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Despite significant progress in shadow detection, current methods still struggle with the adverse impact of background color, which may lead to errors when shadows are present on complex backgrounds. Drawing inspiration from the human…

计算机视觉与模式识别 · 计算机科学 2024-12-10 Runmin Cong , Yuchen Guan , Jinpeng Chen , Wei Zhang , Yao Zhao , Sam Kwong

In the current computer vision era classifying scenes through video surveillance systems is a crucial task. Artificial Intelligence (AI) Video Surveillance technologies have been advanced remarkably while artificial intelligence and deep…

计算机视觉与模式识别 · 计算机科学 2021-10-18 Md Foysal Haque , Hay-Youn Lim , Dae-Seong Kang

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

Shadow removal is a computer-vision task that aims to restore the image content in shadow regions. While almost all recent shadow-removal methods require shadow-free images for training, in ECCV 2020 Le and Samaras introduces an innovative…

计算机视觉与模式识别 · 计算机科学 2021-03-25 Zhihao Liu , Hui Yin , Xinyi Wu , Zhenyao Wu , Yang Mi , Song Wang

Removing objects from images is a challenging problem that is important for many applications, including mixed reality. For believable results, the shadows that the object casts should also be removed. Current inpainting-based methods only…

计算机视觉与模式识别 · 计算机科学 2020-12-22 Edward Zhang , Ricardo Martin-Brualla , Janne Kontkanen , Brian Curless

Local structures of shadow boundaries as well as complex interactions of image regions remain largely unexploited by previous shadow detection approaches. In this paper, we present a novel learning-based framework for shadow region recovery…

计算机视觉与模式识别 · 计算机科学 2015-05-11 Li Shen , Teck Wee Chua , Karianto Leman

We present Decomposer, a semi-supervised reconstruction model that decomposes distorted image sequences into their fundamental building blocks - the original image and the applied augmentations, i.e., shadow, light, and occlusions. To solve…

计算机视觉与模式识别 · 计算机科学 2023-11-29 Boris Meinardus , Mariusz Trzeciakiewicz , Tim Herzig , Monika Kwiatkowski , Simon Matern , Olaf Hellwich

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,…

计算机视觉与模式识别 · 计算机科学 2024-03-25 Qingyang Liu , Junqi You , Jianting Wang , Xinhao Tao , Bo Zhang , Li Niu

This study aims to optimize the few-shot image classification task and improve the model's feature extraction and classification performance by combining self-supervised learning with the deep network model ResNet-101. During the training…

计算机视觉与模式识别 · 计算机科学 2024-11-20 Yuyang Xiao

Instance shadow detection is a brand new problem, aiming to find shadow instances paired with object instances. To approach it, we first prepare a new dataset called SOBA, named after Shadow-OBject Association, with 3,623 pairs of shadow…

计算机视觉与模式识别 · 计算机科学 2020-06-23 Tianyu Wang , Xiaowei Hu , Qiong Wang , Pheng-Ann Heng , Chi-Wing Fu

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

Shadow detection is commonly formulated as a vision-driven dense prediction problem, where models rely primarily on pixel-wise visual supervision to distinguish shadows from non-shadow regions. However, this formulation can become…

计算机视觉与模式识别 · 计算机科学 2026-05-13 Yonghui Wang , Wengang Zhou , Hao Feng , 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 2021-11-10 Hieu Le , Dimitris Samaras

This paper presents a new method for shadow removal using unpaired data, enabling us to avoid tedious annotations and obtain more diverse training samples. However, directly employing adversarial learning and cycle-consistency constraints…

计算机视觉与模式识别 · 计算机科学 2020-05-19 Xiaowei Hu , Yitong Jiang , Chi-Wing Fu , Pheng-Ann Heng

Illumination effects in images, specifically cast shadows and shading, have been shown to decrease the performance of deep neural networks on a large number of vision-based detection, recognition and segmentation tasks in urban driving…

计算机视觉与模式识别 · 计算机科学 2019-09-27 Alexandra Carlson , Ram Vasudevan , Matthew Johnson-Roberson

Supervised training has led to state-of-the-art results in image and video denoising. However, its application to real data is limited since it requires large datasets of noisy-clean pairs that are difficult to obtain. For this reason,…

图像与视频处理 · 电气工程与系统科学 2022-04-26 Valéry Dewil , Aranud Barral , Gabriele Facciolo , Pablo Arias

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

Shadows can originate from occlusions in both direct and indirect illumination. Although most current shadow removal research focuses on shadows caused by direct illumination, shadows from indirect illumination are often just as pervasive,…

计算机视觉与模式识别 · 计算机科学 2025-02-12 Jiamin Xu , Zelong Li , Yuxin Zheng , Chenyu Huang , Renshu Gu , Weiwei Xu , Gang Xu

The requiring of large amounts of annotated training data has become a common constraint on various deep learning systems. In this paper, we propose a weakly supervised scene text detection method (WeText) that trains robust and accurate…

计算机视觉与模式识别 · 计算机科学 2017-10-16 Shangxuan Tian , Shijian Lu , Chongshou Li

This paper presents a novel semantic scene change detection scheme with only weak supervision. A straightforward approach for this task is to train a semantic change detection network directly from a large-scale dataset in an end-to-end…

计算机视觉与模式识别 · 计算机科学 2022-09-07 Ken Sakurada , Mikiya Shibuya , Weimin Wang