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In this paper, we address the problem of high performance and computationally efficient content-based video retrieval in large-scale datasets. Current methods typically propose either: (i) fine-grained approaches employing spatio-temporal…

Computer Vision and Pattern Recognition · Computer Science 2022-08-08 Giorgos Kordopatis-Zilos , Christos Tzelepis , Symeon Papadopoulos , Ioannis Kompatsiaris , Ioannis Patras

Vision-Language Models (VLMs) have revolutionized multi-modal learning by jointly processing visual and textual information. Yet, they face significant challenges due to the high computational and memory demands of processing long sequences…

Computer Vision and Pattern Recognition · Computer Science 2026-05-21 Yvon Apedo , Martyna Poreba , Michal Szczepanski , Samia Bouchafa

Multimodal retrieval systems struggle to resolve image-text queries against text-only corpora: the best vision-language encoder achieves only 27.6 nDCG@10 on MM-BRIGHT, underperforming strong text-only retrievers. We argue the bottleneck is…

Composed video retrieval (CoVR) is a challenging problem in computer vision which has recently highlighted the integration of modification text with visual queries for more sophisticated video search in large databases. Existing works…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Omkar Thawakar , Muzammal Naseer , Rao Muhammad Anwer , Salman Khan , Michael Felsberg , Mubarak Shah , Fahad Shahbaz Khan

Composed Video Retrieval (CoVR) facilitates video retrieval by combining visual and textual queries. However, existing CoVR frameworks typically fuse multimodal inputs in a single stage, achieving only marginal gains over initial baseline.…

Computer Vision and Pattern Recognition · Computer Science 2026-01-26 Yuqian Zheng , Mariana-Iuliana Georgescu

The rapid success of Vision Large Language Models (VLLMs) often depends on the high-resolution images with abundant visual tokens, which hinders training and deployment efficiency. Current training-free visual token compression methods…

Computer Vision and Pattern Recognition · Computer Science 2025-02-27 Jianjian Li , Junquan Fan , Feng Tang , Gang Huang , Shitao Zhu , Songlin Liu , Nian Xie , Wulong Liu , Yong Liao

Text-video retrieval, a prominent sub-field within the domain of multimodal information retrieval, has witnessed remarkable growth in recent years. However, existing methods assume video scenes are consistent with unbiased descriptions.…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Huy Le , Tung Kieu , Anh Nguyen , Ngan Le

Engineering drawings are fundamental to manufacturing communication, serving as the primary medium for conveying design intent, tolerances, and production details. However, interpreting complex multi-view drawings with dense annotations…

Computer Vision and Pattern Recognition · Computer Science 2026-01-26 Muhammad Tayyab Khan , Zane Yong , Lequn Chen , Wenhe Feng , Nicholas Yew Jin Tan , Seung Ki Moon

Unified vision-language frameworks have greatly advanced in recent years, most of which adopt an encoder-decoder architecture to unify image-text tasks as sequence-to-sequence generation. However, existing video-language (VidL) models still…

Computer Vision and Pattern Recognition · Computer Science 2022-06-16 Linjie Li , Zhe Gan , Kevin Lin , Chung-Ching Lin , Zicheng Liu , Ce Liu , Lijuan Wang

Multimodal retrieval systems typically employ Vision Language Models (VLMs) that encode images and text independently into vectors within a shared embedding space. Despite incorporating text encoders, VLMs consistently underperform…

Information Retrieval · Computer Science 2026-01-22 Xinyuan Zhang , Lina Zhang , Lisung Chen , Guangyao Liu , Shuai Nie , Jiaming Xu , Runyu Shi , Ying Huang , Guoquan Zhang

Vision Language Models (VLMs) provide rich semantic priors but are underexplored in Semi supervised Semantic Segmentation. Recent attempts to integrate VLMs to inject high level semantics overlook the semantic misalignment between visual…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Numair Nadeem , Saeed Anwar , Muhammad Hamza Asad , Abdul Bais

Multimodal Large Language Models (MLLMs) encounter significant computational and memory bottlenecks from the massive number of visual tokens generated by high-resolution images or multi-image inputs. Previous token compression techniques…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Jiaying Zhu , Yurui Zhu , Xin Lu , Wenrui Yan , Dong Li , Kunlin Liu , Xueyang Fu , Zheng-Jun Zha

Video-Text Retrieval (VTR) aims to search for the most relevant video related to the semantics in a given sentence, and vice versa. In general, this retrieval task is composed of four successive steps: video and textual feature…

Computer Vision and Pattern Recognition · Computer Science 2023-02-27 Cunjuan Zhu , Qi Jia , Wei Chen , Yanming Guo , Yu Liu

Vision-Language Models (VLMs) achieve outstanding performance, yet their huge model size severely hinders deployment on edge devices with limited resources. As an efficient model compression technique, vector quantization (VQ) excels in…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Zhong Wang , Zukang Xu , Xing Hu , Dawei Yang

Multimodal Large Language Models (MLLMs) still struggle with fine-grained visual understanding, where answers often depend on small but decisive evidence in the full image. We observe a regional-to-global perception gap: the same MLLM…

Computer Vision and Pattern Recognition · Computer Science 2026-05-28 Qianhao Yuan , Jie Lou , Xing Yu , Hongyu Lin , Le Sun , Xianpei Han , Yaojie Lu

Vision-and-Language Pre-training (VLP) has improved performance on various joint vision-and-language downstream tasks. Current approaches to VLP heavily rely on image feature extraction processes, most of which involve region supervision…

Machine Learning · Statistics 2021-06-11 Wonjae Kim , Bokyung Son , Ildoo Kim

Vision-Language Pre-training (VLP) shows remarkable progress with the assistance of extremely heavy parameters, which challenges deployment in real applications. Knowledge distillation is well recognized as the essential procedure in model…

Computer Vision and Pattern Recognition · Computer Science 2023-08-25 Huafeng Kuang , Jie Wu , Xiawu Zheng , Ming Li , Xuefeng Xiao , Rui Wang , Min Zheng , Rongrong Ji

Document retrieval is an important task for search and Retrieval-Augmented Generation (RAG) applications. Large Language Models (LLMs) have contributed to improving the accuracy of text-based document retrieval. However, documents with…

Information Retrieval · Computer Science 2025-05-22 Radek Osmulski , Gabriel de Souza P. Moreira , Ronay Ak , Mengyao Xu , Benedikt Schifferer , Even Oldridge

Recent studies have adapted generative Multimodal Large Language Models (MLLMs) into embedding extractors for vision tasks, typically through fine-tuning to produce universal representations. However, their performance on video remains…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Issar Tzachor , Dvir Samuel , Rami Ben-Ari

This paper proposes a cross-modal distillation framework, PartDistill, which transfers 2D knowledge from vision-language models (VLMs) to facilitate 3D shape part segmentation. PartDistill addresses three major challenges in this task: the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-17 Ardian Umam , Cheng-Kun Yang , Min-Hung Chen , Jen-Hui Chuang , Yen-Yu Lin