Search Results for author: Lang Nie

Found 22 papers, 14 papers with code

SGFormer: Spherical Geometry Transformer for 360 Depth Estimation

no code implementations23 Apr 2024 Junsong Zhang, Zisong Chen, Chunyu Lin, Lang Nie, Zhijie Shen, Junda Huang, Yao Zhao

Panoramic distortion poses a significant challenge in 360 depth estimation, particularly pronounced at the north and south poles.

Depth Estimation Position

Digging into contrastive learning for robust depth estimation with diffusion models

no code implementations15 Apr 2024 Jiyuan Wang, Chunyu Lin, Lang Nie, Kang Liao, Shuwei Shao, Yao Zhao

In this paper, we propose a novel robust depth estimation method called D4RD, featuring a custom contrastive learning mode tailored for diffusion models to mitigate performance degradation in complex environments.

Contrastive Learning Denoising +2

Eliminating Warping Shakes for Unsupervised Online Video Stitching

1 code implementation11 Mar 2024 Lang Nie, Chunyu Lin, Kang Liao, Yun Zhang, Shuaicheng Liu, Yao Zhao

In this paper, we retarget video stitching to an emerging issue, named warping shake, when extending image stitching to video stitching.

Image Stitching Video Stabilization

Semi-Supervised Coupled Thin-Plate Spline Model for Rotation Correction and Beyond

1 code implementation24 Jan 2024 Lang Nie, Chunyu Lin, Kang Liao, Shuaicheng Liu, Yao Zhao

To break this bottleneck, we propose the coupled thin-plate spline model (CoupledTPS), which iteratively couples multiple TPS with limited control points into a more flexible and powerful transformation.

360 Layout Estimation via Orthogonal Planes Disentanglement and Multi-view Geometric Consistency Perception

no code implementations26 Dec 2023 Zhijie Shen, Chunyu Lin, Junsong Zhang, Lang Nie, Kang Liao, Yao Zhao

Existing panoramic layout estimation solutions tend to recover room boundaries from a vertically compressed sequence, yielding imprecise results as the compression process often muddles the semantics between various planes.

Disentanglement

WeatherDepth: Curriculum Contrastive Learning for Self-Supervised Depth Estimation under Adverse Weather Conditions

1 code implementation9 Oct 2023 Jiyuan Wang, Chunyu Lin, Lang Nie, Shujun Huang, Yao Zhao, Xing Pan, Rui Ai

In this paper, we propose WeatherDepth, a self-supervised robust depth estimation model with curriculum contrastive learning, to tackle performance degradation in complex weather conditions.

Contrastive Learning Depth Estimation +2

GAFlow: Incorporating Gaussian Attention into Optical Flow

1 code implementation ICCV 2023 Ao Luo, Fan Yang, Xin Li, Lang Nie, Chunyu Lin, Haoqiang Fan, Shuaicheng Liu

Moreover, for reliable motion analysis, we provide a new Gaussian-Guided Attention Module (GGAM) which not only inherits properties from Gaussian distribution to instinctively revolve around the neighbor fields of each point but also is empowered to put the emphasis on contextually related regions during matching.

Optical Flow Estimation Representation Learning

Deep Learning for Camera Calibration and Beyond: A Survey

1 code implementation19 Mar 2023 Kang Liao, Lang Nie, Shujuan Huang, Chunyu Lin, Jing Zhang, Yao Zhao, Moncef Gabbouj, DaCheng Tao

In this paper, we provide a comprehensive survey of learning-based camera calibration techniques, by analyzing their strengths and limitations.

Camera Calibration

Disentangling Orthogonal Planes for Indoor Panoramic Room Layout Estimation with Cross-Scale Distortion Awareness

1 code implementation CVPR 2023 Zhijie Shen, Zishuo Zheng, Chunyu Lin, Lang Nie, Kang Liao, Shuai Zheng, Yao Zhao

Based on the Manhattan World assumption, most existing indoor layout estimation schemes focus on recovering layouts from vertically compressed 1D sequences.

Room Layout Estimation Segmentation

Unsupervised OmniMVS: Efficient Omnidirectional Depth Inference via Establishing Pseudo-Stereo Supervision

no code implementations20 Feb 2023 Zisong Chen, Chunyu Lin, Lang Nie, Kang Liao, Yao Zhao

In this paper, we propose the first unsupervised omnidirectional MVS framework based on multiple fisheye images.

Parallax-Tolerant Unsupervised Deep Image Stitching

1 code implementation ICCV 2023 Lang Nie, Chunyu Lin, Kang Liao, Shuaicheng Liu, Yao Zhao

First, we propose a robust and flexible warp to model the image registration from global homography to local thin-plate spline motion.

Image Registration Image Stitching

RecRecNet: Rectangling Rectified Wide-Angle Images by Thin-Plate Spline Model and DoF-based Curriculum Learning

1 code implementation ICCV 2023 Kang Liao, Lang Nie, Chunyu Lin, Zishuo Zheng, Yao Zhao

In this work, we explore constructing a win-win representation on both content and boundary by contributing a new learning model, i. e., Rectangling Rectification Network (RecRecNet).

Neural Contourlet Network for Monocular 360 Depth Estimation

1 code implementation3 Aug 2022 Zhijie Shen, Chunyu Lin, Lang Nie, Kang Liao, Yao Zhao

For a monocular 360 image, depth estimation is a challenging because the distortion increases along the latitude.

Depth Estimation

Deep Rotation Correction without Angle Prior

1 code implementation7 Jul 2022 Lang Nie, Chunyu Lin, Kang Liao, Shuaicheng Liu, Yao Zhao

To this end, we leverage a neural network to predict the optical flows that can warp the tilted images to be perceptually horizontal.

Optical Flow Estimation

PanoFormer: Panorama Transformer for Indoor 360 Depth Estimation

1 code implementation17 Mar 2022 Zhijie Shen, Chunyu Lin, Kang Liao, Lang Nie, Zishuo Zheng, Yao Zhao

In particular, we divide patches on the spherical tangent domain into tokens to reduce the negative effect of panoramic distortions.

Depth Estimation Semantic Segmentation

Deep Rectangling for Image Stitching: A Learning Baseline

1 code implementation CVPR 2022 Lang Nie, Chunyu Lin, Kang Liao, Shuaicheng Liu, Yao Zhao

In this paper, we address these issues by proposing the first deep learning solution to image rectangling.

Image Stitching

Depth-Aware Multi-Grid Deep Homography Estimation with Contextual Correlation

1 code implementation6 Jul 2021 Lang Nie, Chunyu Lin, Kang Liao, Shuaicheng Liu, Yao Zhao

Homography estimation is an important task in computer vision applications, such as image stitching, video stabilization, and camera calibration.

Camera Calibration Homography Estimation +2

Learning Edge-Preserved Image Stitching from Large-Baseline Deep Homography

no code implementations11 Dec 2020 Lang Nie, Chunyu Lin, Kang Liao, Yao Zhao

In this paper, we propose an image stitching learning framework, which consists of a large-baseline deep homography module and an edge-preserved deformation module.

Image Stitching

Cannot find the paper you are looking for? You can Submit a new open access paper.