Computational Interferometric Imaging

SIGGRAPH 2023 course

Interferometric imaging techniques use illumination with different coherence properties to enable capabilities such as micrometer 3D imaging, femtosecond transient imaging, non-line-of-sight imaging, and imaging through scattering media.


Alankar Kotwal
Alankar Kotwal
University of Texas Medical Branch
Florian Willomitzer
Florian Willomitzer
University of Arizona
Ioannis Gkioulekas
Ioannis Gkioulekas
Carnegie Mellon University


This course provides an overview of recent developments in computational interferometric imaging. We provide background on interferometric imaging and describe emerging technologies capable of unprecedented micrometer depth and femtosecond timing resolutions. We show applications on active and passive 3D imaging, transient imaging, non-line-of-sight imaging, and imaging through scattering media.


Times are approximate. Slides for each course section are available below.

Time (PT)TopicPresenter
9:00 - 9:15 amWelcome and introduction to interferometryIoannis Gkioulekas
9:15 - 9:35 amTwo-wavelength interferometryFlorian Willomitzer
9:35 - 9:55 amPartially-coherent interferometryAlankar Kotwal
9:55 - 10:20 pmInterferometric computational imagingFlorian Willomitzer, Ioannis Gkioulekas
10:15 - 10:30 amConclusion and Q & AIoannis Gkioulekas



The slides for this course are available on the ACM Digital Library and locally.


The SIGGRAPH blog featured our course! You can read our interview here.


The following is a list of references to papers we highlight in each section of the course. It is not an exhaustive, or even representative, bibliography for the corresponding research areas. For pointers to additional resources, we recommend perusing the bibliography of these references.

Background on interferometry

Synthetic wavelength interferometry

Partially-coherent interferometry

Non-line-of-sight imaging

Transient imaging

Single-shot acquisition of synthetic fields

Passive interferometry

Speckle rendering


This course was supported by NSF awards 1730147, 2008123, 2047341, a Sloan Research Fellowship for Ioannis Gkioulekas, and an OPTICA 20th Anniversary Challenge Winner Grant for Florian Willomitzer. We are also grateful to the sponsors of the individual research projects presented in this course (NSF, ONR, DARPA, OPTICA, Sloan Foundation, Amazon Web Services).