Results 51 to 60 of about 35,629,504 (153)

A Cost‐Efficient and Robust Approach to Monitor Ecosystem Photosynthesis Using Near‐Infrared Enabled Cameras

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.
Abstract Photosynthesis is a fundamental biological process that supports nearly all life on Earth. The tropics contribute the majority of global photosynthesis; however, this region also faces the greatest challenges in monitoring photosynthesis using either ground‐based methods (e.g., logistics in deploying eddy covariance flux towers) or remote ...
Luri Nurlaila Syahid   +6 more
wiley   +1 more source

Source identification for mobile devices, based on wavelet transforms combined with sensor imperfections [PDF]

open access: yes, 2013
One of the most relevant applications of digital image forensics is to accurately identify the device used for taking a given set of images, a problem called source identification.
Hernandez-Castro, Julio C.   +4 more
core   +1 more source

Prediction of LAI in Scots Pine Forests of Türkiye Using UAV and Sentinel 2 Images

open access: yesTransactions in GIS, Volume 30, Issue 3, May 2026.
ABSTRACT Monitoring the structural characteristics of vegetation cover is critical for understanding ecosystem functioning and sustainable forest management. Effective Leaf area index (LAIe) is directly related to photosynthetic capacity, carbon cycle, and water balance of ecosystems.
Hasan Aksoy   +4 more
wiley   +1 more source

NSF NCAR's In Situ Sensing Facility Measurement System During the Sundowner Wind EXperiment (SWEX)

open access: yesGeoscience Data Journal, Volume 13, Issue 2, April 2026.
This paper details the Sundowner Wind Experiment (SWEX) datasets, which characterize downslope winds to advance understanding of boundary layer processes and improve wildfire research and forecasting. The comprehensive, quality‐controlled data from various atmospheric observational platforms will be invaluable for future multidisciplinary research ...
Jacquelyn C. Witte   +9 more
wiley   +1 more source

Camera focusing based on fringe pattern matching [PDF]

open access: yes, 1997
A method of camera focusing based on fringe pattern matching is presented. In the method, the variance of the mismatch function is used as a focus measure.
Bryanston-Cross, P., Wang, Zuobin
core   +1 more source

Durham All-Sky Camera (DAC) [PDF]

open access: yes, 2009
In this work, the prototype of a Durham all-sky camera (DAC) was designed and constructed for the purpose of monitoring the night sky of Durham. The DAC consisted of a Fujinon fish-eye lens coupled to a monochrome 640-by-480-pixel CCD camera (DMK-21BF04 ...
ZHANG, LIN
core  

Color-decoupled photo response non-uniformity for digital image forensics [PDF]

open access: yes, 2012
The last few years have seen the use of photo response non-uniformity noise (PRNU), a unique fingerprint of imaging sensors, in various digital forensic applications such as source device identification, content integrity verification and authentication.
Chang-Tsun Li   +3 more
core   +1 more source

Comparison of optical and digital techniques for light microclimate assessment in the Paneveggio Forest, Trentino, Italy

open access: yesForest@, 2006
Hemispherical photography is a widely used tool for the indirect estimation of forest light environment and quantification of canopy openness, LAI, and direct and diffuse canopy light transmittance.
doaj  

Fuji MX 700 Digital Camera

open access: yes, 2010
Digital camera. Marked (to front): Fujinon lens f = 7.6mm 1:3:2 1.5 mega pixels Digital Camera MX700 Instructions and settings to rear. Silver metal housing. Marked: Fujifilm Digital camera MX700 on base..
The Betty Smithers Design Collection at Staffordshire University   +1 more
core  

A new camera for high-resolution infrared imaging of works of art [PDF]

open access: yes, 2006
A new camera – SIRIS (scanning infrared imaging system) – developed at the National Gallery in London allows high-resolution images to be made in the near infrared region (900–1700 nm).
Saunders, D   +4 more
core  

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