The geometric reconstruction of a diffuse surface can be accomplished with a simple projector-camera system [1]. However, in the case of specular objects – such as a gas-liquid interface (GLI) – these same methods fail to uniquely define surface location and orientation. Several methods have been demonstrated for recovering specular surface geometry including: using multiple cameras with diffuse scene points [2, 3], using one camera with images of a calibration target in two or more locations [4] and resolving the distortion of known geometry imaged by one camera [5, 6]. We seek a method that uses a single lenslet-based light field (LF) camera and one projector to reconstruct a GLI. This setup is attractive for situations that require the hardware to be small to perform measurements in confined spaces.

Truscott, T.T., Belden, J., & Jafek, A., “Light Field Measurement of Reflective Interfaces” First International Symposium for Image Based Metrology (ISIMet), Honolulu, HI, April 2016.