Search Results for author: Wenjia Xu

Found 18 papers, 6 papers with code

Deep Semantic-Visual Alignment for Zero-Shot Remote Sensing Image Scene Classification

1 code implementation3 Feb 2024 Wenjia Xu, Jiuniu Wang, Zhiwei Wei, Mugen Peng, Yirong Wu

Besides, pioneer ZSL models use convolutional neural networks pre-trained on ImageNet, which focus on the main objects appearing in each image, neglecting the background context that also matters in RS scene classification.

Attribute Image Classification +4

Jointly Optimized Global-Local Visual Localization of UAVs

no code implementations12 Oct 2023 Haoling Li, Jiuniu Wang, Zhiwei Wei, Wenjia Xu

Our GLVL network is a two-stage visual localization approach, combining a large-scale retrieval module that finds similar regions with the UAV flight scene, and a fine-grained matching module that localizes the precise UAV coordinate, enabling real-time and precise localization.

Retrieval Simultaneous Localization and Mapping +2

ARAI-MVSNet: A multi-view stereo depth estimation network with adaptive depth range and depth interval

no code implementations17 Aug 2023 Song Zhang, Wenjia Xu, Zhiwei Wei, Lili Zhang, Yang Wang, Junyi Liu

Moreover, our method also achieves the lowest $e_{1}$ and $e_{3}$ on the BlendedMVS dataset and the highest Acc and $F_{1}$-score on the ETH 3D dataset, surpassing all listed methods. Project website: https://github. com/zs670980918/ARAI-MVSNet

Stereo Depth Estimation

Inferring High-level Geographical Concepts via Knowledge Graph and Multi-scale Data Integration: A Case Study of C-shaped Building Pattern Recognition

no code implementations19 Apr 2023 Zhiwei Wei, Yi Xiao, Wenjia Xu, Mi Shu, Lu Cheng, Yang Wang, Chunbo Liu

To improve efficiency and effectiveness, we integrate multi-scale data using a knowledge graph, focusing on the recognition of C-shaped building patterns.

Data Integration

Distinctive Image Captioning via CLIP Guided Group Optimization

no code implementations8 Aug 2022 Youyuan Zhang, Jiuniu Wang, Hao Wu, Wenjia Xu

Image captioning models are usually trained according to human annotated ground-truth captions, which could generate accurate but generic captions.

Image Captioning

Learning Prototype via Placeholder for Zero-shot Recognition

1 code implementation29 Jul 2022 Zaiquan Yang, Yang Liu, Wenjia Xu, Chong Huang, Lei Zhou, Chao Tong

Specifically, we combine seen classes to hallucinate new classes which play as placeholders of the unseen classes in the visual and semantic space.

Zero-Shot Learning

Multi-dimension Geospatial feature learning for urban region function recognition

no code implementations18 Jul 2022 Wenjia Xu, Jiuniu Wang, Yirong Wu

In this paper, we propose a Multi-dimension Feature Learning Model~(MDFL) using high-dimensional GBD data in conjunction with RS images for urban region function recognition.

On Distinctive Image Captioning via Comparing and Reweighting

no code implementations8 Apr 2022 Jiuniu Wang, Wenjia Xu, Qingzhong Wang, Antoni B. Chan

First, we propose a distinctiveness metric -- between-set CIDEr (CIDErBtw) to evaluate the distinctiveness of a caption with respect to those of similar images.

Image Captioning Retrieval +1

Attribute Prototype Network for Any-Shot Learning

no code implementations4 Apr 2022 Wenjia Xu, Yongqin Xian, Jiuniu Wang, Bernt Schiele, Zeynep Akata

While a visual-semantic embedding layer learns global features, local features are learned through an attribute prototype network that simultaneously regresses and decorrelates attributes from intermediate features.

Attribute Few-Shot Image Classification +2

VGSE: Visually-Grounded Semantic Embeddings for Zero-Shot Learning

1 code implementation CVPR 2022 Wenjia Xu, Yongqin Xian, Jiuniu Wang, Bernt Schiele, Zeynep Akata

Our model visually divides a set of images from seen classes into clusters of local image regions according to their visual similarity, and further imposes their class discrimination and semantic relatedness.

Transfer Learning Word Embeddings +1

Human Attention in Fine-grained Classification

1 code implementation2 Nov 2021 Yao Rong, Wenjia Xu, Zeynep Akata, Enkelejda Kasneci

The way humans attend to, process and classify a given image has the potential to vastly benefit the performance of deep learning models.

Classification Decision Making +1

Group-based Distinctive Image Captioning with Memory Attention

no code implementations20 Aug 2021 Jiuniu Wang, Wenjia Xu, Qingzhong Wang, Antoni B. Chan

In particular, we propose a group-based memory attention (GMA) module, which stores object features that are unique among the image group (i. e., with low similarity to objects in other images).

Contrastive Learning Image Captioning +1

High Quality Remote Sensing Image Super-Resolution Using Deep Memory Connected Network

no code implementations1 Oct 2020 Wenjia Xu, Guangluan Xu, Yang Wang, Xian Sun, Daoyu Lin, Yirong Wu

Single image super-resolution is an effective way to enhance the spatial resolution of remote sensing image, which is crucial for many applications such as target detection and image classification.

Image Classification Image Super-Resolution

Where is the Model Looking At?--Concentrate and Explain the Network Attention

no code implementations29 Sep 2020 Wenjia Xu, Jiuniu Wang, Yang Wang, Guangluan Xu, Wei Dai, Yirong Wu

We generate attribute-based textual explanations for the network and ground the attributes on the image to show visual explanations.

Attribute Image Classification +1

ASTRAL: Adversarial Trained LSTM-CNN for Named Entity Recognition

1 code implementation2 Sep 2020 Jiuniu Wang, Wenjia Xu, Xingyu Fu, Guangluan Xu, Yirong Wu

Under such circumstances, how to make full use of the information extracted by word embedding requires more in-depth research.

named-entity-recognition Named Entity Recognition +1

SRQA: Synthetic Reader for Factoid Question Answering

1 code implementation2 Sep 2020 Jiuniu Wang, Wenjia Xu, Xingyu Fu, Yang Wei, Li Jin, Ziyan Chen, Guangluan Xu, Yirong Wu

This model enhances the question answering system in the multi-document scenario from three aspects: model structure, optimization goal, and training method, corresponding to Multilayer Attention (MA), Cross Evidence (CE), and Adversarial Training (AT) respectively.

Question Answering

Attribute Prototype Network for Zero-Shot Learning

no code implementations NeurIPS 2020 Wenjia Xu, Yongqin Xian, Jiuniu Wang, Bernt Schiele, Zeynep Akata

As an additional benefit, our model points to the visual evidence of the attributes in an image, e. g. for the CUB dataset, confirming the improved attribute localization ability of our image representation.

Attribute Representation Learning +1

Compare and Reweight: Distinctive Image Captioning Using Similar Images Sets

no code implementations ECCV 2020 Jiuniu Wang, Wenjia Xu, Qingzhong Wang, Antoni B. Chan

A wide range of image captioning models has been developed, achieving significant improvement based on popular metrics, such as BLEU, CIDEr, and SPICE.

Image Captioning Retrieval

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