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Video shadow detection confronts two entwined difficulties: distinguishing shadows from complex backgrounds and modeling dynamic shadow deformations under varying illumination. To address shadow-background ambiguity, we leverage linguistic…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Zhicheng Li , Kunyang Sun , Rui Yao , Hancheng Zhu , Fuyuan Hu , Jiaqi Zhao , Zhiwen Shao , Yong Zhou

Generating realistic cast shadows for inserted foreground objects is a crucial yet challenging problem in image composition, where maintaining geometric consistency of shadow and object in complex scenes remains difficult due to the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Jing Li , Jing Zhang

Shadow detection in a single image has received significant research interest in recent years. However, much fewer works have been explored in shadow detection over dynamic scenes. The bottleneck is the lack of a well-established dataset…

Computer Vision and Pattern Recognition · Computer Science 2021-03-12 Zhihao Chen , Liang Wan , Lei Zhu , Jia Shen , Huazhu Fu , Wennan Liu , Jing Qin

Video Analytics Software as a Service (VA SaaS) has been rapidly growing in recent years. VA SaaS is typically accessed by users using a lightweight client. Because the transmission bandwidth between the client and cloud is usually limited…

Computer Vision and Pattern Recognition · Computer Science 2018-08-16 Zhaoyang Zhang , Zhanghui Kuang , Ping Luo , Litong Feng , Wei Zhang

Generic event boundary detection (GEBD) aims to identify natural boundaries in a video, segmenting it into distinct and meaningful chunks. Despite the inherent subjectivity of event boundaries, previous methods have focused on deterministic…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Jaejun Hwang , Dayoung Gong , Manjin Kim , Minsu Cho

Instance shadow detection, crucial for applications such as photo editing and light direction estimation, has undergone significant advancements in predicting shadow instances, object instances, and their associations. The extension of this…

Computer Vision and Pattern Recognition · Computer Science 2024-09-25 Zhenghao Xing , Tianyu Wang , Xiaowei Hu , Haoran Wu , Chi-Wing Fu , Pheng-Ann Heng

While single image shadow detection has been improving rapidly in recent years, video shadow detection remains a challenging task due to data scarcity and the difficulty in modelling temporal consistency. The current video shadow detection…

Computer Vision and Pattern Recognition · Computer Science 2021-08-02 Shilin Hu , Hieu Le , Dimitris Samaras

Predicting future frames of a video is challenging because it is difficult to learn the uncertainty of the underlying factors influencing their contents. In this paper, we propose a novel video prediction model, which has…

Computer Vision and Pattern Recognition · Computer Science 2024-02-20 Xi Ye , Guillaume-Alexandre Bilodeau

Video streams are delivered continuously to save the cost of storage and device memory. Real-time denoising algorithms are typically adopted on the user device to remove the noise involved during the shooting and transmission of video…

Computer Vision and Pattern Recognition · Computer Science 2022-07-15 Chenyang Qi , Junming Chen , Xin Yang , Qifeng Chen

We present a novel task called online video editing, which is designed to edit \textbf{streaming} frames while maintaining temporal consistency. Unlike existing offline video editing assuming all frames are pre-established and accessible,…

Computer Vision and Pattern Recognition · Computer Science 2024-05-31 Feng Chen , Zhen Yang , Bohan Zhuang , Qi Wu

The goal of scene text image super-resolution is to reconstruct high-resolution text-line images from unrecognizable low-resolution inputs. The existing methods relying on the optimization of pixel-level loss tend to yield text edges that…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Baolin Liu , Zongyuan Yang , Pengfei Wang , Junjie Zhou , Ziqi Liu , Ziyi Song , Yan Liu , Yongping Xiong

Recent deep learning methods have achieved promising results in image shadow removal. However, their restored images still suffer from unsatisfactory boundary artifacts, due to the lack of degradation prior embedding and the deficiency in…

Computer Vision and Pattern Recognition · Computer Science 2022-12-14 Lanqing Guo , Chong Wang , Wenhan Yang , Siyu Huang , Yufei Wang , Hanspeter Pfister , Bihan Wen

Diffusion models have become the foundation of modern generative systems, with most research focusing primarily on improving generation efficiency and output quality. The timestep embedding component is a crucial part of the diffusion…

Machine Learning · Computer Science 2026-05-05 An Huang , Junggab Son , Zuobin Xiong

Text-to-image (T2I) diffusion models have revolutionized visual content creation, but extending these capabilities to text-to-video (T2V) generation remains a challenge, particularly in preserving temporal consistency. Existing methods that…

Computer Vision and Pattern Recognition · Computer Science 2024-12-10 Dohun Lee , Bryan S Kim , Geon Yeong Park , Jong Chul Ye

It is challenging to annotate large-scale datasets for supervised video shadow detection methods. Using a model trained on labeled images to the video frames directly may lead to high generalization error and temporal inconsistent results.…

Computer Vision and Pattern Recognition · Computer Science 2022-06-20 Xiao Lu , Yihong Cao , Sheng Liu , Chengjiang Long , Zipei Chen , Xuanyu Zhou , Yimin Yang , Chunxia Xiao

Despite significant progress in shadow detection, current methods still struggle with the adverse impact of background color, which may lead to errors when shadows are present on complex backgrounds. Drawing inspiration from the human…

Computer Vision and Pattern Recognition · Computer Science 2024-12-10 Runmin Cong , Yuchen Guan , Jinpeng Chen , Wei Zhang , Yao Zhao , Sam Kwong

Video salient object detection (VSOD) aims to locate and segment the most attractive object by exploiting both spatial cues and temporal cues hidden in video sequences. However, spatial and temporal cues are often unreliable in real-world…

Computer Vision and Pattern Recognition · Computer Science 2021-05-17 Peijia Chen , Jianhuang Lai , Guangcong Wang , Huajun Zhou

Recently, large-scale pre-trained vision-language models (e.g., CLIP), have garnered significant attention thanks to their powerful representative capabilities. This inspires researchers in transferring the knowledge from these large…

Computer Vision and Pattern Recognition · Computer Science 2025-06-13 Bin Wang , Wentong Li , Wenqian Wang , Mingliang Gao , Runmin Cong , Wei Zhang

Owing to the difficulties of mining spatial-temporal cues, the existing approaches for video salient object detection (VSOD) are limited in understanding complex and noisy scenarios, and often fail in inferring prominent objects. To…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Yingxia Jiao , Xiao Wang , Yu-Cheng Chou , Shouyuan Yang , Ge-Peng Ji , Rong Zhu , Ge Gao

Time-series anomaly detection (TSAD) requires identifying both immediate Point Anomalies and long-range Context Anomalies. However, existing foundation models face a fundamental trade-off: 1D temporal models provide fine-grained pointwise…

Computer Vision and Pattern Recognition · Computer Science 2026-02-19 Yingyuan Yang , Tian Lan , Yifei Gao , Yimeng Lu , Wenjun He , Meng Wang , Chenghao Liu , Chen Zhang
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