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Effective shadow removal is pivotal in enhancing the visual quality of images in various applications, ranging from computer vision to digital photography. During the last decades physics and machine learning -based methodologies have been…

计算机视觉与模式识别 · 计算机科学 2024-10-23 Eirini Cholopoulou , Dimitrios E. Diamantis , Dimitra-Christina C. Koutsiou , Dimitris K. Iakovidis

Shadows often create unwanted artifacts in photographs, and removing them can be very challenging. Previous shadow removal methods often produce de-shadowed regions that are visually inconsistent with the rest of the image. In this work we…

计算机视觉与模式识别 · 计算机科学 2016-03-22 Liqian Ma , Jue Wang , Eli Shechtman , Kalyan Sunkavalli , Shimin Hu

Night time semantic segmentation is a crucial task in computer vision, focusing on accurately classifying and segmenting objects in low-light conditions. Unlike daytime techniques, which often perform worse in nighttime scenes, it is…

计算机视觉与模式识别 · 计算机科学 2024-07-09 Sarah Elmahdy , Rodaina Hebishy , Ali Hamdi

Removing shadows requires an understanding of both lighting conditions and object textures in a scene. Existing methods typically learn pixel-level color mappings between shadow and non-shadow images, in which the joint modeling of lighting…

计算机视觉与模式识别 · 计算机科学 2024-02-02 Yuhao Liu , Zhanghan Ke , Ke Xu , Fang Liu , Zhenwei Wang , Rynson W. H. Lau

We propose a novel deep learning method for shadow removal. Inspired by physical models of shadow formation, we use a linear illumination transformation to model the shadow effects in the image that allows the shadow image to be expressed…

计算机视觉与模式识别 · 计算机科学 2021-11-10 Hieu Le , Dimitris Samaras

Divide and conquer is an established algorithm design paradigm that has proven itself to solve a variety of problems efficiently. However, it is yet to be fully explored in solving problems with a neural network, particularly the problem of…

图像与视频处理 · 电气工程与系统科学 2020-10-08 Vikram Singh , Anurag Mittal

Shadow detection is a fundamental and challenging task in many computer vision applications. Intuitively, most shadows come from the occlusion of light by the object itself, resulting in the object and its shadow being contiguous (referred…

计算机视觉与模式识别 · 计算机科学 2024-08-08 Yonghui Wang , Shaokai Liu , Li Li , Wengang Zhou , Houqiang Li

We propose a novel deep learning method for shadow removal. Inspired by physical models of shadow formation, we use a linear illumination transformation to model the shadow effects in the image that allows the shadow image to be expressed…

计算机视觉与模式识别 · 计算机科学 2019-08-26 Hieu Le , Dimitris Samaras

Existing research based on deep learning has extensively explored the problem of daytime image dehazing. However, few studies have considered the characteristics of nighttime hazy scenes. There are two distinctions between nighttime and…

计算机视觉与模式识别 · 计算机科学 2024-03-28 Xiaofeng Cong , Jie Gui , Jing Zhang , Junming Hou , Hao Shen

Image deraining is a fundamental, yet not well-solved problem in computer vision and graphics. The traditional image deraining approaches commonly behave ineffectively in medium and heavy rain removal, while the learning-based ones lead to…

图像与视频处理 · 电气工程与系统科学 2019-08-29 Sen Deng , Mingqiang Wei , Jun Wang , Luming Liang , Haoran Xie , Meng Wang

Content generation and manipulation approaches based on deep learning methods have seen significant advancements, leading to an increased need for techniques to detect whether an image has been generated or edited. Another area of research…

计算机视觉与模式识别 · 计算机科学 2025-01-20 Philip Wootaek Shin , Jack Sampson , Vijaykrishnan Narayanan , Andres Marquez , Mahantesh Halappanavar

The key to shadow removal is recovering the contents of the shadow regions with the guidance of the non-shadow regions. Due to the inadequate long-range modeling, the CNN-based approaches cannot thoroughly investigate the information from…

计算机视觉与模式识别 · 计算机科学 2022-09-07 Qianhao Yu , Naishan Zheng , Jie Huang , Feng Zhao

Current shadow detection methods perform poorly when detecting shadow regions that are small, unclear or have blurry edges. In this work, we attempt to address this problem on two fronts. First, we propose a Fine Context-aware Shadow…

计算机视觉与模式识别 · 计算机科学 2021-11-30 Jeya Maria Jose Valanarasu , Vishal M. Patel

Shadow boundaries can be confused with material boundaries as both exhibit sharp changes in luminance or contrast within a scene. However, shadows do not modify the intrinsic color or texture of surfaces. Therefore, on both sides of shadow…

计算机视觉与模式识别 · 计算机科学 2024-09-12 Shilin Hu , Hieu Le , ShahRukh Athar , Sagnik Das , Dimitris Samaras

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…

计算机视觉与模式识别 · 计算机科学 2018-07-31 Sai Bi , Nima Khademi Kalantari , Ravi Ramamoorthi

Shadow detection and shadow removal are fundamental and challenging tasks, requiring an understanding of the global image semantics. This paper presents a novel deep neural network design for shadow detection and removal by analyzing the…

计算机视觉与模式识别 · 计算机科学 2020-05-15 Xiaowei Hu , Chi-Wing Fu , Lei Zhu , Jing Qin , Pheng-Ann Heng

Degradation of image quality due to the presence of haze is a very common phenomenon. Existing DehazeNet [3], MSCNN [11] tackled the drawbacks of hand crafted haze relevant features. However, these methods have the problem of color…

计算机视觉与模式识别 · 计算机科学 2018-01-26 Akshay Dudhane , Subrahmanyam Murala

Low-light image enhancement tasks demand an appropriate balance among brightness, color, and illumination. While existing methods often focus on one aspect of the image without considering how to pay attention to this balance, which will…

计算机视觉与模式识别 · 计算机科学 2023-10-20 Nana Yu , Hong Shi , Yahong Han

Existing deep learning-based shadow removal methods still produce images with shadow remnants. These shadow remnants typically exist in homogeneous regions with low-intensity values, making them untraceable in the existing image-to-image…

计算机视觉与模式识别 · 计算机科学 2024-02-02 Yuhao Liu , Qing Guo , Lan Fu , Zhanghan Ke , Ke Xu , Wei Feng , Ivor W. Tsang , Rynson W. H. Lau

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