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Rongtao Xu

22 accepted papers

2026

ActiveVLN: Towards Active Exploration Via Multi-Turn RL in Vision-And-Language Navigation

ICRA 2026poster

The Vision-and-Language Navigation (VLN) task requires an agent to follow natural language instructions and navigate through complex environments. Existing MLLM-based VLN methods primarily rely on imitation learning (IL) and often use DAgger for post-training to mitigate covariate shift. While effec…

2026

DialogueVPR: Towards Conversational Visual Place Recognition

CVPR 2026

Inspired by how humans communicate spatial information, language-guided geo-localization has gained significant traction for its intuitive and practical value. Despite this progress, most methods still rely on a static, one-shot retrieval paradigm, which fails to handle the ambiguity and incompleten

Cited by 0SourcecodeScholar
2026

Explicit Temporal-Semantic Modeling for Dense Video Captioning via Context-Aware Cross-Modal Interaction

AAAI 2026technical

Dense video captioning jointly localizes and captions salient events in untrimmed videos. Recent methods primarily focus on leveraging additional prior knowledge and advanced multi-task architectures to achieve competitive performance. However, these pipelines rely on implicit modeling that uses fra

Cited by 0SourcePDFScholar
2026

LaplacianFormer:Rethinking Linear Attention with Laplacian Kernel

ICLR 2026poster

The quadratic complexity of softmax attention presents a major obstacle for scaling Transformers to high-resolution vision tasks. Existing linear attention variants often replace the softmax with Gaussian kernels to reduce complexity, but such approximations lack theoretical grounding and tend to ov…

Cited by 0SourceScholar
2026

MoFu: Scale-Aware Modulation and Fourier Fusion for Multi-Subject Video Generation

AAAI 2026technical

Multi-subject video generation aims to synthesize videos from textual prompts and multiple reference images, ensuring that each subject preserves natural scale and visual fidelity. However, current methods face two challenges: scale inconsistency, where variations in subject size lead to unnatural g

Cited by 0SourcePDFScholar
2026

SAGE: Spatial-visual Adaptive Graph Exploration for Efficient Visual Place Recognition

ICLR 2026poster

Visual Place Recognition (VPR) requires robust retrieval of geotagged images despite large appearance, viewpoint, and environmental variation. Prior methods focus on descriptor fine-tuning or fixed sampling strategies yet neglect the dynamic interplay between spatial context and visual similarity d…

Cited by 0SourcecodeScholar
2026

SurveilNav: Collaborative Object Goal Navigation with Robot and Surveillance System

ICRA 2026poster

With the growing deployment of surveillance systems in factories, offices, and homes, integrating them with robots offers a promising direction for collaborative and efficient task execution. However, existing approaches largely focus on single-robot scenarios and struggle with multi-view collaborat…

2025

3D-MoRe: Unified Modal-Contextual Reasoning for Embodied Question Answering

IROS 2025

With the growing need for diverse and scalable data in indoor scene tasks, such as question answering and dense captioning, we propose 3D-MoRe, a novel paradigm designed to generate large-scale 3D-language datasets by lever-aging the strengths of foundational models. The framework integrates key com

Cited by 12SourcecodeScholar
2025

Complementary Information Guided Occupancy Prediction via Multi-Level Representation Fusion

ICRA 2025

Camera-based occupancy prediction is a main-stream approach for 3D perception in autonomous driving, aiming to infer complete 3D scene geometry and semantics from 2D images. Almost existing methods focus on improving performance through structural modifications, such as lightweight backbones and com

Cited by 1SourceScholar
2025

Focus on Local: Finding Reliable Discriminative Regions for Visual Place Recognition

AAAI 2025technical

Visual Place Recognition (VPR) is aimed at predicting the location of a query image by referencing a database of geotagged images. For VPR task, often fewer discriminative local regions in an image produce important effects while mundane background regions do not contribute or even cause perceptual…

2025

MindTuner: Cross-Subject Visual Decoding with Visual Fingerprint and Semantic Correction

AAAI 2025technical

Decoding natural visual scenes from brain activity has flourished, with extensive research in single-subject tasks and, however, less in cross-subject tasks. Reconstructing high-quality images in cross-subject tasks is a challenging problem due to profound individual differences between subjects and…

Cited by 8SourcePDFScholar
2025

PanoDiT: Panoramic Videos Generation with Diffusion Transformer

AAAI 2025technical

As immersive experiences become increasingly popular, panoramic video has garnered significant attention in both research and applications. The high cost associated with capturing panoramic video underscores the need for efficient prompt-based generation methods. Although recent text-to-video (T2V)…

Cited by 0SourcePDFScholar
2025

PhyBlock: A Progressive Benchmark for Physical Understanding and Planning via 3D Block Assembly

NeurIPS 2025poster

While vision-language models (VLMs) have demonstrated promising capabilities in reasoning and planning for embodied agents, their ability to comprehend physical phenomena, particularly within structured 3D environments, remains severely limited. To close this gap, we introduce PhyBlock, a progressiv…

Cited by 0SourceScholar
2025

Structured Preference Optimization for Vision-Language Long-Horizon Task Planning

EMNLP 2025

Existing vision-language planning methods perform well on short-horizon tasks but struggle with long-horizon reasoning in dynamic environments due to the difficulty of training models to generate high-quality reasoning processes. To address this, we propose Structured Preference Optimization (SPO),

Cited by 0SourcePDFScholar
2024

DefFusion: Deformable Multimodal Representation Fusion for 3D Semantic Segmentation

ICRA 2024poster

The complementarity between camera and LiDAR data makes fusion methods a promising approach to improve 3D semantic segmentation performance. Recent transformer-based methods have also demonstrated superiority in segmentation. However, multimodal solutions incorporating transformers are underexplored…

Cited by 8SourceScholar
2024

NaVid: Video-based VLM Plans the Next Step for Vision-and-Language Navigation

RSS 2024poster

Vision-and-language navigation (VLN) stands as a key research problem of Embodied AI, aiming at enabling agents to navigate in unseen environments following linguistic instructions. In this field, generalization is a long-standing challenge, either to out-of-distribution scenes or from Sim to Real.…

Cited by 80SourcePDFScholar
2024

NeuroClips: Towards High-fidelity and Smooth fMRI-to-Video Reconstruction

NeurIPS 2024oral

Reconstruction of static visual stimuli from non-invasion brain activity fMRI achieves great success, owning to advanced deep learning models such as CLIP and Stable Diffusion. However, the research on fMRI-to-video reconstruction remains limited since decoding the spatiotemporal perception of conti…

2024

Spectral Prompt Tuning: Unveiling Unseen Classes for Zero-Shot Semantic Segmentation

AAAI 2024technical

Recently, CLIP has found practical utility in the domain of pixel-level zero-shot segmentation tasks. The present landscape features two-stage methodologies beset by issues such as intricate pipelines and elevated computational costs. While current one-stage approaches alleviate these concerns and…

2023

Self Correspondence Distillation for End-to-End Weakly-Supervised Semantic Segmentation

AAAI 2023technical

Efficiently training accurate deep models for weakly supervised semantic segmentation (WSSS) with image-level labels is challenging and important. Recently, end-to-end WSSS methods have become the focus of research due to their high training efficiency. However, current methods suffer from insuffici…

2023

Treating Pseudo-labels Generation as Image Matting for Weakly Supervised Semantic Segmentation

ICCV 2023poster

Generating accurate pseudo-labels under the supervision of image categories is a crucial step in Weakly Supervised Semantic Segmentation (WSSS). In this work, we propose a Mat-Label pipeline that provides a fresh way to treat WSSS pseudo-labels generation as an image matting task. By taking a trimap…

Cited by 29PDFcodeScholar
2022

DOMAINDESC: Learning Local Descriptors With Domain Adaptation

ICASSP 2022accepted

Robust and efficient local descriptor is crucial in a wide range of applications. In this paper, we propose a novel descriptor DomainDesc which is invariant as much as possible by learning local Descriptor with Domain adaptation. We design the feature-level domain adaptation loss to improve robustne…

Cited by 0SourceScholar
2022

MTLDesc: Looking Wider to Describe Better

AAAI 2022technical

Limited by the locality of convolutional neural networks, most existing local features description methods only learn local descriptors with local information and lack awareness of global and surrounding spatial context. In this work, we focus on making local descriptors ``look wider to describe bet…