer vision with many important applications. Traditionally, 3D object detection methods are trained in a fully-supervised setup, requiring…

Computer Vision and Pattern Recognition · Computer Science 2025-06-23 Jan Skvrna , Lukas Neumann

The annotation of 3D datasets is required for semantic-segmentation and object detection in scene understanding. In this paper we present a framework for the weakly supervision of a point clouds transformer that is used for 3D object…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Zuojin Tang , Bo Sun , Tongwei Ma , Daosheng Li , Zhenhui Xu

This paper reports a new continuous 3D loss function for learning depth from monocular images. The dense depth prediction from a monocular image is supervised using sparse LIDAR points, which enables us to leverage available open source…

Computer Vision and Pattern Recognition · Computer Science 2020-08-11 Minghan Zhu , Maani Ghaffari , Yuanxin Zhong , Pingping Lu , Zhong Cao , Ryan M. Eustice , Huei Peng

3D object detection is a fundamental and challenging task for 3D scene understanding, and the monocular-based methods can serve as an economical alternative to the stereo-based or LiDAR-based methods. However, accurately detecting objects…

Computer Vision and Pattern Recognition · Computer Science 2022-01-27 Zhiyu Chong , Xinzhu Ma , Hong Zhang , Yuxin Yue , Haojie Li , Zhihui Wang , Wanli Ouyang

Accurately detecting 3D objects from monocular images in dynamic roadside scenarios remains a challenging problem due to varying camera perspectives and unpredictable scene conditions. This paper introduces a two-stage training strategy to…

Computer Vision and Pattern Recognition · Computer Science 2024-08-29 Sondos Mohamed , Walter Zimmer , Ross Greer , Ahmed Alaaeldin Ghita , Modesto Castrillón-Santana , Mohan Trivedi , Alois Knoll , Salvatore Mario Carta , Mirko Marras

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 novel 3D single-shot object detection method for detecting vehicles in monocular RGB images. Our approach lifts 2D detections to 3D space by predicting additional regression and classification parameters and hence…

Computer Vision and Pattern Recognition · Computer Science 2020-06-24 Nils Gählert , Jun-Jun Wan , Nicolas Jourdan , Jan Finkbeiner , Uwe Franke , Joachim Denzler

Object detection when provided image-level labels instead of instance-level labels (i.e., bounding boxes) during training is an important problem in computer vision, since large scale image datasets with instance-level labels are extremely…

Computer Vision and Pattern Recognition · Computer Science 2017-03-01 Ziang Yan , Jian Liang , Weishen Pan , Jin Li , Changshui Zhang

Despite the remarkable accuracy of deep neural networks in object detection, they are costly to train and scale due to supervision requirements. Particularly, learning more object categories typically requires proportionally more bounding…

Computer Vision and Pattern Recognition · Computer Science 2021-03-16 Alireza Zareian , Kevin Dela Rosa , Derek Hao Hu , Shih-Fu Chang

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

Image-only and pseudo-LiDAR representations are commonly used for monocular 3D object detection. However, methods based on them have shortcomings of either not well capturing the spatial relationships in neighbored image pixels or being…

Computer Vision and Pattern Recognition · Computer Science 2021-04-14 Liang Peng , Fei Liu , Senbo Yan , Xiaofei He , Deng Cai

Compared to typical multi-sensor systems, monocular 3D object detection has attracted much attention due to its simple configuration. However, there is still a significant gap between LiDAR-based and monocular-based methods. In this paper,…

Computer Vision and Pattern Recognition · Computer Science 2024-02-21 Chenxi Huang , Tong He , Haidong Ren , Wenxiao Wang , Binbin Lin , Deng Cai

As a crucial task of autonomous driving, 3D object detection has made great progress in recent years. However, monocular 3D object detection remains a challenging problem due to the unsatisfactory performance in depth estimation. Most…

Computer Vision and Pattern Recognition · Computer Science 2024-04-25 Yinmin Zhang , Xinzhu Ma , Shuai Yi , Jun Hou , Zhihui Wang , Wanli Ouyang , Dan Xu

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