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Realistic shadow generation is crucial for achieving seamless image compositing, yet existing methods primarily focus on single-object insertion and often fail to generalize when multiple foreground objects are composited into a background…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Waqas Ahmed , Dean Diepeveen , Ferdous Sohel

Generating realistic shadows for inserted objects requires reasoning about scene geometry and illumination. However, most existing methods operate purely in image space, leaving the physical relationship between objects, lighting, and…

Computer Vision and Pattern Recognition · Computer Science 2026-03-20 Shilin Hu , Jingyi Xu , Akshat Dave , Dimitris Samaras , Hieu Le

In the realm of image composition, generating realistic shadow for the inserted foreground remains a formidable challenge. Previous works have developed image-to-image translation models which are trained on paired training data. However,…

Computer Vision and Pattern Recognition · Computer Science 2024-03-25 Qingyang Liu , Junqi You , Jianting Wang , Xinhao Tao , Bo Zhang , Li Niu

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

Video Shadow Detection (VSD) aims to detect the shadow masks with frame sequence. Existing works suffer from inefficient temporal learning. Moreover, few works address the VSD problem by considering the characteristic (i.e., boundary) of…

Computer Vision and Pattern Recognition · Computer Science 2024-08-22 Haipeng Zhou , Honqiu Wang , Tian Ye , Zhaohu Xing , Jun Ma , Ping Li , Qiong Wang , Lei Zhu

Creating novel images by fusing visual cues from multiple sources is a fundamental yet underexplored problem in image-to-image generation, with broad applications in artistic creation, virtual reality and visual media. Existing methods…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Zeren Xiong , Yue Yu , Zedong Zhang , Shuo Chen , Jian Yang , Jun Li

Achieving high-quality shadow removal with strong generalizability is challenging in scenes with complex global illumination. Due to the limited diversity in shadow removal datasets, current methods are prone to overfitting training data,…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Jiamin Xu , Yuxin Zheng , Zelong Li , Chi Wang , Renshu Gu , Weiwei Xu , Gang Xu

We introduce a high-fidelity portrait shadow removal model that can effectively enhance the image of a portrait by predicting its appearance under disturbing shadows and highlights. Portrait shadow removal is a highly ill-posed problem…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Jae Shin Yoon , Zhixin Shu , Mengwei Ren , Xuaner Zhang , Yannick Hold-Geoffroy , Krishna Kumar Singh , He Zhang

We present a diffusion-based portrait shadow removal approach that can robustly produce high-fidelity results. Unlike previous methods, we cast shadow removal as diffusion-based inpainting. To this end, we first train a shadow-independent…

Computer Vision and Pattern Recognition · Computer Science 2025-07-15 Wanchang Yu , Qing Zhang , Rongjia Zheng , Wei-Shi Zheng

Realistic shadow generation is a critical component for high-quality image compositing and visual effects, yet existing methods suffer from certain limitations: Physics-based approaches require a 3D scene geometry, which is often…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Onur Tasar , Clément Chadebec , Benjamin Aubin

Video face restoration aims to enhance degraded face videos into high-quality results with realistic facial details, stable identity, and temporal coherence. Recent diffusion-based methods have brought strong generative priors to…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Zheng Chen , Bowen Chai , Rongjun Gao , Mingtao Nie , Xi Li , Bingnan Duan , Jianping Fang , Xiaohong Liu , Linghe Kong , Yulun Zhang

Image composition targets at inserting a foreground object into a background image. Most previous image composition methods focus on adjusting the foreground to make it compatible with background while ignoring the shadow effect of…

Computer Vision and Pattern Recognition · Computer Science 2022-05-12 Yan Hong , Li Niu , Jianfu Zhang , Liqing Zhang

Image composition refers to inserting a foreground object into a background image to obtain a composite image. In this work, we focus on generating plausible shadows for the inserted foreground object to make the composite image more…

Computer Vision and Pattern Recognition · Computer Science 2024-01-05 Xinhao Tao , Junyan Cao , Yan Hong , Li Niu

Gaussian Splatting has achieved remarkable progress in multi-view surface reconstruction, yet it exhibits notable degradation when only few views are available. Although recent efforts alleviate this issue by enhancing multi-view…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Jimin Tang , Wenyuan Zhang , Junsheng Zhou , Zian Huang , Kanle Shi , Shenkun Xu , Yu-Shen Liu , Zhizhong Han

Previous raw image-based low-light image enhancement methods predominantly relied on feed-forward neural networks to learn deterministic mappings from low-light to normally-exposed images. However, they failed to capture critical…

Computer Vision and Pattern Recognition · Computer Science 2023-08-16 Yufei Wang , Yi Yu , Wenhan Yang , Lanqing Guo , Lap-Pui Chau , Alex C. Kot , Bihan Wen

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

Recent work has shown that diffusion models can serve as powerful neural rendering engines that can be leveraged for inserting virtual objects into images. However, unlike typical physics-based renderers, these neural rendering engines are…

Computer Vision and Pattern Recognition · Computer Science 2025-12-12 Frédéric Fortier-Chouinard , Zitian Zhang , Louis-Etienne Messier , Mathieu Garon , Anand Bhattad , Jean-François Lalonde

Conditional diffusion models have demonstrated impressive performance in image manipulation tasks. The general pipeline involves adding noise to the image and then denoising it. However, this method faces a trade-off problem: adding too…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Luozhou Wang , Shuai Yang , Shu Liu , Ying-cong Chen

Volumetric video relighting is essential for bringing captured performances into virtual worlds, but current approaches struggle to deliver temporally stable, production-ready results. Diffusion-based intrinsic decomposition methods show…

Computer Vision and Pattern Recognition · Computer Science 2026-01-23 Elisabeth Jüttner , Janelle Pfeifer , Leona Krath , Stefan Korfhage , Hannah Dröge , Matthias B. Hullin , Markus Plack

Generating high-resolution images with generative models has recently been made widely accessible by leveraging diffusion models pre-trained on large-scale datasets. Various techniques, such as MultiDiffusion and SyncDiffusion, have further…

Computer Vision and Pattern Recognition · Computer Science 2025-01-08 Stanislav Frolov , Brian B. Moser , Andreas Dengel
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