Search Results for author: Guofeng Zhang

Found 59 papers, 22 papers with code

Multi-View Neural 3D Reconstruction of Micro-/Nanostructures with Atomic Force Microscopy

1 code implementation21 Jan 2024 Shuo Chen, Mao Peng, Yijin Li, Bing-Feng Ju, Hujun Bao, Yuan-Liu Chen, Guofeng Zhang

However, conventional AFM scanning struggles to reconstruct complex 3D micro-/nanostructures precisely due to limitations such as incomplete sample topography capturing and tip-sample convolution artifacts.

3D Reconstruction Surface Reconstruction

On Metzler positive systems on hypergraphs

no code implementations8 Jan 2024 Shaoxuan Cui, Guofeng Zhang, Hildeberto Jardón-Kojakhmetov, Ming Cao

To be more precise, in this paper, we first extend the concept of a Metzler matrix to a Metzler tensor and then describe some useful properties of such tensors.

DifFlow3D: Toward Robust Uncertainty-Aware Scene Flow Estimation with Diffusion Model

no code implementations29 Nov 2023 Jiuming Liu, Guangming Wang, Weicai Ye, Chaokang Jiang, Jinru Han, Zhe Liu, Guofeng Zhang, Dalong Du, Hesheng Wang

Furthermore, we also develop an uncertainty estimation module within diffusion to evaluate the reliability of estimated scene flow.

Scene Flow Estimation

Hard Label Black Box Node Injection Attack on Graph Neural Networks

1 code implementation22 Nov 2023 Yu Zhou, Zihao Dong, Guofeng Zhang, Jingchen Tang

In this work, we will propose a non-targeted Hard Label Black Box Node Injection Attack on Graph Neural Networks, which to the best of our knowledge, is the first of its kind.

Graph Classification Node Classification

RD-VIO: Robust Visual-Inertial Odometry for Mobile Augmented Reality in Dynamic Environments

1 code implementation23 Oct 2023 Jinyu Li, Xiaokun Pan, Gan Huang, Ziyang Zhang, Nan Wang, Hujun Bao, Guofeng Zhang

In this work, we design a novel visual-inertial odometry (VIO) system called RD-VIO to handle both of these two problems.

Depth Completion with Multiple Balanced Bases and Confidence for Dense Monocular SLAM

no code implementations8 Sep 2023 Weijian Xie, Guanyi Chu, Quanhao Qian, Yihao Yu, Hai Li, Danpeng Chen, Shangjin Zhai, Nan Wang, Hujun Bao, Guofeng Zhang

In this paper, we propose a novel method that integrates a light-weight depth completion network into a sparse SLAM system using a multi-basis depth representation, so that dense mapping can be performed online even on a mobile phone.

Depth Completion

Multi-Modal Neural Radiance Field for Monocular Dense SLAM with a Light-Weight ToF Sensor

no code implementations ICCV 2023 Xinyang Liu, Yijin Li, Yanbin Teng, Hujun Bao, Guofeng Zhang, yinda zhang, Zhaopeng Cui

Specifically, we propose a multi-modal implicit scene representation that supports rendering both the signals from the RGB camera and light-weight ToF sensor which drives the optimization by comparing with the raw sensor inputs.

Pose Tracking

Graph-based Asynchronous Event Processing for Rapid Object Recognition

no code implementations ICCV 2021 Yijin Li, Han Zhou, Bangbang Yang, Ye Zhang, Zhaopeng Cui, Hujun Bao, Guofeng Zhang

Different from traditional video cameras, event cameras capture asynchronous events stream in which each event encodes pixel location, trigger time, and the polarity of the brightness changes.

graph construction Object Recognition

Adding 3D Geometry Control to Diffusion Models

no code implementations13 Jun 2023 Wufei Ma, Qihao Liu, Jiahao Wang, Xiaoding Yuan, Angtian Wang, Yi Zhang, Zihao Xiao, Guofeng Zhang, Beijia Lu, Ruxiao Duan, Yongrui Qi, Adam Kortylewski, Yaoyao Liu, Alan Yuille

With explicit 3D geometry control, we can easily change the 3D structures of the objects in the generated images and obtain ground-truth 3D annotations automatically.

3D Pose Estimation

DiffInDScene: Diffusion-based High-Quality 3D Indoor Scene Generation

1 code implementation1 Jun 2023 Xiaoliang Ju, Zhaoyang Huang, Yijin Li, Guofeng Zhang, Yu Qiao, Hongsheng Li

In addition to the scene generation, the final part of DiffInDScene can be used as a post-processing module to refine the 3D reconstruction results from multi-view stereo.

3D Reconstruction Image Generation +1

Robust 3D-aware Object Classification via Discriminative Render-and-Compare

no code implementations24 May 2023 Artur Jesslen, Guofeng Zhang, Angtian Wang, Alan Yuille, Adam Kortylewski

Using differentiable rendering, we estimate the 3D object pose by minimizing the reconstruction error between the mesh and the feature representation of the target image.

Classification Image Classification +2

A bioinspired three-stage model for camouflaged object detection

no code implementations22 May 2023 Tianyou Chen, Jin Xiao, Xiaoguang Hu, Guofeng Zhang, Shaojie Wang

Furthermore, considering the significance of multi-scale information, we have designed a multi-scale feature enhancement module that enlarges the receptive field while preserving detailed structural cues.

Object object-detection +1

Long-term Visual Localization with Mobile Sensors

no code implementations CVPR 2023 Shen Yan, Yu Liu, Long Wang, Zehong Shen, Zhen Peng, Haomin Liu, Maojun Zhang, Guofeng Zhang, Xiaowei Zhou

Despite the remarkable advances in image matching and pose estimation, image-based localization of a camera in a temporally-varying outdoor environment is still a challenging problem due to huge appearance disparity between query and reference images caused by illumination, seasonal and structural changes.

Image-Based Localization Pose Estimation +1

SINE: Semantic-driven Image-based NeRF Editing with Prior-guided Editing Field

no code implementations CVPR 2023 Chong Bao, yinda zhang, Bangbang Yang, Tianxing Fan, Zesong Yang, Hujun Bao, Guofeng Zhang, Zhaopeng Cui

Despite the great success in 2D editing using user-friendly tools, such as Photoshop, semantic strokes, or even text prompts, similar capabilities in 3D areas are still limited, either relying on 3D modeling skills or allowing editing within only a few categories.

PATS: Patch Area Transportation with Subdivision for Local Feature Matching

no code implementations CVPR 2023 Junjie Ni, Yijin Li, Zhaoyang Huang, Hongsheng Li, Hujun Bao, Zhaopeng Cui, Guofeng Zhang

However, estimating scale differences between these patches is non-trivial since the scale differences are determined by both relative camera poses and scene structures, and thus spatially varying over image pairs.

Graph Matching Optical Flow Estimation +2

EC-SfM: Efficient Covisibility-based Structure-from-Motion for Both Sequential and Unordered Images

1 code implementation21 Feb 2023 Zhichao Ye, Chong Bao, Xin Zhou, Haomin Liu, Hujun Bao, Guofeng Zhang

Based on this general image connection, we propose a unified framework to efficiently reconstruct sequential images, unordered images, and the mixture of these two.

Deep Active Contours for Real-time 6-DoF Object Tracking

no code implementations ICCV 2023 Long Wang, Shen Yan, Jianan Zhen, Yu Liu, Maojun Zhang, Guofeng Zhang, Xiaowei Zhou

Specifically, given an initial pose, we project the object model to the image plane to obtain the initial contour and use a lightweight network to predict how the contour should move to match the true object boundary, which provides the gradients to optimize the object pose.

Computational Efficiency Object +1

Clothed Human Performance Capture With a Double-Layer Neural Radiance Fields

no code implementations CVPR 2023 Kangkan Wang, Guofeng Zhang, Suxu Cong, Jian Yang

Previous methods capture the performance of full humans with a personalized template or recover the garments from a single frame with static human poses.

DPS-Net: Deep Polarimetric Stereo Depth Estimation

no code implementations ICCV 2023 Chaoran Tian, Weihong Pan, Zimo Wang, Mao Mao, Guofeng Zhang, Hujun Bao, Ping Tan, Zhaopeng Cui

Stereo depth estimation usually struggles to deal with textureless scenes for both traditional and learning-based methods due to the inherent dependence on image correspondence matching.

Stereo Depth Estimation

Improving Feature-based Visual Localization by Geometry-Aided Matching

1 code implementation16 Nov 2022 Hailin Yu, Youji Feng, Weicai Ye, Mingxuan Jiang, Hujun Bao, Guofeng Zhang

We apply GAM to a new hierarchical visual localization pipeline and show that GAM can effectively improve the robustness and accuracy of localization.

3D Feature Matching Pose Estimation +1

Vox-Fusion: Dense Tracking and Mapping with Voxel-based Neural Implicit Representation

1 code implementation28 Oct 2022 Xingrui Yang, Hai Li, Hongjia Zhai, Yuhang Ming, Yuqian Liu, Guofeng Zhang

In this work, we present a dense tracking and mapping system named Vox-Fusion, which seamlessly fuses neural implicit representations with traditional volumetric fusion methods.

Hierarchical and Progressive Image Matting

no code implementations13 Oct 2022 Yu Qiao, Yuhao Liu, Ziqi Wei, Yuxin Wang, Qiang Cai, Guofeng Zhang, Xin Yang

In this paper, we propose an end-to-end Hierarchical and Progressive Attention Matting Network (HAttMatting++), which can better predict the opacity of the foreground from single RGB images without additional input.

Image Matting SSIM

Generative Category-Level Shape and Pose Estimation with Semantic Primitives

1 code implementation3 Oct 2022 Guanglin Li, Yifeng Li, Zhichao Ye, Qihang Zhang, Tao Kong, Zhaopeng Cui, Guofeng Zhang

Then, by using a SIM(3)-invariant shape descriptor, we gracefully decouple the shape and pose of an object, thus supporting latent shape optimization of target objects in arbitrary poses.

6D Pose Estimation using RGBD Object

IntrinsicNeRF: Learning Intrinsic Neural Radiance Fields for Editable Novel View Synthesis

1 code implementation ICCV 2023 Weicai Ye, Shuo Chen, Chong Bao, Hujun Bao, Marc Pollefeys, Zhaopeng Cui, Guofeng Zhang

Existing inverse rendering combined with neural rendering methods can only perform editable novel view synthesis on object-specific scenes, while we present intrinsic neural radiance fields, dubbed IntrinsicNeRF, which introduce intrinsic decomposition into the NeRF-based neural rendering method and can extend its application to room-scale scenes.

Clustering Inverse Rendering +2

DELTAR: Depth Estimation from a Light-weight ToF Sensor and RGB Image

no code implementations27 Sep 2022 Yijin Li, Xinyang Liu, Wenqi Dong, Han Zhou, Hujun Bao, Guofeng Zhang, yinda zhang, Zhaopeng Cui

Light-weight time-of-flight (ToF) depth sensors are small, cheap, low-energy and have been massively deployed on mobile devices for the purposes like autofocus, obstacle detection, etc.

3D Reconstruction Depth Completion +2

NeuralMarker: A Framework for Learning General Marker Correspondence

no code implementations19 Sep 2022 Zhaoyang Huang, Xiaokun Pan, Weihong Pan, Weikang Bian, Yan Xu, Ka Chun Cheung, Guofeng Zhang, Hongsheng Li

We tackle the problem of estimating correspondences from a general marker, such as a movie poster, to an image that captures such a marker.

Video Editing

Vox-Surf: Voxel-based Implicit Surface Representation

1 code implementation21 Aug 2022 Hai Li, Xingrui Yang, Hongjia Zhai, Yuqian Liu, Hujun Bao, Guofeng Zhang

Virtual content creation and interaction play an important role in modern 3D applications such as AR and VR.

valid

NeuMesh: Learning Disentangled Neural Mesh-based Implicit Field for Geometry and Texture Editing

no code implementations25 Jul 2022 Bangbang Yang, Chong Bao, Junyi Zeng, Hujun Bao, yinda zhang, Zhaopeng Cui, Guofeng Zhang

Very recently neural implicit rendering techniques have been rapidly evolved and shown great advantages in novel view synthesis and 3D scene reconstruction.

3D Scene Reconstruction Neural Rendering +1

DeFlowSLAM: Self-Supervised Scene Motion Decomposition for Dynamic Dense SLAM

1 code implementation18 Jul 2022 Weicai Ye, Xingyuan Yu, Xinyue Lan, Yuhang Ming, Jinyu Li, Hujun Bao, Zhaopeng Cui, Guofeng Zhang

We present a novel dual-flow representation of scene motion that decomposes the optical flow into a static flow field caused by the camera motion and another dynamic flow field caused by the objects' movements in the scene.

Pose Estimation Simultaneous Localization and Mapping

Factorized and Controllable Neural Re-Rendering of Outdoor Scene for Photo Extrapolation

no code implementations14 Jul 2022 Boming Zhao, Bangbang Yang, Zhenyang Li, Zuoyue Li, Guofeng Zhang, Jiashu Zhao, Dawei Yin, Zhaopeng Cui, Hujun Bao

Expanding an existing tourist photo from a partially captured scene to a full scene is one of the desired experiences for photography applications.

PVO: Panoptic Visual Odometry

1 code implementation CVPR 2023 Weicai Ye, Xinyue Lan, Shuo Chen, Yuhang Ming, Xingyuan Yu, Hujun Bao, Zhaopeng Cui, Guofeng Zhang

We present PVO, a novel panoptic visual odometry framework to achieve more comprehensive modeling of the scene motion, geometry, and panoptic segmentation information.

Optical Flow Estimation Pose Estimation +3

VIP-SLAM: An Efficient Tightly-Coupled RGB-D Visual Inertial Planar SLAM

no code implementations4 Jul 2022 Danpeng Chen, Shuai Wang, Weijian Xie, Shangjin Zhai, Nan Wang, Hujun Bao, Guofeng Zhang

Even if the plane parameters are involved in the optimization, we effectively simplify the back-end map by using planar structures.

Neural 3D Scene Reconstruction with the Manhattan-world Assumption

1 code implementation CVPR 2022 Haoyu Guo, Sida Peng, Haotong Lin, Qianqian Wang, Guofeng Zhang, Hujun Bao, Xiaowei Zhou

Based on the Manhattan-world assumption, planar constraints are employed to regularize the geometry in floor and wall regions predicted by a 2D semantic segmentation network.

2D Semantic Segmentation 3D Reconstruction +2

Neural Rendering in a Room: Amodal 3D Understanding and Free-Viewpoint Rendering for the Closed Scene Composed of Pre-Captured Objects

no code implementations5 May 2022 Bangbang Yang, yinda zhang, Yijin Li, Zhaopeng Cui, Sean Fanello, Hujun Bao, Guofeng Zhang

We, as human beings, can understand and picture a familiar scene from arbitrary viewpoints given a single image, whereas this is still a grand challenge for computers.

Data Augmentation Neural Rendering +1

Hybrid Tracker with Pixel and Instance for Video Panoptic Segmentation

no code implementations2 Mar 2022 Weicai Ye, Xinyue Lan, Ge Su, Hujun Bao, Zhaopeng Cui, Guofeng Zhang

HybridTracker performs pixel tracker and instance tracker in parallel to obtain the association matrices, which are fused into a matching matrix.

Optical Flow Estimation Segmentation +1

Robust Self-Supervised LiDAR Odometry via Representative Structure Discovery and 3D Inherent Error Modeling

1 code implementation27 Feb 2022 Yan Xu, Junyi Lin, Jianping Shi, Guofeng Zhang, Xiaogang Wang, Hongsheng Li

The correct ego-motion estimation basically relies on the understanding of correspondences between adjacent LiDAR scans.

Motion Estimation

CGiS-Net: Aggregating Colour, Geometry and Implicit Semantic Features for Indoor Place Recognition

1 code implementation4 Feb 2022 Yuhang Ming, Xingrui Yang, Guofeng Zhang, Andrew Calway

We describe a novel approach to indoor place recognition from RGB point clouds based on aggregating low-level colour and geometry features with high-level implicit semantic features.

Semantic Segmentation

Efficient Quantum Feature Extraction for CNN-based Learning

no code implementations4 Jan 2022 Tong Dou, Guofeng Zhang, Wei Cui

Recent work has begun to explore the potential of parametrized quantum circuits (PQCs) as general function approximators.

SceneSqueezer: Learning To Compress Scene for Camera Relocalization

no code implementations CVPR 2022 Luwei Yang, Rakesh Shrestha, Wenbo Li, Shuaicheng Liu, Guofeng Zhang, Zhaopeng Cui, Ping Tan

Standard visual localization methods build a priori 3D model of a scene which is used to establish correspondences against the 2D keypoints in a query image.

Camera Relocalization Image Registration +3

Deep-CNN based Robotic Multi-Class Under-Canopy Weed Control in Precision Farming

no code implementations28 Dec 2021 Yayun Du, Guofeng Zhang, Darren Tsang, M. Khalid Jawed

Smart weeding systems to perform plant-specific operations can contribute to the sustainability of agriculture and the environment.

Management

LatentHuman: Shape-and-Pose Disentangled Latent Representation for Human Bodies

no code implementations30 Nov 2021 Sandro Lombardi, Bangbang Yang, Tianxing Fan, Hujun Bao, Guofeng Zhang, Marc Pollefeys, Zhaopeng Cui

In this work, we propose a novel neural implicit representation for the human body, which is fully differentiable and optimizable with disentangled shape and pose latent spaces.

3D Reconstruction motion retargeting +1

Learning Object-Compositional Neural Radiance Field for Editable Scene Rendering

no code implementations ICCV 2021 Bangbang Yang, yinda zhang, Yinghao Xu, Yijin Li, Han Zhou, Hujun Bao, Guofeng Zhang, Zhaopeng Cui

In this paper, we present a novel neural scene rendering system, which learns an object-compositional neural radiance field and produces realistic rendering with editing capability for a clustered and real-world scene.

Neural Rendering Novel View Synthesis +1

VS-Net: Voting with Segmentation for Visual Localization

1 code implementation CVPR 2021 Zhaoyang Huang, Han Zhou, Yijin Li, Bangbang Yang, Yan Xu, Xiaowei Zhou, Hujun Bao, Guofeng Zhang, Hongsheng Li

To address this problem, we propose a novel visual localization framework that establishes 2D-to-3D correspondences between the query image and the 3D map with a series of learnable scene-specific landmarks.

Segmentation Semantic Segmentation +1

LIFE: Lighting Invariant Flow Estimation

no code implementations7 Apr 2021 Zhaoyang Huang, Xiaokun Pan, Runsen Xu, Yan Xu, Ka Chun Cheung, Guofeng Zhang, Hongsheng Li

However, local image contents are inevitably ambiguous and error-prone during the cross-image feature matching process, which hinders downstream tasks.

Detecting quantum entanglement with unsupervised learning

1 code implementation8 Mar 2021 YiWei Chen, Yu Pan, Guofeng Zhang, Shuming Cheng

Quantum properties, such as entanglement and coherence, are indispensable resources in various quantum information processing tasks.

You Don't Only Look Once: Constructing Spatial-Temporal Memory for Integrated 3D Object Detection and Tracking

no code implementations ICCV 2021 Jiaming Sun, Yiming Xie, Siyu Zhang, Linghao Chen, Guofeng Zhang, Hujun Bao, Xiaowei Zhou

In this work, we propose a novel system for integrated 3D object detection and tracking, which uses a dynamic object occupancy map and previous object states as spatial-temporal memory to assist object detection in future frames.

3D Object Detection Object +2

Super interference fringes of two-photon photoluminescence in individual Au nanoparticles: the critical role of the intermediate state

no code implementations24 Dec 2020 Yao Li, Yonggang Yang, Chengbing Qin, Yunrui Song, Shuangping Han, Guofeng Zhang, Ruiyun Chen, Jianyong Hu, Liantuan Xiao, Suotang Jia

Here, we presented two-photon photoluminescence (TPPL) measurements on individual Au nanobipyramids (AuNP) to reveal their ultrafast dynamics by two-pulse excitation on a global time scale ranging from sub-femtosecond to tens of picoseconds.

Optics Mesoscale and Nanoscale Physics Quantum Physics

SelfVoxeLO: Self-supervised LiDAR Odometry with Voxel-based Deep Neural Networks

no code implementations19 Oct 2020 Yan Xu, Zhaoyang Huang, Kwan-Yee Lin, Xinge Zhu, Jianping Shi, Hujun Bao, Guofeng Zhang, Hongsheng Li

To suit our network to self-supervised learning, we design several novel loss functions that utilize the inherent properties of LiDAR point clouds.

Self-Supervised Learning

Mobile3DRecon: Real-time Monocular 3D Reconstruction on a Mobile Phone

no code implementations ISMAR 2020 Xingbin Yang, Liyang Zhou, Hanqing Jiang, Zhongliang Tang, Yuanbo Wang, Hujun Bao, Guofeng Zhang

The proposed mesh generation module incrementally fuses each estimated keyframe depth map to an online dense surface mesh, which is useful for achieving realistic AR effects such as occlusions and collisions.

3D Reconstruction Monocular Depth Estimation +1

Depth Completion from Sparse LiDAR Data with Depth-Normal Constraints

no code implementations ICCV 2019 Yan Xu, Xinge Zhu, Jianping Shi, Guofeng Zhang, Hujun Bao, Hongsheng Li

Most of existing methods directly train a network to learn a mapping from sparse depth inputs to dense depth maps, which has difficulties in utilizing the 3D geometric constraints and handling the practical sensor noises.

Autonomous Driving Depth Completion

Quantum tensor singular value decomposition with applications to recommendation systems

no code implementations3 Oct 2019 Xiaoqiang Wang, Lejia Gu, Joseph Heung-wing Joseph Lee, Guofeng Zhang

In this paper, we present a quantum singular value decomposition algorithm for third-order tensors inspired by the classical algorithm of tensor singular value decomposition (t-svd) and then extend it to order-$p$ tensors.

Recommendation Systems

ICE-BA: Incremental, Consistent and Efficient Bundle Adjustment for Visual-Inertial SLAM

1 code implementation CVPR 2018 Hao-Min Liu, Mingyu Chen, Guofeng Zhang, Hujun Bao, Yingze Bao

However, jointly using visual and inertial measurements to optimize SLAM objective functions is a problem of high computational complexity.

Computational Efficiency Pose Estimation

Robust Keyframe-based Dense SLAM with an RGB-D Camera

8 code implementations14 Nov 2017 Hao-Min Liu, Chen Li, Guojun Chen, Guofeng Zhang, Michael Kaess, Hujun Bao

In this paper, we present RKD-SLAM, a robust keyframe-based dense SLAM approach for an RGB-D camera that can robustly handle fast motion and dense loop closure, and run without time limitation in a moderate size scene.

ENFT: Efficient Non-Consecutive Feature Tracking for Robust Structure-from-Motion

3 code implementations27 Oct 2015 Guofeng Zhang, Hao-Min Liu, Zilong Dong, Jiaya Jia, Tien-Tsin Wong, Hujun Bao

Our framework consists of steps of solving the feature `dropout' problem when indistinctive structures, noise or large image distortion exists, and of rapidly recognizing and joining common features located in different subsequences.

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