Results 11 to 20 of about 8,432 (118)

Stereo-photometric techniques for scanning micrometer scale

Virtual Archaeology Review, 2015
This paper describes a new methodology based on the combination of photogrammetric and stereo-photometric techniques that allows creating virtual replicas reproducing the relief in micrometric scale, with a geometric resolution until 7 microns. The finest details of the texture obtained by photogrammetric methods are translated to the relief of the ...
Rocio Cachero, Carlota Abello
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A Technique of Wave Measurement using Photometric Stereo

Journal of the Visualization Society of Japan, 1995
It is generally known that there are many methods to measure wave height, but they are measured only at a point. So they demand a lot of labor for measuring in a plane.Therefore in the past several years, our research is development of wave measurement method using image processing. In this paper we suggest the method using Photometric Stereo, and made
SUMINO, Kazuya, SUZUKI, Toshio
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NEW HIGH-z FERMI BL LACS WITH THE PHOTOMETRIC DROPOUT TECHNIQUE [PDF]

The Astrophysical Journal, 2016
ABSTRACT Determining redshifts for BL Lacertae (BL Lac) objects using the traditional spectroscopic method is challenging due to the absence of strong emission lines in their optical spectra. We employ the photometric dropout technique to determine redshifts for this class of blazars using the combined 13 broadband filters from Swift ...
A. Kaur, A. Rau, M. Ajello, J. Greiner, D. H. Hartmann, V. S. Paliya, A. Domínguez, J. Bolmer, P. Schady   +8 more
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Photometric Techniques for Exploring Multiple Populations in Clusters [PDF]

Proceedings of the International Astronomical Union, 2012
AbstractThe advent of the Hubble Space Telescope (HST) and the development of new photometric algorithms that take advantage of its stable observing platform above the atmosphere have allowed us to study the populations in globular clusters with very high precision.
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Photometric Redshift Techniques: Reliability and Applications

, 1998
This article describes the various photometric techniques currently being used, including some preliminary results from the large CNOC2 redshift survey. It also presents a critical look at the reliability of the photometric redshift technique, in part using the HDF results from various groups as a case study.
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A Photometric Technique to Search for Be Stars in Open Clusters

, 2004
We describe a technique to identify Be stars in open clusters using Stromgren b, y, and narrow-band Halpha photometry. We first identify the B-type stars of the cluster using a theoretical isochrone fit to the (b-y, y) color-magnitude diagram. The strongest Be stars are easily identified in a (b-y, y-Halpha) color-color diagram, but those with weaker ...
McSwain, M. Virginia, Gies, Douglas R.
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An Economical Technique for the Estimate of Galaxy Distances: The Photometric Fundamental Plane

The Astronomical Journal, 1997
We show that it is possible to define a purely Photometric Fundamental Plane (PFP) for early-type galaxies. This relation is similar to the standard Fundamental Plane (FP), and is obtained by replacing the velocity dispersion parameter with the difference between the magnitude of a galaxy and that of the mode of the Gaussian luminosity function of E ...
Scodeggio, Marco, Giovanelli, Riccardo, Haynes, Martha   +2 more
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Photometric Observations of Visual Double Stars by the Area Scanning Technique [PDF]

International Astronomical Union Colloquium, 1965
AbstractUBV magnitude differences in visual binaries are presented and their accuracy is discussed. Typical observed image profiles of double stars, including sample profiles of Antares, are shown. This contribution will appear jointly with the earlier one (p. 20) in Lowell Obs. Bull., No. 154. The work has been supported by NSF Grant GP-6983.
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Combining geometric and photometric 3D reconstruction techniques for cultural heritage

Journal of Cultural Heritage
There are mainly two families of photographic 3D reconstruction techniques.Photogrammetry techniques work according to the principle of triangulation, from the matching of dierent views, while photometric techniques link the appearance of a 3D point to the orientation of its normal, relative to that of the incident light. While photogrammetry allows to
Laurent, Antoine, Coupry, Benjamin, Brument, Baptiste, Mélou, Jean, Quéau, Yvain, Fritz, Carole, Durou, Jean-Denis   +6 more
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Euclid: Photometric redshift calibration with the clustering redshifts technique

Aims: The precision of cosmological constraints from imaging surveys hinges on accurately estimating the redshift distribution $ n(z) $ of tomographic bins, especially their mean redshifts. We assess the effectiveness of the clustering redshifts technique in constraining Euclid tomographic redshift bins to meet the target uncertainty of $ σ( \langle z \
Doumerg, W. d'Assignies, Manera, M, Padilla, C, Ilbert, O, Hildebrandt, H, Reynolds, L, Chaves-Montero, J, Wright, A.H, Tallada-Crespí, P, Eriksen, M, Carretero, J, Roster, W, Kang, Y, Naidoo, K, Miquel, R, Altieri, B, Amara, A, Andreon, S, Auricchio, N, Baccigalupi, C, Bagot, D, Baldi, M, Balestra, A, Bardelli, S, Battaglia, P, Biviano, A, Branchini, E, Brescia, M, Camera, S, Capobianco, V, Carbone, C, Cardone, V.F, Casas, S, Castander, F.J, Castellano, M, Castignani, G, Cavuoti, S, Chambers, K.C, Cimatti, A, Colodro-Conde, C, Congedo, G, Conselice, C.J, Conversi, L, Copin, Y, Courbin, F, Courtois, H.M, Crocce, M, da Silva, A, Degaudenzi, H, de la Torre, S, de Lucia, G, Douspis, M, Dupac, X, Ealet, A, Escoffier, S, Farina, M, Faustini, F, Ferriol, S, Finelli, F, Fosalba, P, Fotopoulou, S, Frailis, M, Franceschi, E, Fumana, M, Galeotta, S, George, K, Gillis, B, Giocoli, C, Gómez-Alvarez, P, Gracia-Carpio, J, Grazian, A, Grupp, F, Holmes, W, Hook, I.M, Hornstrup, A, Jahnke, K, Jhabvala, M, Joachimi, B, Keihänen, E, Kermiche, S, Kiessling, A, Kubik, B, Kümmel, M, Kunz, M, Kurki-Suonio, H, Lahav, O, Le Brun, A.M.C, Ligori, S, Lilje, P.B, Lindholm, V, Lloro, I, Mainetti, G, Maino, D, Maiorano, E, Mansutti, O, Marcin, S, Marggraf, O, Markovic, K, Martinelli, M, Martinet, N, Marulli, F, Massey, R, Masters, D.C, Medinaceli, E, Mei, S, Melchior, M, Mellier, Y, Meneghetti, M, Merlin, E, Meylan, G, Mora, A, Moresco, M, Moscardini, L, Neissner, C, Niemi, S.-M, Paltani, S, Pasian, F, Pedersen, K, Pettorino, V, Pires, S, Polenta, G, Poncet, M, Popa, L.A, Pozzetti, L, Raison, F, Rebolo, R, Renzi, A, Rhodes, J, Riccio, G, Romelli, E, Roncarelli, M, Rossetti, E, Saglia, R, Sakr, Z, Sapone, D, Sartoris, B, Schewtschenko, J.A, Schneider, P, Schrabback, T, Secroun, A, Sefusatti, E, Seidel, G, Seiffert, M, Serrano, S, Simon, P, Sirignano, C, Sirri, G, Mancini, A. Spurio, Stanco, L, Steinwagner, J, Tavagnacco, D, Taylor, A.N, Teplitz, H.I, Tereno, I, Tessore, N, Toft, S, Toledo-Moreo, R, Torradeflot, F, Tsyganov, A, Tutusaus, I, Valenziano, L, Valiviita, J, Vassallo, T, Kleijn, G. Verdoes, Wang, Y, Weller, J, Zamorani, G, Zucca, E, Bolzonella, M, Burigana, C, Gabarra, L, Martín-Fleitas, J, Risso, I, Scottez, V, Viel, M   +174 more
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