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In this paper we present a novel approach for depth map enhancement from an RGB-D video sequence. The basic idea is to exploit the shading information in the color image. Instead of making assumption about surface albedo or controlled…

计算机视觉与模式识别 · 计算机科学 2019-12-16 Xinxin Zuo , Sen Wang , Jiangbin Zheng , Ruigang Yang

We introduce a continuous domain framework for the recovery of points on a surface in high dimensional space, represented as the zero-level set of a bandlimited function. We show that the exponential maps of the points on the surface…

计算机视觉与模式识别 · 计算机科学 2018-03-21 Sunrita Poddar , Mathews Jacob

Observations of debris disks allow for the study of planetary systems, even where planets have not been detected. However, debris disks are often only characterized by unresolved infrared excesses that resemble featureless blackbodies, and…

地球与行星天体物理 · 物理学 2015-06-22 Nicholas P. Ballering , George H. Rieke , Andras Gaspar

Reconstruction-based methods are widely explored in industrial visual anomaly detection. Such methods commonly require the model to well reconstruct the normal patterns but fail in the anomalies, and thus the anomalies can be detected by…

计算机视觉与模式识别 · 计算机科学 2025-03-17 Tongkun Liu , Bing Li , Zhuo Zhao , Xiao Du , Bingke Jiang , Leqi Geng

The vertical thickness of debris discs is often used as a measure of these systems' dynamical excitation and as clues to the presence of hidden massive perturbers such as planetary embryos. However, this argument could be flawed because the…

地球与行星天体物理 · 物理学 2015-05-13 Philippe Thebault

Surface reconstruction with preservation of geometric features is a challenging computer vision task. Despite significant progress in implicit shape reconstruction, state-of-the-art mesh extraction methods often produce aliased,…

计算机视觉与模式识别 · 计算机科学 2023-12-01 Natalia Soboleva , Olga Gorbunova , Maria Ivanova , Evgeny Burnaev , Matthias Nießner , Denis Zorin , Alexey Artemov

Aerial images are often degraded by space-varying motion blur and simultaneous uneven illumination. To recover high-quality aerial image from its non-uniform version, we propose a novel patch-wise restoration approach based on a key…

计算机视觉与模式识别 · 计算机科学 2017-06-28 Rui Chen , Huizhu Jia , Xiaodong Xie , Wen Gao

An uncommon double-ray scenario of light resonant scattering by a periodic metasurface is proposed to provide strong non-specular reflection. The metasurface is constracted as an array of silicon nanodisks placed on thin silica-on-metal…

We present a new method to infer the 3D dimensional luminosity distributions of edge-on barred galaxies with boxy-peanut/X (BP/X) shaped structures from their 2D surface brightness distributions. Our method relies on forward modeling of…

星系天体物理 · 物理学 2023-09-22 Shashank Dattathri , Monica Valluri , Eugene Vasiliev , Vance Wheeler , Peter Erwin

In this paper we propose a new method for reconstructing the surface density of matter in flat disks of spiral galaxies. The surface density is expressed through observational rotation velocity curves of visible matter in the disks of…

星系天体物理 · 物理学 2015-05-28 Alexander Shatskiy , Igor Novikov , Olga K. Sil'chenko , Jakob Hansen , Ivan Yu. Katkov

We present detailed three-dimensional modelling of the stellar luminosity distribution for the disks of 31 relatively nearby (<= 110 Mpc) edge-on spiral galaxies. In contrast to most of the standard methods available in the literature we…

天体物理学 · 物理学 2009-10-31 M. Pohlen , R. -J. Dettmar , R. Luetticke , U. Schwarzkopf

We present Keck/NIRC2 $K_{s}$ band high-contrast coronagraphic imaging of the luminous debris disk around the nearby, young A star HD 32297 resolved at a projected separation of $r$ = 0.3-2.5\arcsec{} ($\approx$ 35-280 AU). The disk is…

Future space telescopes will directly image extrasolar planets at visible wavelengths. Time-resolved reflected light from an exoplanet encodes information about atmospheric and surface inhomogeneities. Previous research has shown that the…

地球与行星天体物理 · 物理学 2018-09-19 Ben Farr , Will M. Farr , Nicolas B. Cowan , Hal M. Haggard , Tyler Robinson

We examine the relation between breaks in the surface brightness profiles and radial abundance gradients within the optical radius in the discs of 134 spiral galaxies from the CALIFA survey. The distribution of the radial abundance (in…

星系天体物理 · 物理学 2017-12-20 L. S. Pilyugin , E. K Grebel , I. A. Zinchenko , Y. A. Nefedyev , J. M. Vilchez

The Eclipse Mapping Method is an indirect imaging technique that transforms the shape of the eclipse light curve into a map of the surface brightness distribution of the occulted regions. Three decades of application of this technique to…

太阳与恒星天体物理 · 物理学 2015-08-14 Raymundo Baptista

We present the results of an analysis of Pan-STARRS1 Medium Deep Survey multi-band (g,r,i,z,y) images of a sample of 698 low-redshift disk galaxies that span broad ranges in stellar mass, star-formation rate, and bulge/disk ratio. We use…

The observations of external galaxies are projected to the 2D sky plane. Reconstructing the 3D intrinsic density distribution of a galaxy from the 2D image is challenging, especially for barred galaxies, but is a critical step for…

星系天体物理 · 物理学 2021-10-22 Behzad Tahmasebzadeh , Ling Zhu , Juntai Shen , Ortwin Gerhard , Yujing Qin

While galactic bulges may contain no significant dust of their own, the dust within galaxy discs can strongly attenuate the light from their embedded bulges. Furthermore, such dust inhibits the ability of observationally-determined…

天体物理学 · 物理学 2012-04-26 Alister W. Graham , C. C. Worley

We present wide-field near-infrared J and Ks images of the Andromeda Galaxy taken with WIRCam on the Canada-France-Hawaii Telescope (CFHT) as part of the Andromeda Optical and Infrared Disk Survey (ANDROIDS). This data set allows…

天体物理仪器与方法 · 物理学 2015-06-15 Jonathan Sick , Stéphane Courteau , Jean-Charles Cuillandre , Michael McDonald , Roelof de Jong , R. Brent Tully

We present ALMA mosaic observations at 1.3 mm (223 GHz) of the Fomalhaut system with a sensitivity of 14 $\mu$Jy/beam. These observations provide the first millimeter map of the continuum dust emission from the complete outer debris disk…