Search Results for author: Christopher Hahne

Found 10 papers, 8 papers with code

PlenoptiSign: an optical design tool for plenoptic imaging

1 code implementation1 Jun 2020 Christopher Hahne, Amar Aggoun

Plenoptic imaging enables a light-field to be captured by a single monocular objective lens and an array of micro lenses attached to an image sensor.

Baseline and Triangulation Geometry in a Standard Plenoptic Camera

1 code implementation9 Oct 2020 Christopher Hahne, Amar Aggoun, Vladan Velisavljevic, Susanne Fiebig, Matthias Pesch

We present a geometrical light field model allowing the triangulation to be applied to a plenoptic camera in order to predict object distances or specify baselines as desired.

PlenoptiCam v1.0: A light-field imaging framework

2 code implementations14 Oct 2020 Christopher Hahne, Amar Aggoun

Light-field cameras play a vital role for rich 3-D information retrieval in narrow range depth sensing applications.

Camera Calibration Information Retrieval +1

Multimodal Exponentially Modified Gaussian Oscillators

1 code implementation25 Sep 2022 Christopher Hahne

Acoustic modeling serves audio processing tasks such as de-noising, data reconstruction, model-based testing and classification.

Learning How To Robustly Estimate Camera Pose in Endoscopic Videos

2 code implementations17 Apr 2023 Michel Hayoz, Christopher Hahne, Mathias Gallardo, Daniel Candinas, Thomas Kurmann, Maximilian Allan, Raphael Sznitman

Purpose: Surgical scene understanding plays a critical role in the technology stack of tomorrow's intervention-assisting systems in endoscopic surgeries.

3D Reconstruction Optical Flow Estimation +3

3-Dimensional Sonic Phase-invariant Echo Localization

1 code implementation14 Jun 2023 Christopher Hahne

Parallax and Time-of-Flight (ToF) are often regarded as complementary in robotic vision where various light and weather conditions remain challenges for advanced camera-based 3-Dimensional (3-D) reconstruction.

Object Localization

Geometric Ultrasound Localization Microscopy

no code implementations27 Jun 2023 Christopher Hahne, Raphael Sznitman

Contrast-Enhanced Ultra-Sound (CEUS) has become a viable method for non-invasive, dynamic visualization in medical diagnostics, yet Ultrasound Localization Microscopy (ULM) has enabled a revolutionary breakthrough by offering ten times higher resolution.

StofNet: Super-resolution Time of Flight Network

1 code implementation23 Aug 2023 Christopher Hahne, Michel Hayoz, Raphael Sznitman

Time of Flight (ToF) is a prevalent depth sensing technology in the fields of robotics, medical imaging, and non-destructive testing.

Super-Resolution

RF-ULM: Ultrasound Localization Microscopy Learned from Radio-Frequency Wavefronts

1 code implementation2 Oct 2023 Christopher Hahne, Georges Chabouh, Arthur Chavignon, Olivier Couture, Raphael Sznitman

However, our study uncovers an enormous potential: The process of delay-and-sum beamforming leads to an irreversible reduction of Radio-Frequency (RF) channel data, while its implications for localization remain largely unexplored.

Super-Resolution

Learning Super-Resolution Ultrasound Localization Microscopy from Radio-Frequency Data

no code implementations7 Nov 2023 Christopher Hahne, Georges Chabouh, Olivier Couture, Raphael Sznitman

Ultrasound Localization Microscopy (ULM) enables imaging of vascular structures in the micrometer range by accumulating contrast agent particle locations over time.

Super-Resolution

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