Extracting depth and matte using a color-filtered aperture
ACM SIGGRAPH Asia 2008 papers
Robust 3D face capture using example-based photometric stereo
Computers in Industry
Real-time recovery of moving 3D faces for emerging applications
Computers in Industry
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Spectral multiplexing allows multiple channels of information to be captured simultaneously, using readily available color cameras. Information may be multiplexed across the color channels of a camera by use of colored lights (e.g. [Woodham 1980; Hernandez and Vogiatzis 2010]) or colored filters (e.g. [Bando et al. 2008]). We propose a novel method for single-shot photometric stereo by spectral multiplexing. The output of our method is a simultaneous per-pixel estimate of the surface normal and full-color reflectance. Our method is well suited to materials with varying color and texture, requires no time-varying illumination, and no high-speed cameras. Being a single-shot method, it may be applied to dynamic scenes without any need for optical flow. Our key contributions are a generalization of three-color photometric stereo to multiple (more than three) color channels, and the design of a practical six-color-channel system using off-the-shelf parts only.