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Bjoern Haefner

3 accepted papers

2024

Sparse Views Near Light: A Practical Paradigm for Uncalibrated Point-light Photometric Stereo

CVPR 2024poster

Neural approaches have shown a significant progress on camera-based reconstruction. But they require either a fairly dense sampling of the viewing sphere or pre-training on an existing dataset thereby limiting their generalizability. In contrast photometric stereo (PS) approaches have shown great po…

Cited by 6SourcePDFScholar
2019

Variational Uncalibrated Photometric Stereo Under General Lighting

ICCV 2019poster

Photometric stereo (PS) techniques nowadays remain constrained to an ideal laboratory setup where modeling and calibration of lighting is amenable. To eliminate such restrictions, we propose an efficient principled variational approach to uncalibrated PS under general illumination. To this end, the…

Cited by 44PDFcodeScholar
2018

Fight Ill-Posedness With Ill-Posedness: Single-Shot Variational Depth Super-Resolution From Shading

CVPR 2018poster

We put forward a principled variational approach for up-sampling a single depth map to the resolution of the companion color image provided by an RGB-D sensor. We combine heterogeneous depth and color data in order to jointly solve the ill-posed depth super-resolution and shape-from-shading problems…