35 citations · 90 across the 9 of their papers we have counts for
11 papers
Relative Illumination Fields: Learning Medium and Light Independent Underwater Scenes
Mengkun She, Felix Seegräber, David Nakath +2
We address the challenge of constructing a consistent and photorealistic Neural Radiance Field in inhomogeneously illuminated, scattering environments with unknown, co-moving light…
A Calibration Tool for Refractive Underwater Vision
Felix Seegräber, Mengkun She, Felix Woelk +1
Many underwater applications rely on vision sensors and require proper camera calibration, i.e. knowing the incoming light ray for each pixel in the image. While for the ideal pinh…
Refractive COLMAP: Refractive Structure-from-Motion Revisited
Mengkun She, Felix Seegräber, David Nakath +1
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-por…
Visual Tomography: Physically Faithful Volumetric Models of Partially Translucent Objects
David Nakath, Xiangyu Weng, Mengkun She +1
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…
Advanced Underwater Image Restoration in Complex Illumination Conditions
Yifan Song, Mengkun She, Kevin Köser
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…
Semihierarchical Reconstruction and Weak-area Revisiting for Robotic Visual Seafloor Mapping
Mengkun She, Yifan Song, David Nakath +1
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…
Investigation of the Challenges of Underwater-Visual-Monocular-SLAM
Michele Grimaldi, David Nakath, Mengkun She +1
In this paper, we present a comprehensive investigation of the challenges of Monocular Visual Simultaneous Localization and Mapping (vSLAM) methods for underwater robots. While sig…
Marine Bubble Flow Quantification Using Wide-Baseline Stereo Photogrammetry
Mengkun She, Tim Weiß, Yifan Song +3
Reliable quantification of natural and anthropogenic gas release (e.g.\ CO, methane) from the seafloor into the water column, and potentially to the atmosphere, is a challengin…
Refractive Geometry for Underwater Domes
Mengkun She, David Nakath, Yifan Song +1
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, a…
Light Pose Calibration for Camera-light Vision Systems
Yifan Song, Furkan Elibol, Mengkun She +2
Illuminating a scene with artificial light is a prerequisite for seeing in dark environments. However, nonuniform and dynamic illumination can deteriorate or even break computer vi…
Deep Sea Robotic Imaging Simulator
Yifan Song, David Nakath, Mengkun She +2
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 rela…