no code implementations • ECCV 2020 • Haoang Li, Pyojin Kim, Ji Zhao, Kyungdon Joo, Zhipeng Cai, Zhe Liu , Yun-hui Liu
In Atlanta world, given a set of image lines, we aim to cluster them by the unknown-but-sought VPs whose number is unknown.
1 code implementation • 1 Sep 2024 • XiaoYu Zhang, Guangwei Liu, Zihao Liu, Ningyi Xu, Yunhui Liu, Ji Zhao
To fully exploit a historical map, we propose two novel modules to enhance BEV features and map element queries.
no code implementations • 28 Feb 2024 • Banglei Guan, Ji Zhao, Laurent Kneip
A minimal configuration of six PCs is required for generalized cameras.
1 code implementation • 27 Feb 2024 • Zihao Liu, XiaoYu Zhang, Guangwei Liu, Ji Zhao, Ningyi Xu
In autonomous driving, the high-definition (HD) map plays a crucial role in localization and planning.
1 code implementation • 22 Jun 2023 • Banglei Guan, Ji Zhao
We present a novel method to compute the relative pose of multi-camera systems using two affine correspondences (ACs).
1 code implementation • 15 Apr 2023 • Tongya Zheng, Zunlei Feng, Tianli Zhang, Yunzhi Hao, Mingli Song, Xingen Wang, Xinyu Wang, Ji Zhao, Chun Chen
The proposed TIP-GNN focuses on the bilevel graph structure in temporal networks: besides the explicit interaction graph, a node's sequential interactions can also be constructed as a transition graph.
no code implementations • CVPR 2021 • Haoang Li, Kai Chen, Ji Zhao, Jiangliu Wang, Pyojin Kim, Zhe Liu, Yun-hui Liu
In contrast, we propose the first approach suitable for both structured and unstructured scenes.
no code implementations • 24 Feb 2021 • Ji Zhao, Banglei Guan
This solver generation method is also naturally applied to relative pose estimation from PCs, resulting in a new six-point method for multi-camera systems.
1 code implementation • CVPR 2021 • Yu Chen, Ji Zhao, Laurent Kneip
We push the envelope of rotation averaging by leveraging the advantages of a global RA method and a local RA method.
no code implementations • ICCV 2021 • Banglei Guan, Ji Zhao, Daniel Barath, Friedrich Fraundorfer
We propose three novel solvers for estimating the relative pose of a multi-camera system from affine correspondences (ACs).
no code implementations • CVPR 2020 • Ji Zhao, Wanting Xu, Laurent Kneip
We present a convex optimization approach for generalized essential matrix (GEM) estimation.
no code implementations • CVPR 2020 • Banglei Guan, Ji Zhao, Zhang Li, Fang Sun, Friedrich Fraundorfer
In this paper we present four cases of minimal solutions for two-view relative pose estimation by exploiting the affine transformation between feature points and we demonstrate efficient solvers for these cases.
no code implementations • 26 Aug 2019 • Jia-Wang Bian, Yu-Huan Wu, Ji Zhao, Yun Liu, Le Zhang, Ming-Ming Cheng, Ian Reid
According to this, we propose three high-quality matching systems and a Coarse-to-Fine RANSAC estimator.
1 code implementation • 21 Mar 2019 • Ji Zhao
In this paper, we propose a certifiably globally optimal and efficient solver for the $N$-point problem.
no code implementations • 18 Mar 2019 • Ji Zhao, Meiyu Yu, Huan Chen, Boning Li, Lingyu Zhang, Qi Song, Li Ma, Hua Chai, Jieping Ye
An accurate similarity calculation is challenging since the mismatch between a query and a retrieval text may exist in the case of a mistyped query or an alias inquiry.
no code implementations • 9 Nov 2018 • Ji Zhao, Zhiqiang Chen, Li Zhang, Xin Jin
In this paper, we propose a sinogram inpainting network (SIN) to solve limited-angle CT reconstruction problem, which is a very challenging ill-posed issue and of great interest for several clinical applications.
Medical Physics Image and Video Processing
no code implementations • 23 Oct 2014 • Ji Zhao, Deyu Meng, Jiayi Ma
Typically, the region search methods project the score of a classifier into an image plane, and then search the region with the maximal score.
no code implementations • 20 Jul 2014 • Ji Zhao, Lian-Tao Wang, Ricardo Cabral, Fernando de la Torre
There are four main benefits of our approach: (1) Our approach accommodates non-linear additive kernels such as the popular $\chi^2$ and intersection kernel; (2) our approach is able to handle both regions in images and spatio-temporal regions in videos in a unified way; (3) the feature selection problem is convex, and both problems can be solved using a scalable reduced gradient method; (4) we point out strong connections with multiple kernel learning and multiple instance learning approaches.
no code implementations • 12 May 2014 • Ji Zhao, Deyu Meng
Taking advantage of sampling of Fourier transform, FastMMD decreases the time complexity for MMD calculation from $O(N^2 d)$ to $O(L N d)$, where $N$ and $d$ are the size and dimension of the sample set, respectively.
no code implementations • CVPR 2013 • Jiayi Ma, Ji Zhao, Jinwen Tian, Zhuowen Tu, Alan L. Yuille
In the second step, we estimate the transformation using a robust estimator called L 2 E. This is the main novelty of our approach and it enables us to deal with the noise and outliers which arise in the correspondence step.