Results 21 to 30 of about 620,381 (256)

Extended State Observer-Based Nonlinear Terminal Sliding Mode Control With Feedforward Compensation for Lower Extremity Exoskeleton

open access: yesIEEE Access, 2022
This paper presents and experimentally demonstrates an extended state observer (ESO) -based nonlinear terminal sliding mode control strategy with feedforward compensation (ESO-F-NTSMC) for lower extremity exoskeleton.
Yi Long, Yajun Peng
doaj   +1 more source

Automated retinal shadow compensation of optical coherence tomography images [PDF]

open access: yesJournal of Biomedical Optics, 2009
We present an automated numerical method of compensating for retinal shadows in the choroid. In this method, signal extinction caused by retinal vessels is estimated by subtracting median A-scans obtained from beneath the retinal vessels and A-scans from the surrounding area. Adding the obtained offset vector to A-scans from beneath the retinal vessels
Tapio Fabritius   +4 more
openaire   +2 more sources

Four fifty-seven focus; Ohio Deferred Compensation 457 focus; Ohio Deferred Compensation four fifty-seven focus; Participant Focus newsletter

open access: yes, 2010
2010, 1st quarter-; Description based on: 1st quarter 2010; title from PDF caption (viewed on Dec. 7, 2010).; At head of title: Ohio Deferred Compensation.; "A publication of the Ohio Deferred Compensation Board."; Harvested from the web on 12/9 ...

core   +4 more sources

Photosynthesis and respiration of plants from the Gulf of Gdańsk [PDF]

open access: yesActa Ichthyologica et Piscatoria, 1991
Photosynthesis-light intensity relationship in nanoplankton, net plankton, and bentic plants from the Gulf of Gdańsk were determined and the relevant curves plotted.
A. Latała
doaj   +3 more sources

Image Segmentation of UAV Fruit Tree Canopy in a Natural Illumination Environment

open access: yesAgriculture, 2022
Obtaining canopy area, crown width, position, and other information from UAV aerial images and adjusting spray parameters in real-time according to this information is an important way to achieve precise pesticide application in orchards.
Zhongao Lu   +4 more
doaj   +1 more source

Enhanced Indoor Location Tracking Through Body Shadowing Compensation [PDF]

open access: yesIEEE Sensors Journal, 2016
This paper presents a radio frequency (RF)-based location tracking system that improves its performance by eliminating the shadowing caused by the human body of the user being tracked. The presence of such a user will influence the RF signal paths between a body-worn node and the receiving nodes.
Trogh, Jens   +4 more
openaire   +2 more sources

An in-depth analysis of hyperspectral target detection with shadow compensation via LiDAR

open access: yesSignal Processing: Image Communication, 2021
Abstract Shadowy areas present a big hindrance in target detection from HSI, as the reflectance data received from target materials is significantly diminished when measured from shadowy areas. In this work, we perform an in-depth analysis of hyperspectral target detection on targets in full illumination and in partial or full shadows; and analyze ...
Emrah Oduncu, Seniha Esen Yüksel
openaire   +3 more sources

A Review on Various Shadow Detection and Compensation Techniques in Remote Sensing Images

open access: yesCanadian Journal of Remote Sensing, 2017
Remote sensing images provide a valuable source of information about the earth's surface. The presence of shadow can reduce the amount of information that can be extracted from these images.
Yasser Mostafa
doaj   +1 more source

Airborne InSAR Interferometric Phase Analysis, Unwrapping Method, and Fast Implementation in Low Coherence Areas

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Due to synthetic aperture radar (SAR) imaging geometry and scattering characteristics, there are some low coherence areas in interferometric SAR (InSAR) data, such as shadow and water, where the interferometric phase is discontinuous.
Fangfang Li   +3 more
doaj   +1 more source

Shadow Compensation on Aerial Images

open access: yes, 2022
Shadow removal process includes locating the shadow regions (shadow detection) and eliminating the effect of shadows (shadow compensation).
Mohd Isa, Wan Noorshahida   +2 more
core   +1 more source

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