Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Van A. Hodgkin"'
Autor:
Christopher L. Howell, Van A. Hodgkin
Publikováno v:
SPIE Proceedings.
In the use of conventional broadband imaging systems, whether reflective or emissive, scene image contrasts are often so low that target discrimination is difficult or uncertain, and it is contrast that drives human-in-the-loop (HIL) sensor range per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07ddffa99f6c78ea17694b8c78e0a602
https://doi.org/10.1117/12.2223004
https://doi.org/10.1117/12.2223004
Autor:
Van A. Hodgkin
Publikováno v:
SPIE Proceedings.
Most mass-produced, commercially available and fielded military reflective imaging systems operate across broad swaths of the visible, near infrared (NIR), and shortwave infrared (SWIR) wavebands without any spectral selectivity within those waveband
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a9edde1282e3ed3f7f3554cdfbb9ef5
https://doi.org/10.1117/12.2176956
https://doi.org/10.1117/12.2176956
Autor:
Kristan P. Gurton, Keith A. Krapels, Van A. Hodgkin, Bradley L. Preece, Roger Thompson, Kevin R. Leonard
Publikováno v:
SPIE Proceedings.
Differential polarimetry has shown the ability to enhance target signatures by reducing background signatures, thus effectively increasing the signal-to-noise ratio on target. This method has mainly been done for resolved, high contrast targets. For
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93298481b1997d89896e834cf2474f8f
https://doi.org/10.1117/12.2054319
https://doi.org/10.1117/12.2054319
Publikováno v:
SPIE Proceedings.
Active imaging systems are currently being developed to increase the target acquisition and identification range performance of electro-optical systems. This paper reports on current efforts to extend the Night Vision Integrated Performance Model (NV
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2fa87fdeb58bcc2141aa992218ae6897
https://doi.org/10.1117/12.2054314
https://doi.org/10.1117/12.2054314
Publikováno v:
SPIE Proceedings.
Polarization filters are commonly used as a means of increasing the contrast of a scene thereby increasing sensor range performance. The change in the signal to noise ratio (SNR) is a function of the polarization of the target and background, the typ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dea278836b5cd47620cc548fa67cf879
https://doi.org/10.1117/12.2052960
https://doi.org/10.1117/12.2052960
Publikováno v:
SPIE Proceedings.
The reflective bands in modern imaging, i.e., the visible through the short wave infrared (SWIR), have become very attractive for use in both daytime and low light target acquisition and surveillance. In addition, the nature of the target in modern c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4260a3b74516e70dbcce5ff7d5d45fb
https://doi.org/10.1117/12.2050328
https://doi.org/10.1117/12.2050328
Publikováno v:
SPIE Proceedings.
This paper is the first of three papers associated with the military benefits of SWIR imaging. This paper describes the benefits associated with passive daytime operations with comparisons of SWIR, NIR, and VIS bands and sensors. This paper includes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acf33fa7bc2623597068b58da3e7d88a
https://doi.org/10.1117/12.2016467
https://doi.org/10.1117/12.2016467
Autor:
Van A. Hodgkin
Publikováno v:
SPIE Proceedings.
In a broadband imaging system, the spectral information from the scene can be as important as the spatial information for the task of discriminating an object or feature of interest (the target) from a backdrop of other objects or features of lesser
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d871daf0dbd0e40030317469b57c48a2
https://doi.org/10.1117/12.2016465
https://doi.org/10.1117/12.2016465
Publikováno v:
SPIE Proceedings.
Pulse and respiration rates provide vital information for evaluating the physiological state of an individual during triage. Traditionally, pulse and respiration have been tracked by means of contact sensors. Recent work has shown that visible camera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bd3941926a5ff8e59910f03d4f1dda9
https://doi.org/10.1117/12.2018334
https://doi.org/10.1117/12.2018334
Publikováno v:
SPIE Proceedings.
The purpose of military camouflage is to make an object hard to see, or to confuse a hostile observer as to its true nature. Perfect camouflage would do this by making itself invisible against its surroundings. Currently, the best camouflage attempts
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::990faef2d27b9aa7711458e8f444b2f3
https://doi.org/10.1117/12.921462
https://doi.org/10.1117/12.921462