Superheterodyne Interferometry

Superheterodyne Interferometry

A novel approach to high resolution Time-of-Flight imaging

State of the art Time-of-Flight cameras suffer low depth resolution caused by the technical limitations in electronics manufacturing. High resolution Time-of-Flight principles like single-wavelength interferometry are limited to smooth surfaces. We solve this problem by applying teachings known from multi-wavelengths interferometry. Paired with focal plane array sensors, the principle acquires sub-mm resolution full field 3D data of any surface type within a snapshot.



Mega-pixel time-of-flight imager with GHz modulation frequencies
F. Li, F. Willomitzer, P. Rangarajan, O. Cossairt.
OSA Computational Optical Sensing and Imaging, CTh2A. 2

Micro Resolution Time-of-Flight Imaging
F. Li, F. Willomitzer, P. Rangarajan, A. Velten, M. Gupta, O. Cossairt.
OSA Computational Optical Sensing and Imaging, CM2E. 4

SH-ToF: Micro Resolution Time-of-Flight Imaging with Superheterodyne Interferometry
F. Li, F. Willomitzer, P. Rangarajan, A. Velten, M. Gupta, O. Cossairt.
IEEE International Conference on Computational Photography (ICCP)

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Florian Willomitzer
Research Assistant Professor