Results 11 to 20 of about 2,720 (195)

Document Image Processing

open access: yesJournal of Imaging, 2018
n ...
Laurence Likforman-Sulem   +1 more
doaj   +1 more source

Limb–nadir matching using non-coincident NO2 observations: proof of concept and the OMI-minus-OSIRIS prototype product [PDF]

open access: yesAtmospheric Measurement Techniques, 2016
A variant of the limb–nadir matching technique for deriving tropospheric NO2 columns is presented in which the stratospheric component of the NO2 slant column density (SCD) measured by the Ozone Monitoring Instrument (OMI) is removed using non-coincident
C. Adams   +9 more
doaj   +1 more source

CO-REGISTRATION OF TERRESTRIAL AND UAV-BASED IMAGES – EXPERIMENTAL RESULTS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
For many applications within urban environments the combined use of images taken from the ground and from unmanned aerial platforms seems interesting: while from the airborne perspective the upper parts of objects including roofs can be observed, the ...
M. Gerke, F. Nex, P. Jende
doaj   +1 more source

NDACC/SAOZ UV-visible total ozone measurements: improved retrieval and comparison with correlative ground-based and satellite observations [PDF]

open access: yesAtmospheric Chemistry and Physics, 2011
Accurate long-term monitoring of total ozone is one of the most important requirements for identifying possible natural or anthropogenic changes in the composition of the stratosphere. For this purpose, the NDACC (Network for the Detection of Atmospheric
F. Hendrick   +11 more
doaj   +1 more source

Abstract 3-Rigidity and Bivariate $C_2^1$-Splines I: Whiteley's Maximality Conjecture

open access: yesDiscrete Analysis, 2022
3-Rigidity and Bivariate $C_2^1$-Splines I: Whiteley's Maximality Conjecture, Discrete Analysis 2022:2, 50 pp. Suppose one realizes a graph $G$ by taking its vertex set to be a set of points $x_1,\dots,x_n$ in $\mathbb R^d$ and the edge joining $x_i$ to
Katie Clinch   +2 more
doaj   +1 more source

WATERSHED ALGORITHM BASED SEGMENTATION FOR HANDWRITTEN TEXT IDENTIFICATION [PDF]

open access: yesICTACT Journal on Image and Video Processing, 2014
In this paper we develop a system for writer identification which involves four processing steps like preprocessing, segmentation, feature extraction and writer identification using neural network.
P. Mathivanan   +2 more
doaj  

Multi-wavelength dataset of aerosol extinction profiles retrieved from GOMOS stellar occultation measurements [PDF]

open access: yesAtmospheric Measurement Techniques
In this paper, we present the new multi-wavelength dataset of aerosol extinction profiles, which are retrieved from the averaged transmittance spectra by the Global Ozone Monitoring by Occultation of Stars instrument aboard the Envisat satellite ...
V. F. Sofieva   +8 more
doaj   +1 more source

The Role of Vertical Disparity in Distance and Depth Perception as Revealed by Different Stereo-Camera Configurations

open access: yesi-Perception, 2016
Vertical binocular disparity is a source of distance information allowing the portrayal of the layout and 3D metrics of the visual space. The role of vertical disparity in the perception of depth, size, curvature, or slant of surfaces was revealed in ...
Cyril Vienne   +3 more
doaj   +1 more source

Therapeutic Apheresis in Nigeria: A Multi‐Center Summary of Abstracts From the Inaugural Nigerian Society for Apheresis Scientific Meeting

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Therapeutic apheresis (TA) is an established treatment modality for hematologic, neurologic, and immunologic disorders, yet access remains severely limited in sub‐Saharan Africa. Donor apheresis, including platelet apheresis collection from healthy donors, represents an important complementary modality supporting blood product ...
Nosa Bazuaye   +33 more
wiley   +1 more source

Tamper detection, localization and self-recovery using slant transform with DNA encoding for medical images

open access: yesResults in Engineering
This work proposes an improved self-embedding semi-fragile watermarking scheme for a smart healthcare system using telemedicine. The watermark is produced by encoding the Slant Transform (ST) coefficients of each block of the host image.
Samudrala Jagadeesh   +2 more
doaj   +1 more source

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