Results 11 to 20 of about 620,381 (256)

Compensation Method for Shadow Effect of Mine Ultrasonic Anemometer [PDF]

open access: yesIEEE Access, 2021
The ultrasonic anemometer is widely used in the field of wind speed measurement in the coal mine. To compensate for the error of wind speed caused by the shadow effect, we propose a method based on kernel extreme learning machine combined with particle ...
Zhenguan Cao   +4 more
doaj   +3 more sources

Choriocapillaris Dysfunction in Retinal Diseases: Multimodal Imaging Biomarkers, Pathophysiological Insights, and Emerging Clinical Applications [PDF]

open access: yesBiomedicines
The choriocapillaris is the terminal capillary bed that sustains the retinal pigment epithelium (RPE) and the outer retina, and its integrity is inseparable from that of the RPE–Bruch’s membrane complex it supplies.
Feliciana Menna   +5 more
doaj   +2 more sources

Illumination invariance and shadow compensation on hyperspectral images [PDF]

open access: yes, 2014
To obtain intrinsic reflectance of the scene by hyperspectral imaging systems has been a scientific and engineering challenge. Factors such as illumination variations, atmospheric effects and viewing geometries are common artefacts which modulate the way
Ibrahim, Izzati
core   +6 more sources

ANISOTROPIC SCATTERING SHADOW COMPENSATION METHOD FOR REMOTE SENSING IMAGE WITH CONSIDERATION OF TERRAIN [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
With the rapid development of sensor networks and earth observation technology, a large quantity of high resolution remote sensing data is available. However, the influence of shadow has become increasingly greater due to the higher resolution shows more
Q. Wang, L. Yan
doaj   +1 more source

Shadow Compensation from UAV Images Based on Texture-Preserving Local Color Transfer

open access: yesRemote Sensing, 2022
The lack of color information and texture information in the shadow region seriously affect the recognition and interpretation of remote sensing image information. The commonly used methods focus on the restoration of texture information, but it is often
Xiaoxia Liu   +3 more
doaj   +1 more source

A Correction Method of NDVI Topographic Shadow Effect for Rugged Terrain

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
The influence of solar altitude and azimuth angles makes shadows prevalent in remote sensing images of rugged terrains. Consequently, the normalized difference vegetation index (NDVI) of the shadow areas is much lower than that of sunlit areas—a ...
Xu Yang   +5 more
doaj   +1 more source

Improvement of Turbine Inertia Compensation in Wind Turbine Emulators using Kalman Filter [PDF]

open access: yesInternational Journal of Research and Technology in Electrical Industry, 2023
In this paper, a 3.1kW DC motor is used to simulate the static and dynamic behavior of a horizontal axis wind turbine. The effect of the difference between the wind turbine's inertia and DC motor on the dynamic behavior of the system, torque oscillation ...
Mansour Rafiee   +2 more
doaj   +1 more source

Reducing false alarm rates during change detection by modeling relief, shade and shadow of multi-temporal imagery. [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
Change detection on the basis of multi-temporal imagery may lead to false alarms when the image has changed, whereas the scene has not. Geometric image differerences in an unchanged scene may be due to relief displacement, caused by diferent camera ...
B. Gorte, C. van der Sande
doaj   +1 more source

Shadow-Shielding Compensation for Moving Sources Detection

open access: yesIEEE Transactions on Nuclear Science, 2017
To monitor radioactivity emitted by a vehicle such as a pedestrian, a car, a train, or a truck, radiation portal monitors (RPMs) are commonly employed. It has been noted that these RPM suffer from a shadow-shielding effect when the source is transported by a dense and large vehicle such as a truck or a train. While methods using databases are listed as
Coulon, Romain, Dumazert, Jonathan
openaire   +2 more sources

Home - About - Disclaimer - Privacy