Results 71 to 80 of about 200,445 (197)

Overview of Techniques for Improving High-resolution Spaceborne SAR Imaging and Image Quality

Leida xuebao, 2019
As an important tool for acquiring remote sensing information, Synthetic Aperture Radar (SAR) has various modes, including high-resolution wide-swath, multi-angle information acquisition, high temporal observation, and three-dimensional topographic ...
LI Chunsheng, YU Ze, CHEN Jie
doaj   +1 more source

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, Andrew Finlayson, Guillaume Michel, Dayton Dove   +3 more
wiley   +1 more source

Inverse synthetic aperture ladar imaging algorithm for space spinning targets

The Journal of Engineering, 2019
Due to the limitation of laser modulation technology, the azimuth Doppler ambiguity problem exists in the process of inverse synthetic aperture ladar (ISAL) imaging for spinning targets. The traditional azimuth imaging method will not be used to obtain a
Yakun Lv, Yanhong Wu, Yanhong Wu, Hongyan Wang, Lei Qiu   +4 more
doaj   +1 more source

Effective ambiguity checking in biosequence analysis [PDF]

, 2005
Reeder J, Steffen P, Giegerich R. Effective ambiguity checking in biosequence analysis. BMC Bioinformatics. 2005;6(1): 153.Background: Ambiguity is a problem in biosequence analysis that arises in various analysis tasks solved via dynamic programming ...
Peter Steffen, Janina Reeder, Robert Giegerich, Giegerich, Robert, Steffen, Peter, Reeder, Janina   +5 more
core   +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, Tianhan Wu, Kyle Fogarty, Fangcheng Zhong, Cengiz Oztireli   +4 more
wiley   +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, Andrei‐Timotei Ardelean, Tim Weyrich   +2 more
wiley   +1 more source

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, Johannes Eschner, Pedro Hermosilla, Oscar Argudo, Manuela Waldner   +4 more
wiley   +1 more source

High-Resolution Retrieval of Radial Ocean Current Velocity from SAR Strip-Map Imagery

Remote Sensing
The retrieval of radial ocean surface current from Synthetic Aperture Radar (SAR) data is important for ocean current research and effective ocean remote sensing.
Jian Wang, Tao Lai, Xiaoqing Wang
doaj   +1 more source

Theoretical analysis and experimental verification of wideband multiple-input multiple-output imaging radar

The Journal of Engineering, 2019
Multiple-input multiple-output (MIMO) radar is a novel radar system which can achieve more individual observation echoes than the number of the actual antennas by transmitting orthogonal waveforms.
Jingyang Wang, Cheng Hu, Weiming Tian, Rui Wang   +3 more
doaj   +1 more source

Layer3D: A 3D Layered Representation for Multiview Vector Graphics

Computer Graphics Forum, EarlyView.
Abstract We present Layer3D, a novel 3D neural representation that models objects as collections of decomposable neural implicit primitives. These primitives enable the generation of layered images with consistent correspondences across viewpoints, establishing a flexible framework for multiview vector graphics decomposition.
Zhongyue Guan, Yixin Hu, Zeyu Wang
wiley   +1 more source