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Creating relightable urban scenes from images or videos is widely useful but highly ill-posed. Urban environments are typically unbounded and extend beyond the visible regions. As a result, many portions of the scene remain unobserved, yet…

计算机视觉与模式识别 · 计算机科学 2026-05-29 Yonghao Zhao , Zexin Yin , Jian Yang , Beibei Wang , Jin Xie

In this paper, we present a technique for estimating the geometry and reflectance of objects using only a camera, flashlight, and optionally a tripod. We propose a simple data capture technique in which the user goes around the object,…

计算机视觉与模式识别 · 计算机科学 2021-04-14 Daniel Lichy , Jiaye Wu , Soumyadip Sengupta , David W. Jacobs

Illumination estimation is often used in mixed reality to re-render a scene from another point of view, to change the color/texture of an object, or to insert a virtual object consistently lit into a real video or photograph. Specifically,…

计算机视觉与模式识别 · 计算机科学 2018-12-13 Grégoire Nieto , Salma Jiddi , Philippe Robert

Creative processes such as painting often involve creating different components of an image one by one. Can we build a computational model to perform this task? Prior works often fail by making global changes to the image, inserting objects…

计算机视觉与模式识别 · 计算机科学 2024-12-25 Alper Canberk , Maksym Bondarenko , Ege Ozguroglu , Ruoshi Liu , Carl Vondrick

Manipulating the light source of given images is an interesting task and useful in various applications, including photography and cinematography. Existing methods usually require additional information like the geometric structure of the…

计算机视觉与模式识别 · 计算机科学 2020-10-16 Li-Wen Wang , Wan-Chi Siu , Zhi-Song Liu , Chu-Tak Li , Daniel P. K. Lun

Given a portrait image of a person and an environment map of the target lighting, portrait relighting aims to re-illuminate the person in the image as if the person appeared in an environment with the target lighting. To achieve…

计算机视觉与模式识别 · 计算机科学 2023-08-14 Yu-Ying Yeh , Koki Nagano , Sameh Khamis , Jan Kautz , Ming-Yu Liu , Ting-Chun Wang

We introduce LightIt, a method for explicit illumination control for image generation. Recent generative methods lack lighting control, which is crucial to numerous artistic aspects of image generation such as setting the overall mood or…

计算机视觉与模式识别 · 计算机科学 2024-03-26 Peter Kocsis , Julien Philip , Kalyan Sunkavalli , Matthias Nießner , Yannick Hold-Geoffroy

Night images suffer not only from low light, but also from uneven distributions of light. Most existing night visibility enhancement methods focus mainly on enhancing low-light regions. This inevitably leads to over enhancement and…

计算机视觉与模式识别 · 计算机科学 2022-09-20 Yeying Jin , Wenhan Yang , Robby T. Tan

We introduce the task of local relighting, which changes a photograph of a scene by switching on and off the light sources that are visible within the image. This new task differs from the traditional image relighting problem, as it…

计算机视觉与模式识别 · 计算机科学 2022-07-07 Audrey Cui , Ali Jahanian , Agata Lapedriza , Antonio Torralba , Shahin Mahdizadehaghdam , Rohit Kumar , David Bau

We propose DeRenderNet, a deep neural network to decompose the albedo and latent lighting, and render shape-(in)dependent shadings, given a single image of an outdoor urban scene, trained in a self-supervised manner. To achieve this goal,…

计算机视觉与模式识别 · 计算机科学 2021-04-29 Yongjie Zhu , Jiajun Tang , Si Li , Boxin Shi

Memory-effect-based methods have been demonstrated to be feasible to observe hidden objects through thin scattering layers, even from a single-shot speckle pattern. However, most of the existing methods are performed with narrowband…

图像与视频处理 · 电气工程与系统科学 2018-09-20 Tengfei Wu , Chengfei Guo , Xiaopeng Shao

Camera arrays provide spatial and angular information within a single snapshot. With refocusing methods, focal planes can be altered after exposure. In this letter, we propose a light field refocusing method to improve the imaging quality…

图像与视频处理 · 电气工程与系统科学 2021-08-29 Yingqian Wang , Jungang Yang , Yulan Guo , Chao Xiao , Wei An

Image restoration is a low-level visual task, and most CNN methods are designed as black boxes, lacking transparency and intrinsic aesthetics. Many unsupervised approaches ignore the degradation of visible information in low-light scenes,…

计算机视觉与模式识别 · 计算机科学 2023-08-01 Qihan Zhao , Xiaofeng Zhang , Hao Tang , Chaochen Gu , Shanying Zhu

Lighting is a determining factor in photography that affects the style, expression of emotion, and even quality of images. Creating or finding satisfying lighting conditions, in reality, is laborious and time-consuming, so it is of great…

计算机视觉与模式识别 · 计算机科学 2022-08-31 Zuo-Liang Zhu , Zhen Li , Rui-Xun Zhang , Chun-Le Guo , Ming-Ming Cheng

Synthesizing a densely sampled light field from a single image is highly beneficial for many applications. The conventional method reconstructs a depth map and relies on physical-based rendering and a secondary network to improve the…

计算机视觉与模式识别 · 计算机科学 2019-04-01 Andre Ivan , Williem , In Kyu Park

This paper presents a computational model to recover the most likely interpretation of the 3D scene structure from a planar image, where some objects may occlude others. The estimated scene interpretation is obtained by integrating some…

计算机视觉与模式识别 · 计算机科学 2016-03-30 Maria Oliver , Gloria Haro , Mariella Dimiccoli , Baptiste Mazin , Coloma Ballester

We present a learning-based technique for estimating high dynamic range (HDR), omnidirectional illumination from a single low dynamic range (LDR) portrait image captured under arbitrary indoor or outdoor lighting conditions. We train our…

计算机视觉与模式识别 · 计算机科学 2020-08-07 Chloe LeGendre , Wan-Chun Ma , Rohit Pandey , Sean Fanello , Christoph Rhemann , Jason Dourgarian , Jay Busch , Paul Debevec

We present a lighting-aware image editing pipeline that, given a portrait image and a text prompt, performs single image relighting. Our model modifies the lighting and color of both the foreground and background to align with the provided…

计算机视觉与模式识别 · 计算机科学 2024-12-19 Junuk Cha , Mengwei Ren , Krishna Kumar Singh , He Zhang , Yannick Hold-Geoffroy , Seunghyun Yoon , HyunJoon Jung , Jae Shin Yoon , Seungryul Baek

Detecting objects in low-light scenarios presents a persistent challenge, as detectors trained on well-lit data exhibit significant performance degradation on low-light data due to low visibility. Previous methods mitigate this issue by…

计算机视觉与模式识别 · 计算机科学 2024-03-28 Zhipeng Du , Miaojing Shi , Jiankang Deng

Being able to see beyond the direct line of sight is an intriguing prospective and could benefit a wide variety of important applications. Recent work has demonstrated that time-resolved measurements of indirect diffuse light contain…

图形学 · 计算机科学 2019-10-24 Julian Iseringhausen , Matthias B. Hullin