Zobrazeno 1 - 10
of 35
pro vyhledávání: '"She, Mengkun"'
Many underwater robotic applications relying on vision sensors require proper camera calibration, i.e. knowing the incoming light ray for each pixel in the image. While for the ideal pinhole camera model all viewing rays intersect in a single 3D poin
Externí odkaz:
http://arxiv.org/abs/2405.18018
In this paper, we present a complete refractive Structure-from-Motion (RSfM) framework for underwater 3D reconstruction using refractive camera setups (for both, flat- and dome-port underwater housings). Despite notable achievements in refractive mul
Externí odkaz:
http://arxiv.org/abs/2403.08640
When created faithfully from real-world data, Digital 3D representations of objects can be useful for human or computer-assisted analysis. Such models can also serve for generating training data for machine learning approaches in settings where data
Externí odkaz:
http://arxiv.org/abs/2312.13494
Publikováno v:
ISPRS Journal of Photogrammetry and Remote Sensing, Volume 209, March 2024, Pages 197-212
Underwater image restoration has been a challenging problem for decades since the advent of underwater photography. Most solutions focus on shallow water scenarios, where the scene is uniformly illuminated by the sunlight. However, the vast majority
Externí odkaz:
http://arxiv.org/abs/2309.02217
Publikováno v:
Journal of Field Robotics 2024
Despite impressive results achieved by many on-land visual mapping algorithms in the recent decades, transferring these methods from land to the deep sea remains a challenge due to harsh environmental conditions. Images captured by autonomous underwa
Externí odkaz:
http://arxiv.org/abs/2308.06147
In this paper, we present a comprehensive investigation of the challenges of Monocular Visual Simultaneous Localization and Mapping (vSLAM) methods for underwater robots. While significant progress has been made in state estimation methods that utili
Externí odkaz:
http://arxiv.org/abs/2306.08738
Reliable quantification of natural and anthropogenic gas release (e.g.\ CO$_2$, methane) from the seafloor into the water column, and potentially to the atmosphere, is a challenging task. While ship-based echo sounders such as single beam and multibe
Externí odkaz:
http://arxiv.org/abs/2112.07414
Publikováno v:
ISPRS Journal of Photogrammetry and Remote Sensing 2022
Underwater cameras are typically placed behind glass windows to protect them from the water. Spherical glass, a dome port, is well suited for high water pressures at great depth, allows for a large field of view, and avoids refraction if a pinhole ca
Externí odkaz:
http://arxiv.org/abs/2108.06575
Publikováno v:
In ISPRS Journal of Photogrammetry and Remote Sensing March 2024 209:197-212
Nowadays underwater vision systems are being widely applied in ocean research. However, the largest portion of the ocean - the deep sea - still remains mostly unexplored. Only relatively few image sets have been taken from the deep sea due to the phy
Externí odkaz:
http://arxiv.org/abs/2006.15398