Results 21 to 30 of about 378,062 (357)

Deep Feature Learning for Intrinsic Signature Based Camera Discrimination

open access: yesBig Data Mining and Analytics, 2022
In this paper we consider the problem of "end-to-end" digital camera identification by considering sequence of images obtained from the cameras. The problem of digital camera identification is harder than the problem of identifying its analog counterpart
Chaity Banerjee   +3 more
doaj   +1 more source

Urban Feature Extraction from Merged Airborne LiDAR Data and Digital Camera Data

open access: yesGeoplanning: Journal of Geomatics and Planning, 2020
Until recently, the most highly accurate digital surface models were obtained from airborne lidar. With the development of a new generation of large format digital photogrammetric aerial camera, a fully digital photogrammetric workflow became possible ...
Lamyaa Gamal EL-Deen Taha   +3 more
doaj   +1 more source

Optics and Utility of Low-Cost Smartphone-Based Portable Digital Fundus Camera System for Screening of Retinal Diseases

open access: yesDiagnostics, 2022
Purpose: To describe optical principles and utility of inexpensive, portable, non-contact digital smartphone-based camera for the acquisition of fundus photographs for the evaluation of retinal disorders.
K. V. Chalam   +2 more
doaj   +1 more source

Identifying the Digital Camera from Natural Images Using Residual Noise and the Jensen–Shannon Divergence

open access: yesJournal of Electrical and Computer Engineering, 2022
Regarding the problem of digital camera identification, many methods have been proposed, and for several of them, their effectiveness has been verified on the basis of disputed flat images.
Francisco Rodríguez-Santos   +5 more
doaj   +1 more source

Experimental demonstration of RGB LED-based optical camera communications [PDF]

open access: yes, 2015
Red, green, and blue (RGB) light-emitting diodes (LEDs) are widely used in everyday illumination, particularly where color-changing lighting is required.
Ghassemlooy, Zabih   +7 more
core   +1 more source

Using Imaging Techniques to Analyze the Microstructure of Asphalt Concrete Mixtures: Literature Review

open access: yesApplied Sciences, 2023
The performance of asphalt concrete (AC) mixtures depends highly on their internal structure and the interaction of the mixture components under different loading conditions.
Mai Alawneh, Haithem Soliman
doaj   +1 more source

RESEARCH OF DIGITAL CAMERA DYNAMIC RANGE ON THE IMAGING PROCESSING BASIS

open access: yesПриборы и методы измерений, 2017
Digital images provide to determine photometric and colorimetric properties of objects subject to validation all elements of a measuring channel (digital camera, software, display) and solve the problem of their limited dynamic ranges.
M Sutkowski, Ya. N. Saukova
doaj   +1 more source

Assessment of Temperature Effects in Interior Orientation Parameters Calibration of Optoelectronic Devices

open access: yesПриборы и методы измерений, 2020
A digital micromirror device (DMD) micromirrors periodic spatial structure is a measuring scale in interior orientation parameters calibration of optoelectronic devices problems, when using a DMD as a testobject.
M. A. Starasotnikau
doaj   +1 more source

THE DIGITAL CAMERA AS A GPS COMPASS: LOCATION MATCHING USING POINT CLOUDS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
We focus on the potential of a camera to act as a location sensor, assisting other location sensors to improve positioning accuracy. A camera is installed in almost all mobile devices.
M. Nakagawa   +5 more
doaj   +1 more source

Novel interfaces for digital cameras and camera phones [PDF]

open access: yesProceedings of the 12th international conference on Human computer interaction with mobile devices and services, 2010
Camera phones are now very common but there are some usability issues that affect their use. These can occur because the users look through the LCD to frame the image and can often miss the icons displayed around the edges that present important information about the status of the camera. This may lead to shots being missed or poorly exposed.
Christopher McAdam   +2 more
openaire   +1 more source

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