Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Sophie Tzimopoulou"'
Publikováno v:
Journal of Modern Optics. 47:931-938
It is known that the distribution of intensity gradients along separate horizontal and vertical directions in an image of a general scene often has a sharp peak with a long tail. This property, can be described by a Lorentzian probability function, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a80f660a5e6f7dbd1205a3b0abfcfa7d
https://doi.org/10.1080/09500340008235101
https://doi.org/10.1080/09500340008235101
Publikováno v:
SPIE Proceedings.
A non-linear image restoration method has been developed by combining the advantages of the existing Lorentzian and Wiener filter techniques. It sharpens edges without introducing Gibbs ringing and restores the background without flattening it. An im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0dea4b2bd736f6118df75a340b3516fd
https://doi.org/10.1117/12.438131
https://doi.org/10.1117/12.438131
Autor:
Alan H. Lettington, Sophie Tzimopoulou
Publikováno v:
Passive Millimeter-Wave Imaging Technology IV.
In this presentation we show how antialiasing can be achieved through image processing. Bandlimited images have their bandwidths extended using non-linear image restoration techniques. In these images the spatial frequencies within the passband are k
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d137db1ccdc75f7b53fd14651076b27
https://doi.org/10.1117/12.391829
https://doi.org/10.1117/12.391829
Publikováno v:
SPIE Proceedings.
This paper discusses methods of improving the quality and resolution of passive mm-wave images, particularly those obtained using the DERA MITRE imager and the more recent MERIT imager. This later real time imager consists of some novel optics follow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15d051659dca3d7fc4245e996ad055e9
https://doi.org/10.1117/12.353001
https://doi.org/10.1117/12.353001
Publikováno v:
SPIE Proceedings.
A super-resolution scheme based on the use of a sampling grating has been proposed to extend the spatial resolution of an IR imager operating in the 8 - 14 micrometer spectral region, where there are at present technological difficulties in manufactu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae2185fb47aafb4d93d4085606d92ebb
https://doi.org/10.1117/12.243499
https://doi.org/10.1117/12.243499
Publikováno v:
Optical Engineering. 40:268
We discuss methods of improving the quality and resolution of passive millimeter-wave images, particularly those obtained using the Defense Evaluation and Research Agency (DERA) MITRE imager and the more recent MERIT imager. This later real time imag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48a51188d2b21f7e4e4ab56647a2207b
https://doi.org/10.1117/1.1339875
https://doi.org/10.1117/1.1339875
Publikováno v:
Electronics Letters. 36:1113
Imagers employing scanned arrays suffer from scan lines generated by the different responses of the individual detector elements. These have been removed by blurring the image at right angles to the direction of scan and fitting the recorded data to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dc608eb84062783519efcb0fe4f62dd
https://doi.org/10.1049/el:20000795
https://doi.org/10.1049/el:20000795
Publikováno v:
Applied Optics. 35:5258
We describe a new scheme for extending the bandwidth of IR detectors by the employment of a reticle that shifts the higher spatial-frequency content of the scene onto the lower-frequency region. Then all the spatial-frequency information can pass thr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74b9def689d4c64f2c41d14b3e51f3fc
https://doi.org/10.1364/ao.35.005258
https://doi.org/10.1364/ao.35.005258
Conference
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Conference
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.