Results 11 to 20 of about 7,830 (229)

Single-shot detection of 8 unique monochrome fringe patterns representing 4 distinct directions via multispectral fringe projection profilometry

open access: yesScientific Reports, 2021
Spatial resolution in three-dimensional fringe projection profilometry is determined in large part by the number and spacing of fringes projected onto an object. Due to the intensity-based nature of fringe projection profilometry, fringe patterns must be
Parsa Omidi   +3 more
doaj   +1 more source

Estimation of biometric, physiological, and nutritional variables in lettuce seedlings using multispectral images

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2021
The formation of seedlings is one of the most important phases of lettuce cultivation. Therefore, any strategy that aims to obtain high-quality seedlings can increase productivity.
George D. Martins   +5 more
doaj   +1 more source

A novel method for the definition of central wavelength and spectral bandwidth

open access: yesResults in Physics, 2020
Spectral calibration is an essential step in the calibration process of multispectral camera for Mars exploration. The precision of spectral calibration has a direct impact on the accuracy of Mars multispectral data inversion.
Hong Wang, Jianfeng Yang, Bin Xue
doaj   +1 more source

Color characterization methods for a multispectral camera [PDF]

open access: yesElectronic Imaging, 2018
With advances in sensor technology, the availability of multispectral cameras and their use are increasing. Having more information compared to a three-channel camera has its advantages but the data must be handled appropriately. In this work, we are interested in multispectral camera characterization. We measure the camera characterization performance
Khan, Haris Ahmad, Green, Phil
openaire   +2 more sources

3D MODELING FOR ROCK ART DOCUMENTATION USING LIGHTWEIGHT MULTISPECTRAL CAMERA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
This paper discusses the use of the lightweight multispectral camera to acquire three-dimensional data for rock art documentation application. The camera consists of five discrete bands, used for taking the motifs of the rock art paintings on a big ...
K. Zainuddin   +6 more
doaj   +1 more source

A single sensor based multispectral imaging camera using a narrow spectral band color mosaic integrated on the monochrome CMOS image sensor

open access: yesAPL Photonics, 2020
A multispectral image camera captures image data within specific wavelength ranges in narrow wavelength bands across the electromagnetic spectrum. Images from a multispectral camera can extract a additional information that the human eye or a normal ...
Xin He   +10 more
doaj   +1 more source

Justifying the Parameters for an Unmanned Aircraft Flight Missions of Multispectral Aerial Photography

open access: yesСельскохозяйственные машины и технологии, 2022
The paper shows the possibility of collecting multispectral and RGB data on the crop condition using an unmanned aircraft. The use of several programs for creating a flight mission is likely to lead to the inefficient use of the unmanned aircraft ...
R. K. Kurbanov, N. I. Zakharova
doaj   +1 more source

Multispectral curved compound eye camera

open access: yesOptics Express, 2020
In this work, we propose a new type of multispectral imaging system, named multispectral curved compound eye camera (MCCEC). The so called MCCEC consists of three subsystems, a curved micro-lens array integrated with selected narrow-band optical filters, an optical transformation subsystem, and the data processing unit with an image sensor.
Xiaodan, Yu   +5 more
openaire   +2 more sources

Deploying four optical UAV-based sensors over grassland: challenges and limitations [PDF]

open access: yesBiogeosciences, 2015
Unmanned aerial vehicles (UAVs) equipped with lightweight spectral sensors facilitate non-destructive, near-real-time vegetation analysis. In order to guarantee robust scientific analysis, data acquisition protocols and processing methodologies need to ...
S. K. von Bueren   +5 more
doaj   +1 more source

Location of Latent Forensic Traces Using Multispectral Bands

open access: yesSensors, 2022
In this paper, a conventional camera modified to capture multispectral images, has been used to locate latent forensic traces with a smart combination of wavelength filters, capturing angle, and illumination sources.
Samuel Miralles-Mosquera   +2 more
doaj   +1 more source

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