Separation of interreflections based on parallel single-pixel imaging.

Area of Science:

• Computer Vision
• Optical Metrology
• Computational Imaging

Background:

• Interreflections in 3D scenes, caused by light bouncing between surfaces, degrade the accuracy of 3D reconstruction and optical measurements.
• Existing methods struggle to effectively isolate and quantify these complex light interactions.

Purpose of the Study:

• To propose a novel method for separating interreflections using parallel single-pixel imaging (PSI).
• To decompose interreflections into distinct light components (1st bounce, 2nd bounce, higher order).

Main Methods:

• Utilized parallel single-pixel imaging (PSI) to acquire light transport coefficients for each camera pixel.
• Employed these coefficients to decompose the intensity distribution of a projector and isolate interreflection components.

Main Results:

• Successfully separated interreflections in a real-world static scene featuring a concave surface.
• Demonstrated the capability to decompose interreflections into 1st bounce, 2nd bounce, and higher-order light components.

Conclusions:

• The proposed PSI-based method offers an effective solution for interreflection separation.
• This advancement has the potential to enhance the accuracy of 3D recovery and optical measurements in challenging environments.