Search Results for author: Zhanyi Hu

Found 22 papers, 4 papers with code

SLPerf: a Unified Framework for Benchmarking Split Learning

1 code implementation4 Apr 2023 Tianchen Zhou, Zhanyi Hu, Bingzhe Wu, Cen Chen

Data privacy concerns has made centralized training of data, which is scattered across silos, infeasible, leading to the need for collaborative learning frameworks.

Benchmarking Federated Learning

An Iterative Co-Training Transductive Framework for Zero Shot Learning

no code implementations30 Mar 2022 Bo Liu, Lihua Hu, Qiulei Dong, Zhanyi Hu

How to generate pseudo labels for unseen-class samples and how to use such usually noisy pseudo labels are two critical issues in transductive learning.

Transductive Learning Zero-Shot Learning

Semantic-diversity transfer network for generalized zero-shot learning via inner disagreement based OOD detector

no code implementations17 Mar 2022 Bo Liu, Qiulei Dong, Zhanyi Hu

Firstly, we propose a Semantic-diversity transfer Network (SetNet) addressing the first two limitations, where 1) a multiple-attention architecture and a diversity regularizer are proposed to learn multiple local visual features that are more consistent with semantic attributes and 2) a projector ensemble that geometrically takes diverse local features as inputs is proposed to model visual-semantic relations from diverse local perspectives.

Generalized Zero-Shot Learning Transfer Learning

Pursuing 3D Scene Structures with Optical Satellite Images from Affine Reconstruction to Euclidean Reconstruction

no code implementations16 Jan 2022 Pinhe Wang, Limin Shi, Bao Chen, Zhanyi Hu, Qiulei Dong, Jianzhong Qiao

How to use multiple optical satellite images to recover the 3D scene structure is a challenging and important problem in the remote sensing field.

HardBoost: Boosting Zero-Shot Learning with Hard Classes

no code implementations14 Jan 2022 Bo Liu, Lihua Hu, Zhanyi Hu, Qiulei Dong

This work is a systematical analysis on the so-called hard class problem in zero-shot learning (ZSL), that is, some unseen classes disproportionally affect the ZSL performances than others, as well as how to remedy the problem by detecting and exploiting hard classes.

Zero-Shot Learning

Superpoint-guided Semi-supervised Semantic Segmentation of 3D Point Clouds

no code implementations8 Jul 2021 Shuang Deng, Qiulei Dong, Bo Liu, Zhanyi Hu

The proposed network is iteratively updated with its predicted pseudo labels, where a superpoint generation module is introduced for extracting superpoints from 3D point clouds, and a pseudo-label optimization module is explored for automatically assigning pseudo labels to the unlabeled points under the constraint of the extracted superpoints.

Point Cloud Segmentation Pseudo Label +2

Rotation Transformation Network: Learning View-Invariant Point Cloud for Classification and Segmentation

1 code implementation7 Jul 2021 Shuang Deng, Bo Liu, Qiulei Dong, Zhanyi Hu

Many recent works show that a spatial manipulation module could boost the performances of deep neural networks (DNNs) for 3D point cloud analysis.

3D Point Cloud Classification Point Cloud Classification

Language-Level Semantics Conditioned 3D Point Cloud Segmentation

no code implementations1 Jul 2021 Bo Liu, Shuang Deng, Qiulei Dong, Zhanyi Hu

In this work, a language-level Semantics Conditioned framework for 3D Point cloud segmentation, called SeCondPoint, is proposed, where language-level semantics are introduced to condition the modeling of point feature distribution as well as the pseudo-feature generation, and a feature-geometry-based mixup approach is further proposed to facilitate the distribution learning.

Point Cloud Segmentation Segmentation +2

Hardness Sampling for Self-Training Based Transductive Zero-Shot Learning

1 code implementation CVPR 2021 Liu Bo, Qiulei Dong, Zhanyi Hu

Addressing this problem, we first empirically analyze the roles of unseen-class samples with different degrees of hardness in the training process based on the uneven prediction phenomenon found in many ZSL methods, resulting in three observations.

Zero-Shot Learning

Optimization-Based Visual-Inertial SLAM Tightly Coupled with Raw GNSS Measurements

1 code implementation22 Oct 2020 Jinxu Liu, Wei Gao, Zhanyi Hu

Unlike loose coupling approaches and the EKF-based approaches in the literature, we propose an optimization-based visual-inertial SLAM tightly coupled with raw Global Navigation Satellite System (GNSS) measurements, a first attempt of this kind in the literature to our knowledge.

Robotics

Zero-Shot Learning from Adversarial Feature Residual to Compact Visual Feature

no code implementations29 Aug 2020 Bo Liu, Qiulei Dong, Zhanyi Hu

In addition, considering that the visual features from categorization CNNs are generally inconsistent with their semantic features, a simple feature selection strategy is introduced for extracting more compact semantic visual features.

feature selection Object Recognition +1

Bidirectional Trajectory Computation for Odometer-Aided Visual-Inertial SLAM

no code implementations1 Feb 2020 Jinxu Liu, Wei Gao, Zhanyi Hu

the extrinsic parameters before the first turning, which is a complement of the existing results of observability analyses.

Robotics

Face representation by deep learning: a linear encoding in a parameter space?

no code implementations22 Oct 2019 Qiulei Dong, Jiayin Sun, Zhanyi Hu

In this work, we investigate this problem by formulating face images as points in a shape-appearance parameter space, and our results demonstrate that: (i) The encoding and decoding of the neuron responses (representations) to face images in CNNs could be achieved under a linear model in the parameter space, in agreement with the recent discovery in primate IT face neurons, but different from the aforementioned perspective on CNNs' face representation with complex image feature encoding; (ii) The linear model for face encoding and decoding in the parameter space could achieve close or even better performances on face recognition and verification than state-of-the-art CNNs, which might provide new lights on the design strategies for face recognition systems; (iii) The neuron responses to face images in CNNs could not be adequately modelled by the axis model, a model recently proposed on face modelling in primate IT cortex.

Face Recognition

Non-uniqueness phenomenon of object representation in modelling IT cortex by deep convolutional neural network (DCNN)

no code implementations6 Jun 2019 Qiulei Dong, Bo Liu, Zhanyi Hu

Recently DCNN (Deep Convolutional Neural Network) has been advocated as a general and promising modelling approach for neural object representation in primate inferotemporal cortex.

Object

Complete Scene Reconstruction by Merging Images and Laser Scans

no code implementations21 Apr 2019 Xiang Gao, Shuhan Shen, Lingjie Zhu, Tianxin Shi, Zhiheng Wang, Zhanyi Hu

Experimental evaluations on two ancient Chinese architecture datasets demonstrate the effectiveness of our proposed complete scene reconstruction pipeline.

Large Scale Urban Scene Modeling from MVS Meshes

no code implementations ECCV 2018 Lingjie Zhu, Shuhan Shen, Xiang Gao, Zhanyi Hu

There are two major steps in our framework: segmentation and building modeling.

Learning Depth from Single Images with Deep Neural Network Embedding Focal Length

no code implementations27 Mar 2018 Lei He, Guanghui Wang, Zhanyi Hu

In order to learn monocular depth by embedding the focal length, we propose a method to generate synthetic varying-focal-length dataset from fixed-focal-length datasets, and a simple and effective method is implemented to fill the holes in the newly generated images.

Depth Estimation Network Embedding +1

CSfM: Community-based Structure from Motion

no code implementations23 Mar 2018 Hainan Cui, Shuhan Shen, Xiang Gao, Zhanyi Hu

The global manner has the advantage of simultaneously estimating all camera poses, but it is usually sensitive to epipolar geometry outliers.

Computational Efficiency

HSfM: Hybrid Structure-from-Motion

no code implementations CVPR 2017 Hainan Cui, Xiang Gao, Shuhan Shen, Zhanyi Hu

In this work, we propose a new hybrid SfM method to tackle the issues of efficiency, accuracy and robustness in a unified framework.

Computational Efficiency

Statistics of Visual Responses to Object Stimuli from Primate AIT Neurons to DNN Neurons

no code implementations12 Dec 2016 Qiulei Dong, Zhanyi Hu

Lehky et al. (Lehky, 2011) provided a statistical analysis on neural responses to object stimuli in primate AIT cortex.

Object Object Recognition

Modern Physiognomy: An Investigation on Predicting Personality Traits and Intelligence from the Human Face

no code implementations26 Apr 2016 Rizhen Qin, Wei Gao, Huarong Xu, Zhanyi Hu

The classification results show that the personality traits "Rule-consciousness" and "Vigilance" can be predicted reliably, and that the traits of females can be predicted more accurately than those of male.

General Classification regression

Dynamic Parallel and Distributed Graph Cuts

no code implementations1 Dec 2015 Miao Yu, Shuhan Shen, Zhanyi Hu

Through both the splitting and merging, we further propose a dynamic parallel and distributed graph-cuts algorithm with guaranteed convergence to the globally optimal solutions within a predefined number of iterations.

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