While we’re populating this publication database, please also see Matthias Hullin’s private homepage for older papers.

4D Imaging through Spray-On Optics

Julian Iseringhausen, Bastian Goldl├╝cke, Nina Pesheva, Stanimir Iliev, Alexander Wender, Martin Fuchs, Matthias B. Hullin
ACM Transactions on Graphics 36(4) (Proc. SIGGRAPH), 35:1--35:11, 2017.

Raindrops on a window heavily distort the view of the scene. We show that a fully calibrated 4D light field can be recovered from a single photograph taken under such adverse conditions.

Digital Transmission of Subjective Material Appearance

Rodrigo Martín, Michael Weinmann, Matthias B. Hullin
Proc. WSCG, 2017.

How well do various digital appearance representations perform at communicating the "touch and feel" of materials?

Snapshot Difference Imaging using Correlation Time-of-Flight Sensors

Clara Callenberg, Felix Heide, Gordon Wetzstein, Matthias Hullin
ACM Transactions on Graphics 36(6) (Proc. SIGGRAPH Asia), to appear, 2017.

Computation of image differences is a key operation in computational imaging. We use time-of-flight sensors to perform this operation in a single shot, and discover some remarkable features.

Scratch Iridescence: Wave-Optical Rendering of Diffractive Surface Structure

Sebastian Werner*, Zdravko Velinov*, Wenzel Jakob, Matthias B. Hullin (* joint first authors)
ACM Transactions on Graphics 36(6) (Proc. SIGGRAPH Asia), to appear, 2017.

Many real-world surfaces are covered in fine scratches that diffract light in colorful ways. Our model seamlessly transitions between ray optics and wave optics to recreate this intricate effect.

Machine Learning Assisted Identification of People Hidden Behind a Corner

Piergiorgio Caramazza, Alessandro Boccolini, Gabriella Musarra, Matthias Hullin, Roderick Murray-Smith, Daniele Faccio
Computational Optical Sensing and Imaging, 2017.

We demonstrate the use of machine learning to classify temporal histograms of the light-echoes backscattered from bodies hidden from view around a corner, captured by a SPAD camera.

Material Classification using Raw Time-of-Flight Measurements

Shuochen Su, Felix Heide, Robin Swanson, Jonathan Klein, Clara Callenberg, Matthias B. Hullin, Wolfgang Heidrich
Proc. IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2016.

We show that using multi-frequency time-of-flight measurements, five different white materials can be distinguished on a per-pixel basis.

Tracking Objects Outside the Line of Sight using 2D Intensity Images

Jonathan Klein, Christoph Peters, Jaime Martín, Martin Laurenzis, Matthias B. Hullin
Scientific Reports (Nature Publishing Group), 6, 32491; doi: 10.1038/srep32491, 2016.

We demonstrate the tracking of objects outside the line of sight from 3rd-order indirect diffuse reflections, captured using a regular laser pointer and a 2D camera.

An Interactive Appearance Model for Microscopic Fiber Surfaces

Zdravko Velinov and Matthias Hullin
Proc. Vision, Modeling and Visualization, Bayreuth, Germany, 2016.

A reflectance model for pile fabrics that you can "draw on" using your fingers, like velvet or Alcantara.

Doppler Time-of-Flight Imaging

Felix Heide, Wolfgang Heidrich, Matthias B. Hullin, Gordon Wetzstein
ACM Transactions on Graphics (Proc. SIGGRAPH), 34 (4), 2015.

A new computational imaging system that captures metric radial velocity information per pixel -- think of a huge array of traffic speed guns that use light instead of radar.

Diffuse Mirrors: 3D Reconstruction from Diffuse Indirect Illumination using Inexpensive Time-of-Flight Sensors

Felix Heide, Lei Xiao, Wolfgang Heidrich and Matthias B. Hullin
Proc. IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2014.

How to look around a corner using echoes of light, using low-end devices that can't even properly measure such data.

Low-Budget Transient Imaging using Photonic Mixer Devices

Felix Heide*, Matthias B. Hullin*, James Gregson, Wolfgang Heidrich (* joint first authors)
ACM Transactions on Graphics (Proc. SIGGRAPH), 32 (4), 2013.

A computational method for capturing videos of light in flight using consumer-grade imaging hardware.

Dynamic Display of BRDFs

Matthias B. Hullin, Hendrik P. A. Lensch, Ramesh Raskar, Hans-Peter Seidel, Ivo Ihrke
Computer Graphics Forum (Proc. EUROGRAPHICS), 2011.

We define the problem of physically displaying material appearance, and demonstrate a conceptual device that exhibits precisely controllable reflectance distributions by generating waves on a water surface.

Physically-Based Real-Time Lens Flare Rendering

Matthias B. Hullin, Elmar Eisemann, Hans-Peter Seidel, Sungkil Lee
ACM Transactions on Graphics 30 (4) (Proc. SIGGRAPH), 2011.

Our take on this popular effect; to our knowledge, the most complete and most efficient model to date.