Search Results for author: Jiahao Pang

Found 18 papers, 11 papers with code

PIVOT-Net: Heterogeneous Point-Voxel-Tree-based Framework for Point Cloud Compression

no code implementations11 Feb 2024 Jiahao Pang, Kevin Bui, Dong Tian

The universality of the point cloud format enables many 3D applications, making the compression of point clouds a critical phase in practice.

WrappingNet: Mesh Autoencoder via Deep Sphere Deformation

no code implementations29 Aug 2023 Eric Lei, Muhammad Asad Lodhi, Jiahao Pang, Junghyun Ahn, Dong Tian

There have been recent efforts to learn more meaningful representations via fixed length codewords from mesh data, since a mesh serves as a complete model of underlying 3D shape compared to a point cloud.

GRASP-Net: Geometric Residual Analysis and Synthesis for Point Cloud Compression

1 code implementation9 Sep 2022 Jiahao Pang, Muhammad Asad Lodhi, Dong Tian

Specifically, a point-based network is applied to convert the erratic local details to latent features residing on the coarse point cloud.

Graph-Based Depth Denoising & Dequantization for Point Cloud Enhancement

no code implementations9 Nov 2021 Xue Zhang, Gene Cheung, Jiahao Pang, Yash Sanghvi, Abhiram Gnanasambandam, Stanley H. Chan

Specifically, we model depth formation as a combined process of signal-dependent noise addition and non-uniform log-based quantization.

Graph Learning Image Denoising +1

FESTA: Flow Estimation via Spatial-Temporal Attention for Scene Point Clouds

1 code implementation CVPR 2021 HaiYan Wang, Jiahao Pang, Muhammad A. Lodhi, YingLi Tian, Dong Tian

Scene flow depicts the dynamics of a 3D scene, which is critical for various applications such as autonomous driving, robot navigation, AR/VR, etc.

Autonomous Driving Robot Navigation +1

Graph Signal Processing for Geometric Data and Beyond: Theory and Applications

no code implementations5 Aug 2020 Wei Hu, Jiahao Pang, Xian-Ming Liu, Dong Tian, Chia-Wen Lin, Anthony Vetro

Geometric data acquired from real-world scenes, e. g., 2D depth images, 3D point clouds, and 4D dynamic point clouds, have found a wide range of applications including immersive telepresence, autonomous driving, surveillance, etc.

Autonomous Driving

Deep End-to-End Alignment and Refinement for Time-of-Flight RGB-D Module

1 code implementation ICCV 2019 Di Qiu, Jiahao Pang, Wenxiu Sun, Chengxi Yang

Recently, it is increasingly popular to equip mobile RGB cameras with Time-of-Flight (ToF) sensors for active depth sensing.

Optical Flow Estimation

DSR: Direct Self-rectification for Uncalibrated Dual-lens Cameras

1 code implementation26 Sep 2018 Ruichao Xiao, Wenxiu Sun, Jiahao Pang, Qiong Yan, Jimmy Ren

Our method is evaluated on both real-istic and synthetic stereo image pairs, and produces supe-rior results compared to the calibrated rectification or otherself-rectification approaches

Stereo Matching Stereo Matching Hand

Deep Graph Laplacian Regularization for Robust Denoising of Real Images

1 code implementation31 Jul 2018 Jin Zeng, Jiahao Pang, Wenxiu Sun, Gene Cheung

In this work, we combine the robustness merit of model-based approaches and the learning power of data-driven approaches for real image denoising.

Domain Generalization Image Denoising +1

3D Point Cloud Denoising using Graph Laplacian Regularization of a Low Dimensional Manifold Model

no code implementations20 Mar 2018 Jin Zeng, Gene Cheung, Michael Ng, Jiahao Pang, Cheng Yang

Due to discrete observations of the patches on the manifold, we approximate the manifold dimension computation defined in the continuous domain with a patch-based graph Laplacian regularizer and propose a new discrete patch distance measure to quantify the similarity between two same-sized surface patches for graph construction that is robust to noise.

Denoising graph construction +2

Zoom and Learn: Generalizing Deep Stereo Matching to Novel Domains

1 code implementation CVPR 2018 Jiahao Pang, Wenxiu Sun, Chengxi Yang, Jimmy Ren, Ruichao Xiao, Jin Zeng, Liang Lin

By feeding real stereo pairs of different domains to stereo models pre-trained with synthetic data, we see that: i) a pre-trained model does not generalize well to the new domain, producing artifacts at boundaries and ill-posed regions; however, ii) feeding an up-sampled stereo pair leads to a disparity map with extra details.

Stereo Matching Stereo Matching Hand

Single View Stereo Matching

1 code implementation CVPR 2018 Yue Luo, Jimmy Ren, Mude Lin, Jiahao Pang, Wenxiu Sun, Hongsheng Li, Liang Lin

The resulting model outperforms all the previous monocular depth estimation methods as well as the stereo block matching method in the challenging KITTI dataset by only using a small number of real training data.

Monocular Depth Estimation Stereo Matching +1

LSTM Pose Machines

1 code implementation CVPR 2018 Yue Luo, Jimmy Ren, Zhouxia Wang, Wenxiu Sun, Jinshan Pan, Jianbo Liu, Jiahao Pang, Liang Lin

Such suboptimal results are mainly attributed to the inability of imposing sequential geometric consistency, handling severe image quality degradation (e. g. motion blur and occlusion) as well as the inability of capturing the temporal correlation among video frames.

2D Human Pose Estimation Pose Estimation

Cascade Residual Learning: A Two-stage Convolutional Neural Network for Stereo Matching

1 code implementation30 Aug 2017 Jiahao Pang, Wenxiu Sun, Jimmy SJ. Ren, Chengxi Yang, Qiong Yan

As opposed to directly learning the disparity at the second stage, we show that residual learning provides more effective refinement.

Stereo Matching Stereo Matching Hand

Robust Tracking Using Region Proposal Networks

no code implementations30 May 2017 Jimmy Ren, ZHIYANG YU, Jianbo Liu, Rui Zhang, Wenxiu Sun, Jiahao Pang, Xiaohao Chen, Qiong Yan

Recent advances in visual tracking showed that deep Convolutional Neural Networks (CNN) trained for image classification can be strong feature extractors for discriminative trackers.

Classification Feature Engineering +4

Graph Laplacian Regularization for Image Denoising: Analysis in the Continuous Domain

no code implementations27 Apr 2016 Jiahao Pang, Gene Cheung

Focusing on image denoising, we derive an optimal metric space assuming non-local self-similarity of pixel patches, leading to an optimal graph Laplacian regularizer for denoising in the discrete domain.

Image Denoising

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