Results 21 to 30 of about 12,661 (221)

Building Footprints Extraction from Oblique Imagery [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Nowadays, multi-camera aerial platforms combining nadir and oblique cameras are experiencing a revival and several companies have proposed new image acquisition systems.
F. Nex, E. Rupnik, F. Remondino
doaj   +1 more source

Take Only Photographs, Leave Only Footprints: Novel Applications of Non-Invasive Survey Methods for Rapid Detection of Small, Arboreal Animals. [PDF]

open access: yesPLoS ONE, 2016
The development of appropriate wildlife survey techniques is essential to promote effective and efficient monitoring of species of conservation concern. Here, we demonstrate the utility of two rapid-assessment, non-invasive methods to detect the presence
Cheryl A Mills   +2 more
doaj   +1 more source

STRUCTURELESS BUNDLE ADJUSTMENT WITH SELF-CALIBRATION USING ACCUMULATED CONSTRAINTS [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Bundle adjustment based on collinearity is the most widely used optimization method within image based scene reconstruction. It incorporates observed image coordinates, exterior and intrinsic camera parameters as well as object space coordinates of the ...
A. Cefalu, N. Haala, D. Fritsch
doaj   +1 more source

Visual Area Coverage with Attitude-Dependent Camera Footprints by Particle Harvesting

open access: yesCoRR, 2019
In aerial visual area coverage missions, the camera footprint changes over time based on the camera position and orientation -- a fact that complicates the whole process of coverage and path planning. This article proposes a solution to the problem of visual coverage by filling the target area with a set of randomly distributed particles and harvesting
Sina Sharif Mansouri   +4 more
openaire   +2 more sources

Monitoring System for Leucoptera malifoliella (O. Costa, 1836) and Its Damage Based on Artificial Neural Networks

open access: yesAgriculture, 2022
The pear leaf blister moth is a significant pest in apple orchards. It causes damage to apple leaves by forming circular mines. Its control depends on monitoring two events: the flight of the first generation and the development of mines up to 2 mm in ...
Dana Čirjak   +8 more
doaj   +1 more source

Low Computational-Cost Footprint Deformities Diagnosis Sensor through Angles, Dimensions Analysis and Image Processing Techniques

open access: yesSensors, 2017
Manual measurements of foot anthropometry can lead to errors since this task involves the experience of the specialist who performs them, resulting in different subjective measures from the same footprint.
J. Rodolfo Maestre-Rendon   +6 more
doaj   +1 more source

MEMS enabled miniaturized light-sheet microscopy with all optical control

open access: yesScientific Reports, 2021
We have designed and implemented a compact, cost-efficient miniaturised light-sheet microscopy system based on optical microelectromechanical systems scanners and tunable lenses.
Spyridon Bakas   +3 more
doaj   +1 more source

FloorVLoc: A Modular Approach to Floorplan Monocular Localization

open access: yesRobotics, 2020
Intelligent vehicles for search and rescue, whose mission is assisting emergency personnel by visually exploring an unfamiliar building, require accurate localization.
John Noonan   +2 more
doaj   +1 more source

Inter-Comparison of Normalized Difference Vegetation Index Measured from Different Footprint Sizes in Cropland

open access: yesRemote Sensing, 2020
Remote sensing techniques using visible and near-infrared wavelengths are useful for monitoring terrestrial vegetation. The normalized difference vegetation index (NDVI) is a widely used proxy of vegetation conditions, and it has been measured at various
Jae-Hyun Ryu, Sang-Il Na, Jaeil Cho
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

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