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While Multimodal Large Language Models (MLLMs) have achieved impressive progress in vision-language understanding, they still struggle with complex multi-step reasoning, often producing logically inconsistent or partially correct solutions.…

Artificial Intelligence · Computer Science 2025-06-06 Lingxiao Du , Fanqing Meng , Zongkai Liu , Zhixiang Zhou , Ping Luo , Qiaosheng Zhang , Wenqi Shao

Visual Place Recognition (VPR) has evolved from handcrafted descriptors to deep learning approaches, yet significant challenges remain. Current approaches, including Vision Foundation Models (VFMs) and Multimodal Large Language Models…

Machine Learning · Computer Science 2025-09-03 Jintao Cheng , Weibin Li , Jiehao Luo , Xiaoyu Tang , Zhijian He , Jin Wu , Yao Zou , Wei Zhang

Vision-Language Models (VLMs) have demonstrated strong capabilities in aligning visual and textual modalities, enabling a wide range of applications in multimodal understanding and generation. While they excel in zero-shot and transfer…

Computer Vision and Pattern Recognition · Computer Science 2025-09-25 Hao Dong , Moru Liu , Jian Liang , Eleni Chatzi , Olga Fink

Vision-language reward modeling faces a dilemma: generative approaches are interpretable but slow, while discriminative ones are efficient but act as opaque "black boxes." To bridge this gap, we propose VL-MDR (Vision-Language…

Computation and Language · Computer Science 2026-04-08 Qiyuan Chen , Hongsen Huang , Jiahe Chen , Qian Shao , Jintai Chen , Hongxia Xu , Renjie Hua , Chuan Ren , Jian Wu

Video Large Language Models (VLLMs) incur substantial prefilling cost due to the large number of visual tokens. While attention-based token pruning offers a promising acceleration strategy, applying it at shallow decoder layers often causes…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Yingjie Xia , Tao Liu , Jinglei Shi , Qingsong Xie , Heng Guo , Jian Yang , Xi Wang

Vision-language models (VLMs) are increasingly attractive for multimodal quality assessment, but their default reliance on autoregressive text generation and dynamic visual processing is poorly matched to scalar regression under strict…

Computer Vision and Pattern Recognition · Computer Science 2026-05-28 William Leach , Ru He , Sizhuo Ma , Yizhen Jia , Min Cao , Jian Wang , Rick Cao

Vision-language models (VLMs) have enabled strong zero-shot classification through image-text alignment. Yet, their purely visual inference capabilities remain under-explored. In this work, we conduct a comprehensive evaluation of both…

Computer Vision and Pattern Recognition · Computer Science 2025-09-12 Illia Volkov , Nikita Kisel , Klara Janouskova , Jiri Matas

Understanding high-resolution (HR) images remains a critical challenge for multimodal large language models (MLLMs). Recent approaches leverage vision-based retrieval-augmented generation (RAG) to retrieve query-relevant crops from HR…

Computer Vision and Pattern Recognition · Computer Science 2026-03-20 Fan Yang , Xingping Dong , Xin Yu , Wenhan Luo , Wei Liu , Kaihao Zhang

Product image segmentation is vital in e-commerce. Most existing methods extract the product image foreground only based on the visual modality, making it difficult to distinguish irrelevant products. As product titles contain abundant…

Computer Vision and Pattern Recognition · Computer Science 2023-06-27 Yun Guo , Wei Feng , Zheng Zhang , Xiancong Ren , Yaoyu Li , Jingjing Lv , Xin Zhu , Zhangang Lin , Jingping Shao

Retrieving relevant items that match users' queries from billion-scale corpus forms the core of industrial e-commerce search systems, in which embedding-based retrieval (EBR) methods are prevailing. These methods adopt a two-tower framework…

Information Retrieval · Computer Science 2023-03-21 Binbin Wang , Mingming Li , Zhixiong Zeng , Jingwei Zhuo , Songlin Wang , Sulong Xu , Bo Long , Weipeng Yan

Prompt ensembling of Large Language Model (LLM) generated category-specific prompts has emerged as an effective method to enhance zero-shot recognition ability of Vision-Language Models (VLMs). To obtain these category-specific prompts, the…

Computer Vision and Pattern Recognition · Computer Science 2024-08-08 M. Jehanzeb Mirza , Leonid Karlinsky , Wei Lin , Sivan Doveh , Jakub Micorek , Mateusz Kozinski , Hilde Kuehne , Horst Possegger

Multimodal Large Language Models (MLLMs) show strong visual perception, yet remain limited in reasoning about space under changing viewpoints. We study this challenge as Perspective-Conditioned Spatial Reasoning (PCSR) in 360-degree…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Yuangong Chen , Wai Keung Wong , Jiaxing Li , Ioannis Patras , Xu Zheng

Large language models (LLMs) have seen substantial growth, necessitating efficient model pruning techniques. Existing post-training pruning methods primarily measure weight importance in converged dense models, often overlooking changes in…

Machine Learning · Computer Science 2025-12-11 Yupeng Su , Ziyi Guan , Xiaoqun Liu , Tianlai Jin , Dongkuan Wu , Zhengfei Chen , Graziano Chesi , Ngai Wong , Hao Yu

Multimodal Retrieval-Augmented Generation (MRAG) has emerged as a key paradigm for grounding MLLMs with external knowledge. While query pre-processing (e.g., rewriting) is standard in text-based RAG, existing MRAG pipelines predominantly…

Information Retrieval · Computer Science 2026-02-16 Jiankun Zhang , Shenglai Zeng , Kai Guo , Xinnan Dai , Hui Liu , Jiliang Tang , Yi Chang

This paper presents novel benchmarks for evaluating vision-language models (VLMs) in zero-shot recognition, focusing on granularity and specificity. Although VLMs excel in tasks like image captioning, they face challenges in open-world…

Computer Vision and Pattern Recognition · Computer Science 2024-06-19 Zhenlin Xu , Yi Zhu , Tiffany Deng , Abhay Mittal , Yanbei Chen , Manchen Wang , Paolo Favaro , Joseph Tighe , Davide Modolo

Vehicle make and model recognition (VMMR) is an important task in intelligent transportation systems, but existing approaches struggle to adapt to newly released models. Contrastive Language-Image Pretraining (CLIP) provides strong…

Computer Vision and Pattern Recognition · Computer Science 2025-10-22 Wei-Chia Chang , Yan-Ann Chen

Multimodal Large Language Models (MLLMs) demonstrate remarkable capabilities but often struggle with complex, multi-step mathematical reasoning, where minor errors in visual perception or logical deduction can lead to complete failure.…

Computation and Language · Computer Science 2025-08-08 Jianghangfan Zhang , Yibo Yan , Kening Zheng , Xin Zou , Song Dai , Xuming Hu

This paper introduces an open-source benchmark for evaluating Vision-Language Models (VLMs) on Optical Character Recognition (OCR) tasks in dynamic video environments. We present a curated dataset containing 1,477 manually annotated frames…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 Sankalp Nagaonkar , Augustya Sharma , Ashish Choithani , Ashutosh Trivedi

Vision-language models (VLMs) are impactful in part because they can be applied to a variety of visual understanding tasks in a zero-shot fashion, without any fine-tuning. We study $\textit{generative VLMs}$ that are trained for next-word…

Computer Vision and Pattern Recognition · Computer Science 2024-05-16 Zhiqiu Lin , Xinyue Chen , Deepak Pathak , Pengchuan Zhang , Deva Ramanan

Recent advances in vision-language models (VLMs) have enabled powerful multimodal reasoning, but state-of-the-art approaches typically rely on extremely large models with prohibitive computational and memory requirements. This makes their…

Computer Vision and Pattern Recognition · Computer Science 2025-09-22 Abdarahmane Traore , Éric Hervet , Andy Couturier