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While the fine-grained visual categorization (FGVC) problems have been greatly developed in the past years, the Ultra-fine-grained visual categorization (Ultra-FGVC) problems have been understudied. FGVC aims at classifying objects from the…

Computer Vision and Pattern Recognition · Computer Science 2021-09-17 Zicheng Pan , Xiaohan Yu , Miaohua Zhang , Yongsheng Gao

The data scaling law has been shown to significantly enhance the performance of large multi-modal models (LMMs) across various downstream tasks. However, in the domain of perceptual video quality assessment (VQA), the potential of scaling…

Computer Vision and Pattern Recognition · Computer Science 2025-05-29 Ziheng Jia , Zicheng Zhang , Zeyu Zhang , Yingji Liang , Xiaorong Zhu , Chunyi Li , Jinliang Han , Haoning Wu , Bin Wang , Haoran Zhang , Guanyu Zhu , Qiyong Zhao , Xiaohong Liu , Guangtao Zhai , Xiongkuo Min

We theoretically investigate and optimize four-wave mixing (FWM) in silicon nitride (SiN) waveguides integrated with two-dimensional (2D) layered graphene oxide (GO) films. Based on extensive previous measurements of the material parameters…

Optics · Physics 2021-02-16 Yang Qu , Jiayang Wu , Yuning Zhang , Linnan Jia , Yao Liang , Baohua Jia , David J. Moss

The video grounding (VG) task aims to locate the queried action or event in an untrimmed video based on rich linguistic descriptions. Existing proposal-free methods are trapped in complex interaction between video and query, overemphasizing…

Computer Vision and Pattern Recognition · Computer Science 2023-08-14 Kun Li , Dan Guo , Meng Wang

The VMAF (video multi-method assessment fusion) metric for image and video coding recently gained more and more popularity as it is supposed to have a high correlation with human perception. This makes training and particularly fine-tuning…

Image and Video Processing · Electrical Eng. & Systems 2026-03-05 Florian Fingscheidt , Alexander Karabutov , Panqi Jia , Elena Alshina , Jörn Ostermann

Recently, numerous approaches have achieved notable success in compressed video quality enhancement (VQE). However, these methods usually ignore the utilization of valuable coding priors inherently embedded in compressed videos, such as…

Image and Video Processing · Electrical Eng. & Systems 2024-11-21 Qiang Zhu , Jinhua Hao , Yukang Ding , Yu Liu , Qiao Mo , Ming Sun , Chao Zhou , Shuyuan Zhu

Video understanding has been considered as one critical step towards world modeling, which is an important long-term problem in AI research. Recently, multimodal foundation models have shown such potential via large-scale pretraining. These…

Computer Vision and Pattern Recognition · Computer Science 2025-12-23 Boyu Chen , Siran Chen , Kunchang Li , Qinglin Xu , Yu Qiao , Yali Wang

Conventional video compression approaches use the predictive coding architecture and encode the corresponding motion information and residual information. In this paper, taking advantage of both classical architecture in the conventional…

Image and Video Processing · Electrical Eng. & Systems 2019-04-09 Guo Lu , Wanli Ouyang , Dong Xu , Xiaoyun Zhang , Chunlei Cai , Zhiyong Gao

High frame rates have been known to enhance the perceived visual quality of specific video content. However, the lack of investigation of high frame rates has restricted the expansion of this research field particularly in the context of…

Image and Video Processing · Electrical Eng. & Systems 2020-06-05 Tariq Rahim , Muhammad Arslan Usman , Soo Young Shin

Driving video generation has achieved much progress in controllability, video resolution, and length, but fails to support fine-grained object-level controllability for diverse driving videos, while preserving the spatiotemporal…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Li-Heng Chen , Ke Cheng , Yahui Liu , Lei Shi , Shi-Sheng Huang , Hongbo Fu

Fine-Grained Visual Classification(FGVC) is the task that requires recognizing the objects belonging to multiple subordinate categories of a super-category. Recent state-of-the-art methods usually design sophisticated learning pipelines to…

Computer Vision and Pattern Recognition · Computer Science 2022-03-08 Qishuai Diao , Yi Jiang , Bin Wen , Jia Sun , Zehuan Yuan

Pre-trained models with dual and cross encoders have shown remarkable success in propelling the landscape of several tasks in vision and language in Visual Question Answering (VQA). However, since they are limited by the requirements of…

Computation and Language · Computer Science 2023-01-19 Khyathi Raghavi Chandu , Alborz Geramifard

Visual Grounding (VG) in Visual Question Answering (VQA) systems describes how well a system manages to tie a question and its answer to relevant image regions. Systems with strong VG are considered intuitively interpretable and suggest an…

Computer Vision and Pattern Recognition · Computer Science 2022-11-16 Daniel Reich , Felix Putze , Tanja Schultz

Visual grounding is a common vision task that involves grounding descriptive sentences to the corresponding regions of an image. Most existing methods use independent image-text encoding and apply complex hand-crafted modules or…

Computer Vision and Pattern Recognition · Computer Science 2024-10-29 Ming Dai , Lingfeng Yang , Yihao Xu , Zhenhua Feng , Wankou Yang

Remarkable progress has been achieved in image generation with the introduction of generative models. However, precisely controlling the content in generated images remains a challenging task due to their fundamental training objective.…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Giang H. Le , Anh Q. Nguyen , Byeongkeun Kang , Yeejin Lee

The design of video encoders involves the implementation of fast mode decision (FMD) algorithm to reduce computation complexity while maintaining the performance of the coding. Although H.264/scalable video coding (SVC) achieves high…

Multimedia · Computer Science 2020-09-23 L. Balaji , K. K. Thyagharajan

Recent advancements in deep learning techniques have significantly improved the quality of compressed videos. However, previous approaches have not fully exploited the motion characteristics of compressed videos, such as the drastic change…

Image and Video Processing · Electrical Eng. & Systems 2023-02-28 Thong Bach , Thuong Nguyen Canh , Van-Quang Nguyen

Video diffusion models have advanced rapidly in the recent years as a result of series of architectural innovations (e.g., diffusion transformers) and use of novel training objectives (e.g., flow matching). In contrast, less attention has…

Computer Vision and Pattern Recognition · Computer Science 2025-09-12 Dohun Lee , Hyeonho Jeong , Jiwook Kim , Duygu Ceylan , Jong Chul Ye

Recent years have witnessed an exponential increase in the demand for face video compression, and the success of artificial intelligence has expanded the boundaries beyond traditional hybrid video coding. Generative coding approaches have…

Image and Video Processing · Electrical Eng. & Systems 2023-10-31 Yixuan Li , Bolin Chen , Baoliang Chen , Meng Wang , Shiqi Wang , Weisi Lin

Prior research on deep video compression (DVC) for machine tasks typically necessitates training a unique codec for each specific task, mandating a dedicated decoder per task. In contrast, traditional video codecs employ a flexible encoder…

Image and Video Processing · Electrical Eng. & Systems 2024-04-23 Xingtong Ge , Jixiang Luo , Xinjie Zhang , Tongda Xu , Guo Lu , Dailan He , Jing Geng , Yan Wang , Jun Zhang , Hongwei Qin