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Low-light image enhancement (LLIE) is a pervasive yet challenging problem, since: 1) low-light measurements may vary due to different imaging conditions in practice; 2) images can be enlightened subjectively according to diverse preferences…

计算机视觉与模式识别 · 计算机科学 2021-07-14 Rongkai Zhang , Lanqing Guo , Siyu Huang , Bihan Wen

Existing research has made impressive strides in reconstructing human facial shapes and textures from images with well-illuminated faces and minimal external occlusions. Nevertheless, it remains challenging to recover accurate facial…

计算机视觉与模式识别 · 计算机科学 2024-12-12 Tianxin Huang , Zhenyu Zhang , Ying Tai , Gim Hee Lee

At the heart of the success of deep learning is the quality of the data. Through data augmentation, one can train models with better generalization capabilities and thus achieve greater results in their field of interest. In this work, we…

计算机视觉与模式识别 · 计算机科学 2021-10-28 George Chogovadze , Rémi Pautrat , Marc Pollefeys

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

Self-supervised low-light image enhancement (LLIE) is highly appealing as it eliminates the reliance on external paired data. However, the lack of external references causes networks to struggle with decoupling entangled illumination,…

计算机视觉与模式识别 · 计算机科学 2026-05-28 Peiyuan He , Hainuo Wang , Hengxing Liu , Mingjia Li , Xiaojie Guo

We present a learning-based method for estimating 4D reflectance field of a person given video footage illuminated under a flat-lit environment of the same subject. For training data, we use one light at a time to illuminate the subject and…

计算机视觉与模式识别 · 计算机科学 2021-04-08 Loc Huynh , Bipin Kishore , Paul Debevec

Image retargeting, which resizes images to one with a prescribed aspect ratio by determining an optimal warping map, has gained substantial interest in imaging science. Despite significant advances, existing methods often fail to ensure…

数值分析 · 数学 2025-10-16 Chengyang Liu , Michael K. Ng

We present a novel diffusion-based approach for coherent 3D scene reconstruction from a single RGB image. Our method utilizes an image-conditioned 3D scene diffusion model to simultaneously denoise the 3D poses and geometries of all objects…

计算机视觉与模式识别 · 计算机科学 2024-12-16 Manuel Dahnert , Angela Dai , Norman Müller , Matthias Nießner

Recent approaches for 3D relighting have shown promise in integrating 2D image relighting generative priors to alter the appearance of a 3D representation while preserving the underlying structure. Nevertheless, generative priors used for…

计算机视觉与模式识别 · 计算机科学 2025-08-11 Yehonathan Litman , Fernando De la Torre , Shubham Tulsiani

Relighting radiance fields is severely underconstrained for multi-view data, which is most often captured under a single illumination condition; It is especially hard for full scenes containing multiple objects. We introduce a method to…

计算机视觉与模式识别 · 计算机科学 2024-09-18 Yohan Poirier-Ginter , Alban Gauthier , Julien Philip , Jean-Francois Lalonde , George Drettakis

As vision based perception methods are usually built on the normal light assumption, there will be a serious safety issue when deploying them into low light environments. Recently, deep learning based methods have been proposed to enhance…

计算机视觉与模式识别 · 计算机科学 2020-10-21 Junjie Hu , Xiyue Guo , Junfeng Chen , Guanqi Liang , Fuqin Deng , Tin lun Lam

Recently, denoising methods based on supervised learning have exhibited promising performance. However, their reliance on external datasets containing noisy-clean image pairs restricts their applicability. To address this limitation,…

计算机视觉与模式识别 · 计算机科学 2023-07-21 Jaekyun Ko , Sanghwan Lee

Faithful manipulation of shape, material, and illumination in 2D Internet images would greatly benefit from a reliable factorization of appearance into material (i.e., diffuse and specular) and illumination (i.e., environment maps). On the…

图形学 · 计算机科学 2017-11-15 Tuanfeng Y. Wang , Tobias Ritschel , Niloy J. Mitra

To enhance low-light images to normally-exposed ones is highly ill-posed, namely that the mapping relationship between them is one-to-many. Previous works based on the pixel-wise reconstruction losses and deterministic processes fail to…

图像与视频处理 · 电气工程与系统科学 2021-09-14 Yufei Wang , Renjie Wan , Wenhan Yang , Haoliang Li , Lap-Pui Chau , Alex C. Kot

Haze and fog reduce the visibility of outdoor scenes as a veil like semi-transparent layer appears over the objects. As a result, images captured under such conditions lack contrast. Image dehazing methods try to alleviate this problem by…

计算机视觉与模式识别 · 计算机科学 2018-11-28 Shirsendu Sukanta Halder , Sanchayan Santra , Bhabatosh Chanda

Lensless cameras relax the design constraints of traditional cameras by shifting image formation from analog optics to digital post-processing. While new camera designs and applications can be enabled, lensless imaging is very sensitive to…

图像与视频处理 · 电气工程与系统科学 2025-01-22 Eric Bezzam , Stefan Peters , Martin Vetterli

In this letter, we present a genetic algorithm-based approach for image retrieval through a multimode fiber in a reference-less system. Due to mode interference, when an image is illuminated at one side of a multimode fiber, the transmitted…

图像与视频处理 · 电气工程与系统科学 2018-11-16 Michael Ruddlesden , Jinshuai Zhang , Tianrui Zhao , Wen Wang , Lei Su

Simply by rearranging the regions of an image, we can create a new image of any subject matter. The definition of regions is user definable, ranging from regularly and irregularly-shaped blocks, concentric rings, or even individual pixels.…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Shumeet Baluja , David Marwood , Ashwin Baluja

Single-view intrinsic image decomposition is a highly ill-posed problem, and so a promising approach is to learn from large amounts of data. However, it is difficult to collect ground truth training data at scale for intrinsic images. In…

计算机视觉与模式识别 · 计算机科学 2018-04-03 Zhengqi Li , Noah Snavely

Imaging in low light is challenging due to low photon count and low SNR. Short-exposure images suffer from noise, while long exposure can induce blur and is often impractical. A variety of denoising, deblurring, and enhancement techniques…

计算机视觉与模式识别 · 计算机科学 2018-05-08 Chen Chen , Qifeng Chen , Jia Xu , Vladlen Koltun