Results 71 to 80 of about 586,449 (202)

Master slave en-face OCT/SLO [PDF]

open access: yes, 2015
Master Slave optical coherence tomography (MS-OCT) is an OCT method that does not require resampling of data and can be used to deliver en-face images from several depths simultaneously.
Biedermann   +37 more
core   +1 more source

Optical Tracking Velocimetry (OTV): Leveraging Optical Flow and Trajectory-Based Filtering for Surface Streamflow Observations

open access: yesRemote Sensing, 2018
Nonintrusive image-based methods have the potential to advance hydrological streamflow observations by providing spatially distributed data at high temporal resolution.
Flavia Tauro   +5 more
doaj   +1 more source

What Fraction of the Young Clusters in the Antennae Galaxies are "Missing"? [PDF]

open access: yes, 2002
A reexamination of the correspondence between 6 cm radio continuum sources and young star clusters in the Antennae galaxies indicates that 85 % of the strong thermal sources have optical counterparts, once the optical image is shifted 1.2 arcsec to the ...
Biretta J.   +5 more
core   +2 more sources

An optical processor for object recognition and tracking [PDF]

open access: yes
The design and development of a miniaturized optical processor that performs real time image correlation are described. The optical correlator utilizes the Vander Lugt matched spatial filter technique.
Sloan, J., Udomkesmalee, S.
core   +1 more source

Biometric Image Recognition Based on Optical Correlator

open access: yesAdvances in Electrical and Electronic Engineering, 2017
The aim of this paper is to design a biometric images recognition system able to recognize biometric images-eye and DNA marker. The input scenes are processed by user-friendly software created in C# programming language and then are compared with reference images stored in database.
David Solus   +5 more
openaire   +2 more sources

Optimal Filter Estimation for Lucas-Kanade Optical Flow

open access: yesSensors, 2012
Optical flow algorithms offer a way to estimate motion from a sequence of images. The computation of optical flow plays a key-role in several computer vision applications, including motion detection and segmentation, frame interpolation, three ...
Remus Brad, Nusrat Sharmin
doaj   +1 more source

A Multi-User Encryption and Authentication System Based on Joint Transform Correlation

open access: yesEntropy, 2019
Optical image encryption technology based on joint transform correlation (JTC) has attracted increasing attention from researchers. We propose a multi-user secure communication system based on the special properties of JTC.
Tieyu Zhao, Yingying Chi
doaj   +1 more source

A Scale-Adaptive Matching Algorithm for Underwater Acoustic and Optical Images

open access: yesSensors, 2020
Underwater acoustic and optical data fusion has been developed in recent decades. Matching of underwater acoustic and optical images is a fundamental and critical problem in underwater exploration because it usually acts as the key step in many ...
Jun Liu   +5 more
doaj   +1 more source

Jet emission in NGC1052 at radio, optical, and X-ray frequencies

open access: yes, 2004
We present a combined radio, optical, and X-ray study of the nearby LINER galaxy NGC 1052. Data from a short (2.3 ksec) {\it CHANDRA} observation of NGC 1052 reveal the presence of various jet-related X-ray emitting regions, a bright compact core and ...
Allen   +28 more
core   +1 more source

Programmable image associative memory using an optical disk and a photorefractive crystal [PDF]

open access: yes, 1993
The optical disk is a computer-addressable binary storage medium with very high capacity. More than 10^10 bits of information can be recorded on a 12-cm-diameter optical disk.
Neifeld, Mark A., Psaltis, Demetri
core  

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