Search Results for author: Lian Xu

Found 8 papers, 3 papers with code

Auxiliary Tasks Enhanced Dual-affinity Learning for Weakly Supervised Semantic Segmentation

no code implementations2 Mar 2024 Lian Xu, Mohammed Bennamoun, Farid Boussaid, Wanli Ouyang, Ferdous Sohel, Dan Xu

We propose AuxSegNet+, a weakly supervised auxiliary learning framework to explore the rich information from these saliency maps and the significant inter-task correlation between saliency detection and semantic segmentation.

Auxiliary Learning Multi-Label Image Classification +5

MCTformer+: Multi-Class Token Transformer for Weakly Supervised Semantic Segmentation

1 code implementation6 Aug 2023 Lian Xu, Mohammed Bennamoun, Farid Boussaid, Hamid Laga, Wanli Ouyang, Dan Xu

Building upon the observation that the attended regions of the one-class token in the standard vision transformer can contribute to a class-agnostic localization map, we explore the potential of the transformer model to capture class-specific attention for class-discriminative object localization by learning multiple class tokens.

Object Localization Weakly supervised Semantic Segmentation +1

Learning Multi-Modal Class-Specific Tokens for Weakly Supervised Dense Object Localization

no code implementations CVPR 2023 Lian Xu, Wanli Ouyang, Mohammed Bennamoun, Farid Boussaid, Dan Xu

Weakly supervised dense object localization (WSDOL) relies generally on Class Activation Mapping (CAM), which exploits the correlation between the class weights of the image classifier and the pixel-level features.

Object Localization Representation Learning +2

VAPCNet: Viewpoint-Aware 3D Point Cloud Completion

no code implementations ICCV 2023 Zhiheng Fu, Longguang Wang, Lian Xu, Zhiyong Wang, Hamid Laga, Yulan Guo, Farid Boussaid, Mohammed Bennamoun

In this paper, we thus propose an unsupervised viewpoint representation learning scheme for 3D point cloud completion without explicit viewpoint estimation.

Point Cloud Completion Representation Learning +1

Active-Passive SimStereo -- Benchmarking the Cross-Generalization Capabilities of Deep Learning-based Stereo Methods

no code implementations17 Sep 2022 Laurent Jospin, Allen Antony, Lian Xu, Hamid Laga, Farid Boussaid, Mohammed Bennamoun

In this paper, we propose the Active-Passive SimStereo dataset and a corresponding benchmark to evaluate the performance gap between passive and active stereo images for stereo matching algorithms.

Benchmarking Stereo Matching

A Guide to Image and Video based Small Object Detection using Deep Learning : Case Study of Maritime Surveillance

no code implementations26 Jul 2022 Aref Miri Rekavandi, Lian Xu, Farid Boussaid, Abd-Krim Seghouane, Stephen Hoefs, Mohammed Bennamoun

Small object detection (SOD) in optical images and videos is a challenging problem that even state-of-the-art generic object detection methods fail to accurately localize and identify such objects.

Decision Making Object +2

Multi-class Token Transformer for Weakly Supervised Semantic Segmentation

1 code implementation CVPR 2022 Lian Xu, Wanli Ouyang, Mohammed Bennamoun, Farid Boussaid, Dan Xu

To this end, we propose a Multi-class Token Transformer, termed as MCTformer, which uses multiple class tokens to learn interactions between the class tokens and the patch tokens.

Object Object Localization +2

Leveraging Auxiliary Tasks with Affinity Learning for Weakly Supervised Semantic Segmentation

1 code implementation ICCV 2021 Lian Xu, Wanli Ouyang, Mohammed Bennamoun, Farid Boussaid, Ferdous Sohel, Dan Xu

Motivated by the significant inter-task correlation, we propose a novel weakly supervised multi-task framework termed as AuxSegNet, to leverage saliency detection and multi-label image classification as auxiliary tasks to improve the primary task of semantic segmentation using only image-level ground-truth labels.

Auxiliary Learning Multi-Label Image Classification +6

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