Spherical gradient illumination
WebWe propose a variant to polarized gradient illumination facial scan-ning which uses monochrome instead of color cameras to achieve more efficient and higher-resolution results. In typical polarized gra-dient facial scanning, sub-millimeter geometric detail is acquired by photographing the subject in eight or more polarized spherical gra- WebDec 17, 2024 · "Polarized Spherical Gradient Illumination was a breakthrough in facial capture technology allowing shape and reflectance capture of an actor's face with sub-millimeter detail, enabling the ...
Spherical gradient illumination
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Webict.usc.edu WebDec 1, 2011 · We present a novel process for acquiring detailed facial geometry with high resolution diffuse and specular photometric information from multiple viewpoints using polarized spherical gradient...
WebAug 9, 2024 · The method allows us to estimate layered reflectance albedos using a single-shot polarized light-field image under either uniform (TPLF) or partially (FPLF) polarized illumination. Furthermore, the method achieves novel layered separation of photometric normals acquired under polarized spherical gradient illumination. WebAug 5, 2024 · While capturing spherical color gradient illumination still requires a special lighting setup, reduction to just two illumination conditions allows the technique to be applied to dynamic facial ...
WebWe estimate surface normal maps of an object from either its diffuse or specular reflectance using four spherical gradient illumination patterns. In contrast to traditional photometric stereo, the spherical patterns allow normals to be estimated simultaneously from any number of viewpoints. http://wp.doc.ic.ac.uk/rgi/project/diffuse-specular-separation-using-binary-spherical-gradient-illumination/
http://wp.doc.ic.ac.uk/rgi/project/diffuse-specular-separation-using-binary-spherical-gradient-illumination/
WebNov 24, 2015 · Images of an inspected object are taken in parallel with multiple synchronized cameras while the object is placed in an illumination setup that produces time-varying spherical gradient illumination for normal estimation. In contrast to existing approaches, the normal information is not only used to refine the preliminary stereo … mfow welfare fundWebspherical gradient illumination patterns related to the second order spherical harmonics are sufficient for a robust estimate of per pixel specular roughness (Fig. 1, (c)). Thus, we go further than previous work on image-based measurement of specular BRDFs that typi-cally obtain sparse estimates of the spatial variation. Our technique how to calculate cr4WebBefore returning to Zhejiang University to co-found the Graphics and Parallel Systems (GAPS) Lab with Prof. ZHOU Kun in Apr. 2010, I spent a happy five years in the Internet Graphics Group, Microsoft Research Asia, first as an intern then as an associate researcher. I received my Ph.D degree in computer science from Zhejiang University in March, 2007. mfow san franciscoWebWe present a novel process for acquiring detailed facial geometry with high resolution diffuse and specular photometric information from multiple viewpoints using polarized … mfow wilmingtonWebMay 10, 2016 · This is my approach for polar coordinates, it should work likewise for sphericals. For a scalar function f, the gradient in polar coordinates r and φ is. g r a d ( f) = … mfp047cclk-03WebWe present a novel method for estimating specular roughness and tangent vectors, per surface point, from polarized second order spherical gradient illumination patterns. We … mfow unionWebA luminaire adapted to apply an auto-gradient effect across pixels has an interface coupled by a connection to a controller. The controller has electronic circuitry that receives a predetermined start light parameter for a start pixel of a luminaire and receives a predetermined end light parameter for an end pixel of the first luminaire, the … m. fox optical properties of solids 2002