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Most existing super-resolution methods and datasets have been developed to improve the image quality in well-lighted conditions. However, these methods do not work well in real-world low-light conditions as the images captured in such…

Computer Vision and Pattern Recognition · Computer Science 2024-10-18 Yang Liu , Yaofang Liu , Jinshan Pan , Yuxiang Hui , Fan Jia , Raymond H. Chan , Tieyong Zeng

We propose SIR, an efficient method to decompose differentiable shadows for inverse rendering on indoor scenes using multi-view data, addressing the challenges in accurately decomposing the materials and lighting conditions. Unlike previous…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Xiaokang Wei , Zhuoman Liu , Ping Li , Yan Luximon

Most single image super-resolution (SR) methods are developed on synthetic low-resolution (LR) and high-resolution (HR) image pairs, which are simulated by a predetermined degradation operation, e.g., bicubic downsampling. However, these…

Image and Video Processing · Electrical Eng. & Systems 2021-10-22 Rui Ma , Johnathan Czernik , Xian Du

Automatic document content processing is affected by artifacts caused by the shape of the paper, non-uniform and diverse color of lighting conditions. Fully-supervised methods on real data are impossible due to the large amount of data…

Computer Vision and Pattern Recognition · Computer Science 2020-12-01 Sagnik Das , Hassan Ahmed Sial , Ke Ma , Ramon Baldrich , Maria Vanrell , Dimitris Samaras

We present the first end to end approach for real time material estimation for general object shapes with uniform material that only requires a single color image as input. In addition to Lambertian surface properties, our approach fully…

Computer Vision and Pattern Recognition · Computer Science 2018-05-07 Abhimitra Meka , Maxim Maximov , Michael Zollhoefer , Avishek Chatterjee , Hans-Peter Seidel , Christian Richardt , Christian Theobalt

Deep learning has demonstrated its power in image rectification by leveraging the representation capacity of deep neural networks via supervised training based on a large-scale synthetic dataset. However, the model may overfit the synthetic…

Computer Vision and Pattern Recognition · Computer Science 2021-06-21 Jinlong Fan , Jing Zhang , Dacheng Tao

While invaluable for many computer vision applications, decomposing a natural image into intrinsic reflectance and shading layers represents a challenging, underdetermined inverse problem. As opposed to strict reliance on conventional…

Computer Vision and Pattern Recognition · Computer Science 2018-09-03 Qingnan Fan , Jiaolong Yang , Gang Hua , Baoquan Chen , David Wipf

Real-world low-light images captured by imaging devices suffer from poor visibility and require a domain-specific enhancement to produce artifact-free outputs that reveal details. In this paper, we propose an unpaired low-light image…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Aupendu Kar , Sobhan K. Dhara , Debashis Sen , Prabir K. Biswas

Single image scene relighting aims to generate a realistic new version of an input image so that it appears to be illuminated by a new target light condition. Although existing works have explored this problem from various perspectives,…

Computer Vision and Pattern Recognition · Computer Science 2024-09-30 Yixiong Yang , Hassan Ahmed Sial , Ramon Baldrich , Maria Vanrell

Underwater images captured by Autonomous Underwater Vehicles (AUVs) are inevitably affected by artificial light sources, which often produce halos in the foreground of the camera and seriously interfere with the quality of the image. The…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Jiaxin Yang , Honglin Liu , Yongli Wang , Shuyi Cao , Chengcheng Jiang , Jiale Wang

Underwater Image Enhancement (UIE) aims to improve the visual quality from a low-quality input. Unlike other image enhancement tasks, underwater images suffer from the unavailability of real reference images. Although existing works exploit…

Computer Vision and Pattern Recognition · Computer Science 2024-06-10 Shuaixin Liu , Kunqian Li , Yilin Ding , Qi Qi

Super-resolution (SR) and image generation are important tasks in computer vision and are widely adopted in real-world applications. Most existing methods, however, generate images only at fixed-scale magnification and suffer from…

Computer Vision and Pattern Recognition · Computer Science 2024-03-18 Jinseok Kim , Tae-Kyun Kim

We present a new deep supervised learning method for intrinsic decomposition of a single image into its albedo and shading components. Our contributions are based on a new fully convolutional neural network that estimates absolute albedo…

Computer Vision and Pattern Recognition · Computer Science 2018-03-21 Louis Lettry , Kenneth Vanhoey , Luc Van Gool

The purpose of intrinsic decomposition is to separate an image into its albedo (reflective properties) and shading components (illumination properties). This is challenging because it's an ill-posed problem. Conventional approaches…

Computer Vision and Pattern Recognition · Computer Science 2024-03-29 Xiaoyan Xing , Konrad Groh , Sezer Karaoglu , Theo Gevers

We propose a novel intrinsic image decomposition network considering reflectance consistency. Intrinsic image decomposition aims to decompose an image into illumination-invariant and illumination-variant components, referred to as…

Computer Vision and Pattern Recognition · Computer Science 2021-11-09 Yuma Kinoshita , Hitoshi Kiya

Intrinsic image decomposition is the process of separating the reflectance and shading layers of an image, which is a challenging and underdetermined problem. In this paper, we propose to systematically address this problem using a deep…

Computer Vision and Pattern Recognition · Computer Science 2018-07-31 Sai Bi , Nima Khademi Kalantari , Ravi Ramamoorthi

Restoring real-world degraded images, such as old photographs or low-resolution images, presents a significant challenge due to the complex, mixed degradations they exhibit, such as scratches, color fading, and noise. Recent data-driven…

Computer Vision and Pattern Recognition · Computer Science 2025-05-28 Peng Xiao , Hongbo Zhao , Yijun Wang , Jianxin Lin

Real-world Super-Resolution (Real-SR) methods focus on dealing with diverse real-world images and have attracted increasing attention in recent years. The key idea is to use a complex and high-order degradation model to mimic real-world…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Wenlong Zhang , Xiaohui Li , Xiangyu Chen , Yu Qiao , Xiao-Ming Wu , Chao Dong

Outdoor scene relighting is a challenging problem that requires good understanding of the scene geometry, illumination and albedo. Current techniques are completely supervised, requiring high quality synthetic renderings to train a…

Computer Vision and Pattern Recognition · Computer Science 2021-07-08 Ye Yu , Abhimitra Meka , Mohamed Elgharib , Hans-Peter Seidel , Christian Theobalt , William A. P. Smith

Recovering surface albedos from photogrammetric images for realistic rendering and synthetic environments can greatly facilitate its downstream applications in VR/AR/MR and digital twins. The textured 3D models from standard photogrammetric…

Computer Vision and Pattern Recognition · Computer Science 2022-04-11 Shuang Song , Rongjun Qin