Results 31 to 40 of about 19,217 (260)

Shadow Detection Based on Regions of Light Sources for Object Extraction in Nighttime Video

open access: yesSensors, 2017
Intelligent video surveillance systems detect pre-configured surveillance events through background modeling, foreground and object extraction, object tracking, and event detection.
Gil-beom Lee   +4 more
doaj   +1 more source

Removing Shadows from Images [PDF]

open access: yes, 2002
Illumination conditions cause problems for many computer vision algorithms. In particular, shadows in an image can cause segmentation, tracking, or recognition algorithms to fail. In this paper we propose a method to process a 3-band colour image to locate, and subsequently remove shadows.
Finlayson, Graham D.   +2 more
openaire   +2 more sources

Shadow Removal for Enhanced Nighttime Driving Scene Generation

open access: yesApplied Sciences
Autonomous vehicles depend on robust vision systems capable of performing under diverse lighting conditions, yet existing models often exhibit substantial performance degradation when applied to nighttime scenarios after being trained exclusively on ...
Heejun Yang, Oh-Hyeon Choung, Yuseok Ban
doaj   +1 more source

deSEO: Physics-Aware Dataset Creation for High-Resolution Satellite Image Shadow Removal [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Shadows cast by terrain and tall structures remain a major obstacle for high-resolution satellite image analysis, degrading classification, detection, and 3D reconstruction performance.
L. Beltrame   +9 more
doaj   +1 more source

A Computer Vision Sensor for Efficient Object Detection Under Varying Lighting Conditions

open access: yesAdvanced Intelligent Systems, 2021
Convolutional neural networks (CNNs) have attracted much attention in recent years due to their outstanding performance in image classification. However, changes in lighting conditions can corrupt image segmentation conducted by CNN, leading to false ...
Can Cuhadar   +2 more
doaj   +1 more source

KDE-Based Simultaneous Background Model Learning and Entropy-Based Fusion of Cascaded Features for Video Object Segmentation With Shadow Removal

open access: yesIEEE Access, 2023
Object detection with shadow removal is one of the challenging issues in computer vision. Dynamic shadow resembles a moving object’s properties, so separating this shadow from the object is a challenging task. This dynamic shadow if not eliminated,
Subhaluxmi Sahoo, Pradipta Kumar Nanda
doaj   +1 more source

Shadow removal using sparse representation over local dictionaries

open access: yesEngineering Science and Technology, an International Journal, 2016
The presence of shadow in an image is a major problem associated with various visual processing applications such as object recognition, traffic surveillance and segmentation.
Remya K. Sasi, V.K. Govindan
doaj   +1 more source

Shadow Detection and Removal Using a Hybrid Approach of CTU-Net and Subarea-Based Illumination Compensation

open access: yesIEEE Access
The presence of image shadows significantly impacts the practical applications of computer vision tasks in real-world environments. For example, image recognition, and image segmentation.
Lanfei Zhao, Qiye Wang
doaj   +1 more source

Mitigating Cosmic Microwave Background Shadow Degradation of Tensor-to-scalar Ratio Measurements through Map-based Studies

open access: yesThe Astrophysical Journal Letters, 2023
It has been pointed out that the spurious cosmic microwave background (CMB) B -mode polarization signals caused by the absorption of the CMB monopole component due to the Galactic interstellar matter, called the CMB shadow, degrade the accuracy of ...
Tamaki Murokoshi   +4 more
doaj   +1 more source

Regional Attention For Shadow Removal

open access: yesProceedings of the 32nd ACM International Conference on Multimedia
Shadow, as a natural consequence of light interacting with objects, plays a crucial role in shaping the aesthetics of an image, which however also impairs the content visibility and overall visual quality. Recent shadow removal approaches employ the mechanism of attention, due to its effectiveness, as a key component.
Hengxing Liu   +2 more
openaire   +2 more sources

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