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We propose an Gaussian Mixture Model (GMM) learning algorithm, based on our previous work of GMM expansion idea. The new algorithm brings more robustness and simplicity than classic Expectation Maximization (EM) algorithm. It also improves…

机器学习 · 计算机科学 2023-09-07 Weiguo Lu , Xuan Wu , Deng Ding , Gangnan Yuan

Video summarization aims to distill the most important information from a source video to produce either an abridged clip or a textual narrative. Traditionally, different methods have been proposed depending on whether the output is a video…

计算机视觉与模式识别 · 计算机科学 2024-04-24 Jingyang Lin , Hang Hua , Ming Chen , Yikang Li , Jenhao Hsiao , Chiuman Ho , Jiebo Luo

Video matting has traditionally been limited by the lack of high-quality ground-truth data. Most existing video matting datasets provide only human-annotated imperfect alpha and foreground annotations, which must be composited to background…

计算机视觉与模式识别 · 计算机科学 2025-08-12 Yongtao Ge , Kangyang Xie , Guangkai Xu , Mingyu Liu , Li Ke , Longtao Huang , Hui Xue , Hao Chen , Chunhua Shen

Image Quality Assessment (IQA) remains an unresolved challenge in computer vision due to complex distortions, diverse image content, and limited data availability. Existing Blind IQA (BIQA) methods largely rely on extensive human…

计算机视觉与模式识别 · 计算机科学 2025-09-23 Xudong Li , Zihao Huang , Yan Zhang , Yunhang Shen , Ke Li , Xiawu Zheng , Liujuan Cao , Rongrong Ji

Recent advancements in video understanding within visual large language models (VLLMs) have led to notable progress. However, the complexity of video data and contextual processing limitations still hinder long-video comprehension. A common…

计算机视觉与模式识别 · 计算机科学 2025-04-30 Yanan Guo , Wenhui Dong , Jun Song , Shiding Zhu , Xuan Zhang , Hanqing Yang , Yingbo Wang , Yang Du , Xianing Chen , Bo Zheng

Combining pre-trained expert models offers substantial potential for scalable multimodal reasoning, but building a unified framework remains challenging due to the increasing diversity of input modalities and task complexity. For instance,…

计算机视觉与模式识别 · 计算机科学 2025-10-28 Shoubin Yu , Yue Zhang , Ziyang Wang , Jaehong Yoon , Mohit Bansal

Multimodal recommender systems leverage diverse data sources, such as user interactions, content features, and contextual information, to address challenges like cold-start and data sparsity. However, existing methods often suffer from one…

信息检索 · 计算机科学 2026-02-24 Adamya Shyam , Venkateswara Rao Kagita , Bharti Rana , Vikas Kumar

Leveraging pre-trained visual language models has become a widely adopted approach for improving performance in downstream visual question answering (VQA) applications. However, in the specialized field of medical VQA, the scarcity of…

计算机视觉与模式识别 · 计算机科学 2024-03-06 Gang Liu , Hongyang Li , Zerui He , Shenjun Zhong

The remarkable multimodal capabilities demonstrated by OpenAI's GPT-4 have sparked significant interest in the development of multimodal Large Language Models (LLMs). A primary research objective of such models is to align visual and…

计算机视觉与模式识别 · 计算机科学 2023-12-29 Yanda Li , Chi Zhang , Gang Yu , Zhibin Wang , Bin Fu , Guosheng Lin , Chunhua Shen , Ling Chen , Yunchao Wei

Vision-language tracking has gained increasing attention in many scenarios. This task simultaneously deals with visual and linguistic information to localize objects in videos. Despite its growing utility, the development of vision-language…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Xingyu Luo , Yidong Cai , Jie Liu , Jie Tang , Gangshan Wu , Limin Wang

Recent advancements in diffusion models have significantly improved video generation and editing capabilities. However, multi-grained video editing, which encompasses class-level, instance-level, and part-level modifications, remains a…

计算机视觉与模式识别 · 计算机科学 2025-02-25 Xiangpeng Yang , Linchao Zhu , Hehe Fan , Yi Yang

Data augmentation has been shown to effectively improve the performance of multimodal machine learning models. This paper introduces a generative model for data augmentation by leveraging the correlations among multiple modalities.…

计算机视觉与模式识别 · 计算机科学 2021-10-26 Zixu Wang , Yishu Miao , Lucia Specia

Shortcut models represent a promising, non-adversarial paradigm for generative modeling, uniquely supporting one-step, few-step, and multi-step sampling from a single trained network. However, their widespread adoption has been stymied by…

计算机视觉与模式识别 · 计算机科学 2025-10-27 Anh Nguyen , Viet Nguyen , Duc Vu , Trung Dao , Chi Tran , Toan Tran , Anh Tran

Video Question Answering (VideoQA) is a very attractive and challenging research direction aiming to understand complex semantics of heterogeneous data from two domains, i.e., the spatio-temporal video content and the word sequence in…

计算机视觉与模式识别 · 计算机科学 2023-12-21 Chengxiang Yin , Zhengping Che , Kun Wu , Zhiyuan Xu , Qinru Qiu , Jian Tang

Fusing data from multiple modalities provides more information to train machine learning systems. However, it is prohibitively expensive and time-consuming to label each modality with a large amount of data, which leads to a crucial problem…

计算机视觉与模式识别 · 计算机科学 2020-07-15 Xinwei Sun , Yilun Xu , Peng Cao , Yuqing Kong , Lingjing Hu , Shanghang Zhang , Yizhou Wang

Recently, Vision-Language Models (VLMs) have achieved remarkable progress in multimodal tasks, and multimodal instruction data serves as the foundation for enhancing VLM capabilities. Despite the availability of several open-source…

In recent years, considerable progress on the task of text-video retrieval has been achieved by leveraging large-scale pretraining on visual and audio datasets to construct powerful video encoders. By contrast, despite the natural symmetry,…

计算机视觉与模式识别 · 计算机科学 2021-09-28 Ioana Croitoru , Simion-Vlad Bogolin , Marius Leordeanu , Hailin Jin , Andrew Zisserman , Samuel Albanie , Yang Liu

Textual descriptions for multimodal inputs entail recurrent refinement of queries to produce relevant output images. Despite efforts to address challenges such as scaling model size and data volume, the cost associated with pre-training and…

机器学习 · 计算机科学 2025-08-14 Amit Kumar Jaiswal , Haiming Liu , Ingo Frommholz

Accurate and efficient Video Quality Assessment (VQA) has long been a key research challenge. Current mainstream VQA methods typically improve performance by pretraining on large-scale classification datasets (e.g., ImageNet, Kinetics-400),…

计算机视觉与模式识别 · 计算机科学 2025-10-10 Yachun Mi , Yu Li , Yanting Li , Chen Hui , Tong Zhang , Zhixuan Li , Chenyue Song , Wei Yang Bryan Lim , Shaohui Liu

Vision-Language Models (VLMs) have achieved remarkable progress in multimodal understanding, yet their positional encoding mechanisms remain suboptimal. Existing approaches uniformly assign positional indices to all tokens, overlooking…

计算机视觉与模式识别 · 计算机科学 2026-04-15 Ruoxiang Huang , Zhen Yuan