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Visual Place Recognition (VPR) estimates the location of query images by matching them with images in a reference database. Conventional methods generally adopt aggregated CNN features for global retrieval and RANSAC-based geometric…

Computer Vision and Pattern Recognition · Computer Science 2023-04-10 Sijie Zhu , Linjie Yang , Chen Chen , Mubarak Shah , Xiaohui Shen , Heng Wang

Data scarcity is a long-standing challenge in the Vision-Language Navigation (VLN) field, which extremely hinders the generalization of agents to unseen environments. Previous works primarily rely on additional simulator data or…

Computer Vision and Pattern Recognition · Computer Science 2025-11-05 Ziming Wei , Bingqian Lin , Yunshuang Nie , Jiaqi Chen , Shikui Ma , Hang Xu , Xiaodan Liang

Recent advances in prompt optimization, exemplified by methods such as TextGrad, enable automatic, gradient-like refinement of textual prompts to enhance the performance of large language models (LLMs) on specific downstream tasks. However,…

Artificial Intelligence · Computer Science 2025-08-27 Chunlong Wu , Zhibo Qu

In recent years, learning-based underwater image enhancement (UIE) techniques have rapidly evolved. However, distribution shifts between high-quality enhanced outputs and natural images can hinder semantic cue extraction for downstream…

Computer Vision and Pattern Recognition · Computer Science 2026-03-16 Guodong Fan , Shengning Zhou , Genji Yuan , Huiyu Li , Jingchun Zhou , Jinjiang Li

We present a method to jointly refine the geometry and semantic segmentation of 3D surface meshes. Our method alternates between updating the shape and the semantic labels. In the geometry refinement step, the mesh is deformed with…

Computer Vision and Pattern Recognition · Computer Science 2017-06-27 Maros Blaha , Mathias Rothermel , Martin R. Oswald , Torsten Sattler , Audrey Richard , Jan D. Wegner , Marc Pollefeys , Konrad Schindler

Vision-and-Language Navigation (VLN) requires agents to autonomously navigate complex environments via visual images and natural language instructions--remains highly challenging. Recent research on enhancing language-guided navigation…

Artificial Intelligence · Computer Science 2026-02-10 Changxin Huang , Lv Tang , Zhaohuan Zhan , Lisha Yu , Runhao Zeng , Zun Liu , Zhengjie Wang , Jianqiang Li

Unified Multimodal Models (UMMs) exhibit strong understanding, yet this capability often fails to effectively guide generation. We identify this as a Cognitive Gap: the model lacks the understanding of how to enhance its own generation…

Artificial Intelligence · Computer Science 2026-01-29 Zhenchen Tang , Songlin Yang , Zichuan Wang , Bo Peng , Yang Li , Beibei Dong , Jing Dong

Multimodal Retrieval-Augmented Generation (MRAG) enables Multimodal Large Language Models (MLLMs) to generate responses with external multimodal evidence, and numerous video-based MRAG benchmarks have been proposed to evaluate model…

Computation and Language · Computer Science 2025-10-13 Kaiwen Wei , Xiao Liu , Jie Zhang , Zijian Wang , Ruida Liu , Yuming Yang , Xin Xiao , Xiao Sun , Haoyang Zeng , Changzai Pan , Yidan Zhang , Jiang Zhong , Peijin Wang , Yingchao Feng

Unified multimodal large language models such as Show-o and Janus have achieved strong performance across both generation and understanding tasks. However, these models typically rely on large-scale datasets and require substantial…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Weijia Mao , Zhenheng Yang , Mike Zheng Shou

Image enhancement is a technique that frequently utilized in digital image processing. In recent years, the popularity of learning-based techniques for enhancing the aesthetic performance of photographs has increased. However, the majority…

Computer Vision and Pattern Recognition · Computer Science 2022-12-20 Zinuo Li , Xuhang Chen , Chi-Man Pun , Shuqiang Wang

Massive-scale pretraining has made vision-language models increasingly popular for image-to-image and text-to-image retrieval across a broad collection of domains. However, these models do not perform well when used for challenging…

Computer Vision and Pattern Recognition · Computer Science 2025-05-29 Eric Xing , Abby Stylianou , Robert Pless , Nathan Jacobs

Existing unified methods typically treat multi-degradation image restoration as a multi-task learning problem. Despite performing effectively compared to single degradation restoration methods, they overlook the utilization of commonalities…

Computer Vision and Pattern Recognition · Computer Science 2024-10-01 Cheng Zhang , Dong Gong , Jiumei He , Yu Zhu , Jinqiu Sun , Yanning Zhang

Existing low-light image enhancement (LLIE) and joint LLIE and deblurring (LLIE-deblur) models have made strides in addressing predefined degradations, yet they are often constrained by dynamically coupled degradations. To address these…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Rui Xu , Yuzhen Niu , Yuezhou Li , Huangbiao Xu , Wenxi Liu , Yuzhong Chen

Multimodal Large Language Models (MLLMs) with unified architectures excel across a wide range of vision-language tasks, yet aligning them with personalized image generation remains a significant challenge. Existing methods for MLLMs are…

Computer Vision and Pattern Recognition · Computer Science 2025-08-27 Qian Liang , Yujia Wu , Kuncheng Li , Jiwei Wei , Shiyuan He , Jinyu Guo , Ning Xie

Unified Multimodal models (UMMs) built on a single architecture have shown impressive performance in both understanding and generation. We identify a fundamental challenge that lies in inductive biases induced by distinct supervision…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Renjie Lu , Xulong Zhang , Xiaoyang Qu , Shangfei Wang , Jianzong Wang

Vision-to-code tasks require models to reconstruct structured visual inputs, such as charts, tables, and SVGs, into executable or structured representations with high visual fidelity. While recent Large Vision Language Models (LVLMs)…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Ziyu Liu , Shengyuan Ding , Xinyu Fang , Xuanlang Dai , Penghui Yang , Jianze Liang , Jiaqi Wang , Kai Chen , Dahua Lin , Yuhang Zang

Despite the remarkable capabilities of text-to-image (T2I) generation models, real-world applications often demand fine-grained, iterative image editing that existing methods struggle to provide. Key challenges include granular instruction…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Zihan Liang , Jiahao Sun , Haoran Ma

Image restoration aims to reconstruct the latent clear images from their degraded versions. Despite the notable achievement, existing methods predominantly focus on handling specific degradation types and thus require specialized models,…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Xuanhua He , Lang Li , Yingying Wang , Hui Zheng , Ke Cao , Keyu Yan , Rui Li , Chengjun Xie , Jie Zhang , Man Zhou

Multi-reference image generation aims to synthesize images from textual instructions while faithfully preserving subject identities from multiple reference images. Existing VLM-enhanced diffusion models commonly rely on decoupled visual…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Yiyan Xu , Qiulin Wang , Wenjie Wang , Yunyao Mao , Xintao Wang , Pengfei Wan , Kun Gai , Fuli Feng

Removing multiple degradations, such as haze, rain, and blur, from real-world images poses a challenging and illposed problem. Recently, unified models that can handle different degradations have been proposed and yield promising results.…

Computer Vision and Pattern Recognition · Computer Science 2023-07-12 Yongheng Zhang , Danfeng Yan , Yuanqiang Cai