Search Results for author: Dingfu Zhou

Found 26 papers, 14 papers with code

Digging Into Uncertainty-based Pseudo-label for Robust Stereo Matching

1 code implementation31 Jul 2023 Zhelun Shen, Xibin Song, Yuchao Dai, Dingfu Zhou, Zhibo Rao, Liangjun Zhang

Due to the domain differences and unbalanced disparity distribution across multiple datasets, current stereo matching approaches are commonly limited to a specific dataset and generalize poorly to others.

Monocular Depth Estimation Pseudo Label +1

LiDAR-CS Dataset: LiDAR Point Cloud Dataset with Cross-Sensors for 3D Object Detection

1 code implementation29 Jan 2023 Jin Fang, Dingfu Zhou, Jingjing Zhao, Chenming Wu, Chulin Tang, Cheng-Zhong Xu, Liangjun Zhang

This setting results in two distinct domain gaps: scenarios and sensors, making it difficult to analyze and evaluate the method accurately.

3D Object Detection Autonomous Driving +2

ProposalContrast: Unsupervised Pre-training for LiDAR-based 3D Object Detection

1 code implementation26 Jul 2022 Junbo Yin, Dingfu Zhou, Liangjun Zhang, Jin Fang, Cheng-Zhong Xu, Jianbing Shen, Wenguan Wang

Existing approaches for unsupervised point cloud pre-training are constrained to either scene-level or point/voxel-level instance discrimination.

3D Object Detection object-detection +2

Semi-supervised 3D Object Detection with Proficient Teachers

1 code implementation26 Jul 2022 Junbo Yin, Jin Fang, Dingfu Zhou, Liangjun Zhang, Cheng-Zhong Xu, Jianbing Shen, Wenguan Wang

To reduce the dependence on large supervision, semi-supervised learning (SSL) based approaches have been proposed.

3D Object Detection Autonomous Driving +3

Distilling Ensemble of Explanations for Weakly-Supervised Pre-Training of Image Segmentation Models

2 code implementations4 Jul 2022 Xuhong LI, Haoyi Xiong, Yi Liu, Dingfu Zhou, Zeyu Chen, Yaqing Wang, Dejing Dou

Though image classification datasets could provide the backbone networks with rich visual features and discriminative ability, they are incapable of fully pre-training the target model (i. e., backbone+segmentation modules) in an end-to-end manner.

Classification Image Classification +3

A Representation Separation Perspective to Correspondences-free Unsupervised 3D Point Cloud Registration

no code implementations24 Mar 2022 Zhiyuan Zhang, Jiadai Sun, Yuchao Dai, Dingfu Zhou, Xibin Song, Mingyi He

Existing correspondences-free methods generally learn the holistic representation of the entire point cloud, which is fragile for partial and noisy point clouds.

Point Cloud Registration

End-to-end Learning the Partial Permutation Matrix for Robust 3D Point Cloud Registration

no code implementations28 Oct 2021 Zhiyuan Zhang, Jiadai Sun, Yuchao Dai, Dingfu Zhou, Xibin Song, Mingyi He

Even though considerable progress has been made in deep learning-based 3D point cloud processing, how to obtain accurate correspondences for robust registration remains a major challenge because existing hard assignment methods cannot deal with outliers naturally.

Point Cloud Registration

AutoShape: Real-Time Shape-Aware Monocular 3D Object Detection

1 code implementation ICCV 2021 Zongdai Liu, Dingfu Zhou, Feixiang Lu, Jin Fang, Liangjun Zhang

For generating the ground truth of 2D/3D keypoints, an automatic model-fitting approach has been proposed by fitting the deformed 3D object model and the object mask in the 2D image.

Autonomous Driving Monocular 3D Object Detection +2

FusionPainting: Multimodal Fusion with Adaptive Attention for 3D Object Detection

1 code implementation23 Jun 2021 Shaoqing Xu, Dingfu Zhou, Jin Fang, Junbo Yin, Zhou Bin, Liangjun Zhang

Then the segmentation results from different sensors are adaptively fused based on the proposed attention-based semantic fusion module.

3D Object Detection Autonomous Driving +3

MapFusion: A General Framework for 3D Object Detection with HDMaps

no code implementations10 Mar 2021 Jin Fang, Dingfu Zhou, Xibin Song, Liangjun Zhang

In this paper, we propose a simple but effective framework - MapFusion to integrate the map information into modern 3D object detector pipelines.

3D Object Detection Autonomous Driving +2

DVI: Depth Guided Video Inpainting for Autonomous Driving

2 code implementations ECCV 2020 Miao Liao, Feixiang Lu, Dingfu Zhou, Sibo Zhang, Wei Li, Ruigang Yang

To get clear street-view and photo-realistic simulation in autonomous driving, we present an automatic video inpainting algorithm that can remove traffic agents from videos and synthesize missing regions with the guidance of depth/point cloud.

Autonomous Driving Image Inpainting +2

PerMO: Perceiving More at Once from a Single Image for Autonomous Driving

no code implementations16 Jul 2020 Feixiang Lu, Zongdai Liu, Xibin Song, Dingfu Zhou, Wei Li, Hui Miao, Miao Liao, Liangjun Zhang, Bin Zhou, Ruigang Yang, Dinesh Manocha

We present a novel approach to detect, segment, and reconstruct complete textured 3D models of vehicles from a single image for autonomous driving.

3D Reconstruction Autonomous Driving +3

PCW-Net: Pyramid Combination and Warping Cost Volume for Stereo Matching

2 code implementations23 Jun 2020 Zhelun Shen, Yuchao Dai, Xibin Song, Zhibo Rao, Dingfu Zhou, Liangjun Zhang

First, we construct combination volumes on the upper levels of the pyramid and develop a cost volume fusion module to integrate them for initial disparity estimation.

Disparity Estimation Domain Generalization +1

Channel Attention based Iterative Residual Learning for Depth Map Super-Resolution

no code implementations CVPR 2020 Xibin Song, Yuchao Dai, Dingfu Zhou, Liu Liu, Wei Li, Hongdng Li, Ruigang Yang

Second, we propose a new framework for real-world DSR, which consists of four modules : 1) An iterative residual learning module with deep supervision to learn effective high-frequency components of depth maps in a coarse-to-fine manner; 2) A channel attention strategy to enhance channels with abundant high-frequency components; 3) A multi-stage fusion module to effectively re-exploit the results in the coarse-to-fine process; and 4) A depth refinement module to improve the depth map by TGV regularization and input loss.

Benchmarking Depth Map Super-Resolution

Learning 2D-3D Correspondences To Solve The Blind Perspective-n-Point Problem

1 code implementation15 Mar 2020 Liu Liu, Dylan Campbell, Hongdong Li, Dingfu Zhou, Xibin Song, Ruigang Yang

Conventional absolute camera pose via a Perspective-n-Point (PnP) solver often assumes that the correspondences between 2D image pixels and 3D points are given.

IoU Loss for 2D/3D Object Detection

1 code implementation11 Aug 2019 Dingfu Zhou, Jin Fang, Xibin Song, Chenye Guan, Junbo Yin, Yuchao Dai, Ruigang Yang

In 2D/3D object detection task, Intersection-over-Union (IoU) has been widely employed as an evaluation metric to evaluate the performance of different detectors in the testing stage.

3D Object Detection Object +1

Ground Plane based Absolute Scale Estimation for Monocular Visual Odometry

no code implementations3 Mar 2019 Dingfu Zhou, Yuchao Dai, Hongdong Li

Recovering the absolute metric scale from a monocular camera is a challenging but highly desirable problem for monocular camera-based systems.

Monocular Visual Odometry

ApolloCar3D: A Large 3D Car Instance Understanding Benchmark for Autonomous Driving

no code implementations CVPR 2019 Xibin Song, Peng Wang, Dingfu Zhou, Rui Zhu, Chenye Guan, Yuchao Dai, Hao Su, Hongdong Li, Ruigang Yang

Specifically, we first segment each car with a pre-trained Mask R-CNN, and then regress towards its 3D pose and shape based on a deformable 3D car model with or without using semantic keypoints.

3D Car Instance Understanding Autonomous Driving

Augmented LiDAR Simulator for Autonomous Driving

no code implementations17 Nov 2018 Jin Fang, Dingfu Zhou, Feilong Yan, Tongtong Zhao, Feihu Zhang, Yu Ma, Liang Wang, Ruigang Yang

Instead, we can simply deploy a vehicle with a LiDAR scanner to sweep the street of interests to obtain the background point cloud, based on which annotated point cloud can be automatically generated.

Autonomous Driving

RealPoint3D: Point Cloud Generation from a Single Image with Complex Background

1 code implementation8 Sep 2018 Yan Xia, Yang Zhang, Dingfu Zhou, Xinyu Huang, Cheng Wang, Ruigang Yang

Then, the image together with the retrieved shape model is fed into the proposed network to generate the fine-grained 3D point cloud.

3D Generation Point Cloud Generation

The ApolloScape Open Dataset for Autonomous Driving and its Application

2 code implementations16 Mar 2018 Xinyu Huang, Peng Wang, Xinjing Cheng, Dingfu Zhou, Qichuan Geng, Ruigang Yang

In this paper, we provide a sensor fusion scheme integrating camera videos, consumer-grade motion sensors (GPS/IMU), and a 3D semantic map in order to achieve robust self-localization and semantic segmentation for autonomous driving.

Autonomous Driving Instance Segmentation +3

Pixel-variant Local Homography for Fisheye Stereo Rectification Minimizing Resampling Distortion

no code implementations12 Jul 2017 Dingfu Zhou, Yuchao Dai, Hongdong Li

First, we prove that there indeed exist enough degrees of freedom to apply pixel-wise local homography for stereo rectification.

3D Reconstruction Stereo Matching +1

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