Jorge Garcia-Pueyo

📢 We are thrilled to announce the Call for Papers for #Eurographics2026 in Aachen! Join us in shaping the future of computer graphics - submit your cutting-edge research!

Deadline: Sept. 26, 2025
Check it out: eg2026.github.io/call_for_ful...

Thanks to my supervisor Adolfo Muñoz for his help in this work!

We hope these new insights enable a more unified view between NLOS imaging and optics, especially between diffraction and Phasor Fields, and they can help bring existing tools from optics like super resolution, compressive sensing or extended depth of field to NLOS. (7/7)

This allows us to propose two new optical analogies, beyond the virtual camera analogy introduced by Phasor Fields:
- The relay surface as an hologram recorder
- or as a phase conjugator.
These help reinterpret the role of the relay surface in Phasor Fields’ virtual world! (6/7)

In this work, we show how Phasor Fields, despite apparently using a forward diffraction operator, can be understood as an inverse diffraction method for reconstructing the hidden scene. Building on this, we introduce Inverse Phasor Fields as a new method for NLOS. (5/7)

But wait, how can a forward diffraction operator solve an inverse problem? Isn’t that contradictory?
This is the central question we tackle. The key lies in the unitary property of diffraction operators, studied already in inverse diffraction theory. (4/7)

Enter Phasor Fields:
an existing framework that transforms NLOS imaging into virtual LOS imaging by treating the relay surface as a virtual camera. This enables to use a forward diffraction operator (Rayleigh-Sommerfeld diffraction operator) to reconstruct the hidden scene. (3/7)

What is NLOS Imaging?
Non-line-of-sight (NLOS) imaging aims to see hidden scenes (not directly visible) by analyzing light that bounces off visible surfaces (relay surface). As a classic inverse problem, we want to invert this indirect light to reconstruct the hidden scene. (2/7)

I’m happy to announce that our work “Forward and Inverse Diffraction in Phasor Fields” (tinyurl.com/ForwardInvDi...) has been accepted to Optics Express. We explore how wave diffraction links to NLOS imaging, and how Phasor Fields can be used forward and inversely. (1/7)