no code implementations • ICCV 2023 • Xiang Guo, Jiadai Sun, Yuchao Dai, GuanYing Chen, Xiaoqing Ye, Xiao Tan, Errui Ding, Yumeng Zhang, Jingdong Wang
This paper proposes a neural radiance field (NeRF) approach for novel view synthesis of dynamic scenes using forward warping.
no code implementations • 8 Aug 2023 • Chen Wang, Jiadai Sun, Lina Liu, Chenming Wu, Zhelun Shen, Dayan Wu, Yuchao Dai, Liangjun Zhang
However, the shape-radiance ambiguity of radiance fields remains a challenge, especially in the sparse viewpoints setting.
no code implementations • 27 Jul 2023 • Chenming Wu, Jiadai Sun, Zhelun Shen, Liangjun Zhang
The key insight is that map information can be utilized as a prior to guiding the training of the radiance fields with uncertainty.
no code implementations • 26 Oct 2022 • Zhiyuan Zhang, Yuchao Dai, Bin Fan, Jiadai Sun, Mingyi He
In this paper, we propose to learn a robust task-specific feature descriptor to consistently describe the correct point correspondence under interference.
1 code implementation • 26 Oct 2022 • YuFei Wang, Yuchao Dai, Qi Liu, Peng Yang, Jiadai Sun, Bo Li
We find that existing depth-only methods can obtain satisfactory results in the areas where the measurement points are almost accurate and evenly distributed (denoted as normal areas), while the performance is limited in the areas where the foreground and background points are overlapped due to occlusion (denoted as overlap areas) and the areas where there are no measurement points around (denoted as blank areas) since the methods have no reliable input information in these areas.
no code implementations • 26 Oct 2022 • Zhiyuan Zhang, Jiadai Sun, Yuchao Dai, Bin Fan, Qi Liu
In response, this paper presents a novel end-to-end learning-based method to estimate the dense correspondence of 3D point clouds, in which the problem of point matching is formulated as a zero-one assignment problem to achieve a permutation matching matrix to implement the one-to-one principle fundamentally.
1 code implementation • 5 Jul 2022 • Jiadai Sun, Yuchao Dai, Xianjing Zhang, Jintao Xu, Rui Ai, Weihao Gu, Xieyuanli Chen
We also use a point refinement module via 3D sparse convolution to fuse the information from both LiDAR range image and point cloud representations and reduce the artifacts on the borders of the objects.
no code implementations • 15 Jun 2022 • Xiang Guo, GuanYing Chen, Yuchao Dai, Xiaoqing Ye, Jiadai Sun, Xiao Tan, Errui Ding
The second module contains a density and a color grid to model the geometry and density of the scene.
no code implementations • 24 Mar 2022 • Zhiyuan Zhang, Jiadai Sun, Yuchao Dai, Bin Fan, Mingyi He
3D point cloud registration is fragile to outliers, which are labeled as the points without corresponding points.
no code implementations • 24 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.
no code implementations • 29 Nov 2021 • Jiadai Sun, Yuxin Mao, Yuchao Dai, Yiran Zhong, Jianyuan Wang
The task of semi-supervised video object segmentation (VOS) has been greatly advanced and state-of-the-art performance has been made by dense matching-based methods.
no code implementations • 28 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.