| Records |
| Author |
Susana Alvarez; Xavier Otazu; Maria Vanrell |
| Title |
Image Segmentation Based on Inter-Feature Distance Maps |
Type |
Book Chapter |
| Year |
2005 |
Publication |
Frontiers in Artificial Intelligence and Applications, IOS Press, 131: 75–82 |
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no |
| Call Number |
CAT @ cat @ AOV2005 |
Serial |
569 |
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| Author |
A. Richichi; O. Fors; M.T. Merino; Xavier Otazu; J. Nuñez; A. Prades; U. Thiele; D. Perez-Ramirez; F.J. Montojo |
| Title |
The Calar Alto lunar occultation program: update and new results |
Type |
Journal |
| Year |
2006 |
Publication |
Astronomy and Astrophysics (Section ’Stellar structure and evolution’), 445:1081–1088 |
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no |
| Call Number |
CAT @ cat @ RFM2006a |
Serial |
589 |
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| Author |
Robert Benavente; Maria Vanrell; Ramon Baldrich |
| Title |
A data set for fuzzy colour naming |
Type |
Journal |
| Year |
2006 |
Publication |
Color Research & Application, 31(1):48–56 |
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no |
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CAT @ cat @ BVB2006 |
Serial |
590 |
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| Author |
Fernando Lopez; J.M. Valiente; Ramon Baldrich; Maria Vanrell |
| Title |
Fast surface grading using color statistics in the CIELab space |
Type |
Conference Article |
| Year |
2005 |
Publication |
Pattern Recognition and Image Analysis. IbPRIA 2005 |
Abbreviated Journal |
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| Volume |
LNCS 3523 |
Issue |
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Pages |
66-673 |
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| Address |
Germany |
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LNCS |
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IbPRIA |
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CIC |
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no |
| Call Number |
CAT @ cat @ LVB2005 |
Serial |
641 |
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| Author |
J. Nuñez; Xavier Otazu; M.T. Merino |
| Title |
A Multiresolution-Based Method for the Determination of the Relative Resolution between Images. First Application to Remote Sensing and Medical Images |
Type |
Journal |
| Year |
2005 |
Publication |
International Journal of Imaging Systems and Technology, 15(5): 225–235 (IF: 0.439) |
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CIC |
Approved |
no |
| Call Number |
CAT @ cat @ NOM2005 |
Serial |
645 |
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| Author |
Xavier Otazu; Maria Vanrell |
| Title |
Several lightness induction effects with a computational multiresolution wavelet framework |
Type |
Journal |
| Year |
2006 |
Publication |
29th European Conference on Visual Perception (ECVP’06), Perception Suppl s, 32: 56–56 |
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Saint-Petersburg (Russia) |
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CIC |
Approved |
no |
| Call Number |
CAT @ cat @ OtV2006 |
Serial |
659 |
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| Author |
J. Nuñez; O. Fors; Xavier Otazu; Vicenç Pala; Roman Arbiol; M.T. Merino |
| Title |
A Wavelet-Based Method for the Determination of the Relative Resolution Between Remotely Sensed Images |
Type |
Journal |
| Year |
2006 |
Publication |
IEEE Transactions on Geoscience and Remote Sensing, 44(9): 2539–2548 |
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CIC |
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no |
| Call Number |
CAT @ cat @ NFO2006 |
Serial |
660 |
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| Author |
Eduard Vazquez; Francesc Tous; Ramon Baldrich; Maria Vanrell |
| Title |
n-Dimensional Distribution Reduction Preserving its Structure |
Type |
Book Chapter |
| Year |
2006 |
Publication |
Artificial Intelligence Research and Development, M. Polit et al. (Eds.), 146: 167–175 |
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IOS Press |
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CIC |
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no |
| Call Number |
CAT @ cat @ VTB2006a |
Serial |
681 |
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| Author |
Eduard Vazquez; Ramon Baldrich; Javier Vazquez; Maria Vanrell |
| Title |
Topological histogram reduction towards colour segmentation |
Type |
Book Chapter |
| Year |
2007 |
Publication |
3rd Iberian Conference on Pattern Recognition and Image Analysis (IbPRIA 2007), J. Marti et al. (Eds.) LNCS 4477:55–62 |
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Gerona (Spain) |
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CIC |
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no |
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CAT @ cat @ VBV2007 |
Serial |
809 |
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| Author |
Javier Vazquez |
| Title |
Content-based Colour Space |
Type |
Report |
| Year |
2007 |
Publication |
CVC Technical Report #116 |
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CVC (UAB) |
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no |
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Admin @ si @ Vaz2007b |
Serial |
828 |
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| Author |
Javier Vazquez; Maria Vanrell; Anna Salvatella; Eduard Vazquez |
| Title |
A colour space based on the image content |
Type |
Book Chapter |
| Year |
2007 |
Publication |
Artificial Intelligence Research and Development, C. Angulo and L. Godo, pp 205–212 IOS Press |
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CIC |
Approved |
no |
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CAT @ cat @ VVS2007 |
Serial |
829 |
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| Author |
Xavier Otazu; Maria Vanrell; C. Alejandro Parraga |
| Title |
Mutiresolution Wavelet Framework Reproduces Induction Effects |
Type |
Journal |
| Year |
2007 |
Publication |
Perception 36:167–167, supp |
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CIC |
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no |
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CAT @ cat @ OVP2007 |
Serial |
842 |
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| Author |
C. Alejandro Parraga; Robert Benavente; Maria Vanrell |
| Title |
Modeling Colour-Naming Space with Fuzzy Sets |
Type |
Journal |
| Year |
2007 |
Publication |
Perception 36:198–198, supp |
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no |
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CAT @ cat @ PBV2007 |
Serial |
843 |
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| Author |
Xavier Otazu; Maria Vanrell; C. Alejandro Parraga |
| Title |
Multiresolution Wavelet Framework Models Brightness Induction Effects |
Type |
Journal |
| Year |
2008 |
Publication |
Vision Research |
Abbreviated Journal |
VR |
| Volume |
48 |
Issue |
5 |
Pages |
733–751 |
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no |
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CAT @ cat @ OVP2008a |
Serial |
927 |
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| Author |
O. Fors; A. Richichi; Xavier Otazu; J. Nuñez |
| Title |
A new wavelet-based approach for the automated treatment of large sets of lunar occultation data |
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Journal |
| Year |
2008 |
Publication |
Astronomy and Astrohysics |
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| Volume |
480 |
Issue |
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Pages |
297–304 |
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Approved |
no |
| Call Number |
CAT @ cat @ FRO2008 |
Serial |
934 |
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| Author |
Robert Benavente; Maria Vanrell; Ramon Baldrich |
| Title |
Parametric Fuzzy Sets for Automatic Color Naming |
Type |
Journal |
| Year |
2008 |
Publication |
Journal of the Optical Society of America A |
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| Volume |
25 |
Issue |
10 |
Pages |
2582–2593 |
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Approved |
no |
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CAT @ cat @ BVB2008 |
Serial |
1004 |
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| Author |
Eduard Vazquez; Maria Vanrell |
| Title |
Eines per al desenvolupament de competencies de enginyeria en un assignatura de Intel·ligencia Artificial |
Type |
Miscellaneous |
| Year |
2008 |
Publication |
V Jornades d’Innovacio Docent (UAB) |
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Bellaterra (Spain) |
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CIC |
Approved |
no |
| Call Number |
CAT @ cat @ VaV2008 |
Serial |
1011 |
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| Author |
T. Widemann; Xavier Otazu |
| Title |
Titanias radius and an upper limit on its atmosphere from the September 8, 2001 stellar occultation |
Type |
Journal Article |
| Year |
2009 |
Publication |
International Journal of Solar System Studies |
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199 |
Issue |
2 |
Pages |
458–476 |
| Keywords |
Occultations; Uranus, satellites; Satellites, shapes; Satellites, dynamics; Ices; Satellites, atmospheres |
| Abstract |
On September 8, 2001 around 2 h UT, the largest uranian moon, Titania, occulted Hipparcos star 106829 (alias SAO 164538, a V=7.2, K0 III star). This was the first-ever observed occultation by this satellite, a rare event as Titania subtends only 0.11 arcsec on the sky. The star's unusual brightness allowed many observers, both amateurs or professionals, to monitor this unique event, providing fifty-seven occultations chords over three continents, all reported here. Selecting the best 27 occultation chords, and assuming a circular limb, we derive Titania's radius: View the MathML source (1-σ error bar). This implies a density of View the MathML source using the value View the MathML source derived by Taylor [Taylor, D.B., 1998. Astron. Astrophys. 330, 362–374]. We do not detect any significant difference between equatorial and polar radii, in the limit View the MathML source, in agreement with Voyager limb image retrieval during the 1986 flyby. Titania's offset with respect to the DE405 + URA027 (based on GUST86 theory) ephemeris is derived: ΔαTcos(δT)=−108±13 mas and ΔδT=−62±7 mas (ICRF J2000.0 system). Most of this offset is attributable to a Uranus' barycentric offset with respect to DE405, that we estimate to be: View the MathML source and ΔδU=−85±25 mas at the moment of occultation. This offset is confirmed by another Titania stellar occultation observed on August 1st, 2003, which provides an offset of ΔαTcos(δT)=−127±20 mas and ΔδT=−97±13 mas for the satellite. The combined ingress and egress data do not show any significant hint for atmospheric refraction, allowing us to set surface pressure limits at the level of 10–20 nbar. More specifically, we find an upper limit of 13 nbar (1-σ level) at 70 K and 17 nbar at 80 K, for a putative isothermal CO2 atmosphere. We also provide an upper limit of 8 nbar for a possible CH4 atmosphere, and 22 nbar for pure N2, again at the 1-σ level. We finally constrain the stellar size using the time-resolved star disappearance and reappearance at ingress and egress. We find an angular diameter of 0.54±0.03 mas (corresponding to View the MathML source projected at Titania). With a distance of 170±25 parsecs, this corresponds to a radius of 9.8±0.2 solar radii for HIP 106829, typical of a K0 III giant. |
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CAT @ cat @ Wid2009 |
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1052 |
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