Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Roy M. Matchko"'
Autor:
Grant R. Gerhart, Roy M. Matchko
This paper focuses on potential false conclusions regarding polarization parameters obtained through the use of a digital camera. It outlines a methodology for calibrating, displaying and visualizing polarization profiles of natural, daylight scenes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3c560eed350f953cf05906789386c73
https://doi.org/10.21236/ada457980
https://doi.org/10.21236/ada457980
Publikováno v:
Targets and Backgrounds: Characterization and Representation IV.
This paper summarizes N.P. Travnikova's model as a method to compare average search times by military observers using powered optics such as binoculars. Both discrete and continuous scanning methods are considered for target searches. This empirical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3255265027676e86f95df6b133e54dc8
https://doi.org/10.1117/12.327152
https://doi.org/10.1117/12.327152
Autor:
Roy M. Matchko, Grant R. Gerhart
Publikováno v:
SPIE Proceedings.
An operational definition of ambient luminance is described in some detail for the time periods near dawn and dusk. A simple empirical model is developed to predict ambient solar luminance under clear sky conditions as a function of (1) observer azim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0d10ad77bb0b1c06b3e54119d4446a5
https://doi.org/10.1117/12.276683
https://doi.org/10.1117/12.276683
Autor:
Roy M. Matchko, Grant R. Gerhart
Publikováno v:
Optical Engineering. 47:016001
The Stokes method provides a seminal method for the determination of the state of polarization of a beam of light using measurable quantities. This paper presents a methodology for the rapid acquisition of the four Stokes parameters. We have been abl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2a0d2088fb427eb6ffaebb4ceedfc45
https://doi.org/10.1117/1.2829767
https://doi.org/10.1117/1.2829767
Autor:
Roy M. Matchko, Grant R. Gerhart
Publikováno v:
Optical Engineering. 45:098002
A motorized rotating retarder, a linear polarizer, and a digital camcorder are used to obtain polarization profiles of natural daylight scenes. A correlation technique synchronizes real-time video frames with respect to the rotating retarder's fast a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60a2fd9a465fd7a3950f7ee12b48f02c
https://doi.org/10.1117/1.2345180
https://doi.org/10.1117/1.2345180
Autor:
Roy M. Matchko, Grant R. Gerhart
Publikováno v:
Optical Engineering. 44:028001
Lord Rayleigh derived the degree of polarization for singular molecular scattering phenomena in the atmosphere as a function of the relative angular orientations of the source, scattering center, and observer. This paper extends the Rayleigh model by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15ded666bbd27085d4d96958e699131d
https://doi.org/10.1117/1.1847656
https://doi.org/10.1117/1.1847656
Autor:
Roy M. Matchko, Grant R. Gerhart
Publikováno v:
Optical Engineering. 44:023604
This paper presents a methodology to obtain polarization profiles using a commercial off-the-shelf (COTS) digital camera. It contains calibration techniques to ensure robust and accurate determination of the Stokes parameters and the system polarizat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c99fd1ecd0299d07dd459bf993e947bd
https://doi.org/10.1117/1.1847655
https://doi.org/10.1117/1.1847655
Autor:
Roy M. Matchko, Grant R. Gerhart
Publikováno v:
Optical Engineering. 40:2735
This paper presents a simple mathematical performance model of the human foveal vision system based on an extensive analysis of the Blackwell-McCready (BM) data set. It includes a closed-form equation, the (ABC)t law, that allows the analyst to predi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f21fa52c2d5f718ace52b626b835b7f
https://doi.org/10.1117/1.1416696
https://doi.org/10.1117/1.1416696
Autor:
Grant R. Gerhart, Roy M. Matchko
Publikováno v:
Optical Engineering. 37:1937
An assessment of human visual performance for detecting low contrast targets is essential in many army target acquisition applications. We examine the comprehensive Blackwell-McCready (BM) contrast threshold data set that was acquired under carefully
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::145da953cd5be95df87d9bdf1f65ff69
https://doi.org/10.1117/1.601724
https://doi.org/10.1117/1.601724
Autor:
Grant R. Gerhart, Roy M. Matchko
Publikováno v:
Optical Engineering. 37:1945
A prediction of human visual target detection performance is important for many military and civilian applications. A previous paper by the authors in this journal develops an extensive numerical hyperbolic curve fitting routine for the Blackwell-McC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3c7f69d9dcea83b3e90e9e910bedd5f
https://doi.org/10.1117/1.601707
https://doi.org/10.1117/1.601707