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This paper proposes a new framework for low-light image enhancement by simultaneously conducting the appearance as well as structure modeling. It employs the structural feature to guide the appearance enhancement, leading to sharp and…

Computer Vision and Pattern Recognition · Computer Science 2023-05-11 Xiaogang Xu , Ruixing Wang , Jiangbo Lu

Recent work indicates that, besides being a challenge in producing perceptually pleasing images, low light proves more difficult for machine cognition than previously thought. In our work, we take a closer look at object detection in low…

Computer Vision and Pattern Recognition · Computer Science 2021-10-22 Igor Morawski , Yu-An Chen , Yu-Sheng Lin , Winston H. Hsu

Accurate and fast extraction of foreground object is a key prerequisite for a wide range of computer vision applications such as object tracking and recognition. Thus, enormous background subtraction methods for foreground object detection…

Computer Vision and Pattern Recognition · Computer Science 2019-05-01 Dongdong Zeng , Ming Zhu , Arjan Kuijper

Instance-level change detection in 3D scenes presents significant challenges, particularly in uncontrolled environments lacking labeled image pairs, consistent camera poses, or uniform lighting conditions. This paper addresses these…

Computer Vision and Pattern Recognition · Computer Science 2025-02-25 Binbin Jiang , Rui Huang , Qingyi Zhao , Yuxiang Zhang

In general, background subtraction-based methods are used to detect moving objects in visual tracking applications. In this paper, we employed a background subtraction-based scheme to detect the temporarily stationary objects. We proposed…

Computer Vision and Pattern Recognition · Computer Science 2025-06-18 Deepak Ghimire , Joonwhoan Lee

Moving object detection (MOD) is a significant problem in computer vision that has many real world applications. Different categories of methods have been proposed to solve MOD. One of the challenges is to separate moving objects from…

Computer Vision and Pattern Recognition · Computer Science 2018-08-06 Fateme Bahri , Moein Shakeri , Nilanjan Ray

Recovering shadows is an important step for many vision algorithms. Current approaches that work with time-lapse sequences are limited to simple thresholding heuristics. We show these approaches only work with very careful tuning of…

Computer Vision and Pattern Recognition · Computer Science 2013-04-16 Austin Abrams , Chris Hawley , Kylia Miskell , Adina Stoica , Nathan Jacobs , Robert Pless

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…

Computer Vision and Pattern Recognition · Computer Science 2020-05-15 Xiaowei Hu , Chi-Wing Fu , Lei Zhu , Jing Qin , Pheng-Ann Heng

Video shadow detection aims to generate consistent shadow predictions among video frames. However, the current approaches suffer from inconsistent shadow predictions across frames, especially when the illumination and background textures…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 Xinpeng Ding , Jingweng Yang , Xiaowei Hu , Xiaomeng Li

Real-time motion detection in non-stationary scenes is a difficult task due to dynamic background, changing foreground appearance and limited computational resource. These challenges degrade the performance of the existing methods in…

Computer Vision and Pattern Recognition · Computer Science 2018-11-22 Junjie Huang , Wei Zou , Zheng Zhu , Jiagang Zhu

Large sky surveys are increasingly relying on image subtraction pipelines for real-time (and archival) transient detection. In this process one has to contend with varying PSF, small brightness variations in many sources, as well as…

Instrumentation and Methods for Astrophysics · Physics 2018-04-25 Nima Sedaghat , Ashish Mahabal

3D reconstruction is a fundamental problem in computer vision, and the task is especially challenging when the object to reconstruct is partially or fully occluded. We introduce a method that uses the shadows cast by an unobserved object in…

Computer Vision and Pattern Recognition · Computer Science 2022-06-22 Ruoshi Liu , Sachit Menon , Chengzhi Mao , Dennis Park , Simon Stent , Carl Vondrick

We present a novel method for scene change detection that leverages the robust feature extraction capabilities of a visual foundational model, DINOv2, and integrates full-image cross-attention to address key challenges such as varying…

Computer Vision and Pattern Recognition · Computer Science 2025-03-05 Chun-Jung Lin , Sourav Garg , Tat-Jun Chin , Feras Dayoub

Generating realistic cast shadows for inserted foreground objects is a crucial yet challenging problem in image composition, where maintaining geometric consistency of shadow and object in complex scenes remains difficult due to the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Jing Li , Jing Zhang

Accurate detection of individual tree crowns from remote sensing data poses a significant challenge due to the dense nature of forest canopy and the presence of diverse environmental variations, e.g., overlapping canopies, occlusions, and…

Computer Vision and Pattern Recognition · Computer Science 2023-10-26 Rudraksh Kapil , Seyed Mojtaba Marvasti-Zadeh , Nadir Erbilgin , Nilanjan Ray

Remote sensing shadow removal, which aims to recover contaminated surface information, is tricky since shadows typically display overwhelmingly low illumination intensities. In contrast, the infrared image is robust toward significant light…

Computer Vision and Pattern Recognition · Computer Science 2024-06-26 Kaichen Chi , Wei Jing , Junjie Li , Qiang Li , Qi Wang

Instance segmentation is an important problem in computer vision, with applications in autonomous driving, drone navigation and robotic manipulation. However, most existing methods are not real-time, complicating their deployment in…

Computer Vision and Pattern Recognition · Computer Science 2019-07-31 Laurynas Miksys , Saumya Jetley , Michael Sapienza , Stuart Golodetz , Philip H. S. Torr

The recent trend in multiple object tracking (MOT) is heading towards leveraging deep learning to boost the tracking performance. In this paper, we propose a novel solution named TransSTAM, which leverages Transformer to effectively model…

Computer Vision and Pattern Recognition · Computer Science 2022-06-01 Peng Dai , Yiqiang Feng , Renliang Weng , Changshui Zhang

Object Detection is the task of identifying the existence of an object class instance and locating it within an image. Difficulties in handling high intra-class variations constitute major obstacles to achieving high performance on standard…

Computer Vision and Pattern Recognition · Computer Science 2012-12-04 Osama Khalil , Andrew Habib

Existing face relighting methods often struggle with two problems: maintaining the local facial details of the subject and accurately removing and synthesizing shadows in the relit image, especially hard shadows. We propose a novel deep…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Andrew Hou , Ze Zhang , Michel Sarkis , Ning Bi , Yiying Tong , Xiaoming Liu