Results 71 to 80 of about 83,591 (207)
Truncated drumlins and their implication for past sea level reconstructions
Boreas, EarlyView.Coastal erosion of glacigenic sediments, particularly in the form of retreating drumlin bluffs, is a key process in paraglacial landscape evolution during periods of relative sea‐level (RSL) rise. As marine transgression reworks formerly subaerial glacial terrains, drumlins act as discrete sediment sources generating characteristic erosional and ...
Riccardo Arosio +3 more
wiley +1 more source
Azimuth ambiguity suppression in SAR images using Doppler-sensitive signals [PDF]
, 2015 In the article the problem of the azimuth ambiguity in synthetic aperture radar (SAR) images and its genesis are presented. A method of suppressing the ambiguities by utilization of Doppler-sensitive signals is proposed, and the necessary modifications ...
Leśnik, Cz., Serafin, P., Kawalec, A.
core +1 more source
IEEE Access, 2018 We analyzed the relation between two opposite effects of mutual coupling (MC), correlation reduction and gain loss, on the MIMO antenna performance in three-dimensional (3D) space. In the antenna level, those MC effects can be represented in terms of two
Satya Nandiwardhana, Jae-Young Chung
doaj +1 more source
PSHead: 3D Head Reconstruction from a Single Image with Diffusion Prior and Self‐Enhancement
Computer Graphics Forum, EarlyView.We introduce PSHead, a coarse‐to‐fine framework guided by both object and face priors, to produce a Gaussian‐based 3D avatar for a single frontal‐view reference image. In the coarse stage, we create an initial 3D representation by applying diffusion models trained for general object generation, using Score Distillation Sampling losses over novel views.
Jing Yang +4 more
wiley +1 more source
Suppression of Additional Azimuth Ambiguities under Multi-Channel and Multi-Waveform SAR
, 2020 Future spaceborne SAR satellites are going to handle multiple receivers to take both high resolution and wide observation swath. In addition, they will transmit multiple chirp patterns to reduce the effect of the range ambiguity. Such a multi-channel and
Prats-Iraola, Pau +3 more
core +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingStaggered synthetic aperture radar (SAR) is compatible with quadrature-polarimetric (quad-pol) SAR, enabling ultrawide continuous swath quad-pol SAR imaging with fine azimuth resolution.
Ruizhen Song +4 more
doaj +1 more source
High‐Gloss SVBRDF Capture Using Bounce Light
Computer Graphics Forum, EarlyView.Abstract Reflectance capture aims at the visual reproduction of an object under varying illumination. Past works differ substantially in their experimental overhead, from single‐ or few‐image approaches, that employ significant (often learned) priors at the expense of biased reconstructions, to more accurate approaches that tend to be time‐consuming ...
Tomáš Iser +2 more
wiley +1 more source
SAR Image Processing with Suppression of the Azimuth Ambiguities.
, 1992 This paper proposes a method for removing the azimuth ambiguities of point targets in SAR images. The proposed method for suppressing the azimuth ambiguities of point targets has a substantial significance in enabling the PRF constraints in the SAR ...
Moreira, A.
core
TreeON: Reconstructing 3D Tree Point Clouds from Orthophotos and Heightmaps
Computer Graphics Forum, EarlyView.Abstract We present TreeON, a novel neural‐based framework for reconstructing detailed 3D tree point clouds from sparse top‐down geodata, using only a single orthophoto and its corresponding Digital Surface Model (DSM). Our method introduces a new training supervision strategy that combines both geometric supervision and a differentiable shadow and ...
Angeliki Grammatikaki +4 more
wiley +1 more source
Effect of ambiguities on SAR picture quality [PDF]
, 1978 The degradation of picture quality is studied for a high-resolution, large-swath SAR mapping system subjected to speckle, additive white Gaussian noise, and range and azimuthal ambiguities occurring because of the non-finite antenna pattern produced by a
Korwar, V. N., Lipes, R. G.
core