Zobrazeno 1 - 10
of 61
pro vyhledávání: '"David W. Tyler"'
Publikováno v:
Applied optics. 57(30)
Registration of multi-spectral imagery is a critical pre-processing step for applications such as image fusion, but phenomenological differences between spectral bands can lead to significant estimation errors. To develop credible requirements for mu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1376f0e87ca67ba91950eed6081b8c2
https://pubmed.ncbi.nlm.nih.gov/30461886
https://pubmed.ncbi.nlm.nih.gov/30461886
Autor:
David W. Tyler
Publikováno v:
Optics Letters. 43:2292
To address the need for the analysis of image processing and optical requirements in multi-mode imaging systems, such as multi-spectral and polarimetric imagers, I have developed a Fisher information matrix to quantify errors in estimating the shift
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f99a7ef88175c89daea989f3ef1bed8
https://doi.org/10.1364/ol.43.002292
https://doi.org/10.1364/ol.43.002292
Publikováno v:
Publications of the Astronomical Society of the Pacific. 119:183-191
We show how the temporal drift of CCD amplifier bias can cause significant relative magnitude estimation error in speckle interferometric observations of multiple-star systems. When amplifier bias varies over time, the estimation error arises if the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2eedf2b6f7f51b2041e61f8af833903
https://doi.org/10.1086/512492
https://doi.org/10.1086/512492
Autor:
David W. Tyler, Kathy J. Schulze
Publikováno v:
Publications of the Astronomical Society of the Pacific. 116:65-76
Adaptive optics image data acquired on large telescopes nearly always need postdetection processing. We have designed a new algorithm for fast phase estimation from the bispectrum. Our innovative "part-bispectrum" approach to phase estimation address
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6270528df567413da938b7fe8c7ba6bb
https://doi.org/10.1086/380765
https://doi.org/10.1086/380765
Autor:
David W. Tyler, Todd C. Torgersen
Publikováno v:
Publications of the Astronomical Society of the Pacific. 114:671-685
We discuss practical problems and solutions associated with the "phase-diverse" speckle (PDS) imaging technique for reconstruction of high-resolution images from ground-based telescope data. The PDS method uses an ensemble of short-exposure images ob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5bf238b824d0b8737e2f9adaca2441d
https://doi.org/10.1086/341694
https://doi.org/10.1086/341694
Autor:
R. Kendrick, Matthew Bold, David W Tyler, Tracy Kubo, James Mason, Robert Shivitz, Kevin R. Bock
Publikováno v:
SPIE Proceedings.
Lockheed Martin has built a Space Object Tracking (SPOT) facility at our Santa Cruz test site in Northern California. SPOT consists of three 1 meter optical telescopes controlled by a common site management system to individually or cooperatively tas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19f0ff30c8c2b45e2b60dc068b34145b
https://doi.org/10.1117/12.2056749
https://doi.org/10.1117/12.2056749
Autor:
Eugene L. Caudill, Marsha J. Fox, Mark A. Von Bokern, David W. Tyler, Charles L. Matson, Michael C. Roggemann
Publikováno v:
Applied optics. 33(14)
Previous analyses have predicted that improved power-spectrum estimation results from application of speckle-imaging postprocessing to compensated astronomical images. We report the first results, to our knowledge, of compensated-speckle-imaging expe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa6fc2f6459dc1c3cda22e6cbc7a7a67
https://pubmed.ncbi.nlm.nih.gov/20885674
https://pubmed.ncbi.nlm.nih.gov/20885674
Autor:
John S. Stryjewski, Miguel Virgen, Jeff A. Dank, David W. Tyler, Alan Tietjen, Jason Mudge, Adam Phenis
Publikováno v:
Polarization Science and Remote Sensing IV.
We present the first high spatial resolution, passively-illuminated polarimetric images of boosting rocket exhaust plumes. The images shown here show significant linear and circular polarization, and the ability to resolve the polarization signals in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9bd5291659019c73a1f45b7198ae6a0
https://doi.org/10.1117/12.828438
https://doi.org/10.1117/12.828438
Autor:
David W. Tyler, Charles L. Matson
Publikováno v:
Optics express. 14(2)
Superresolution by data inversion is the extrapolation of measured Fourier data to regions outside the measurement bandwidth using post processing techniques. Here we characterize superresolution by data inversion for objects with finite support usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f8b4707cfa2a8a71becc223f3ee2e67
https://pubmed.ncbi.nlm.nih.gov/19503361
https://pubmed.ncbi.nlm.nih.gov/19503361
Autor:
David W. Tyler, Eamon B. Barrett
Publikováno v:
Unconventional Imaging IV.
We have developed a computer simulation to demonstrate the use of a periodic grating structure in the near field of a telescope to super-resolve objects in the far field. The separation between the telescope pupil and the grating provides a periodic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4d941aa1cdf8adbe5134c06a538633d
https://doi.org/10.1117/12.796115
https://doi.org/10.1117/12.796115