IEEE Trans Pattern Anal Mach Intell - Video Normals from Colored Lights.

Tópicos

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Resumo

We present an algorithm and the associated single-view capture methodology to acquire the detailed 3D shape, bends, and wrinkles of deforming surfaces. Moving 3D data has been difficult to obtain by methods that rely on known surface features, structured light, or silhouettes. Multispectral photometric stereo is an attractive alternative because it can recover a dense normal field from an untextured surface. We show how to capture such data, which in turn allows us to demonstrate the strengths and limitations of our simple frame-to-frame registration over time. Experiments were performed on monocular video sequences of untextured cloth and faces with and without white makeup. Subjects were filmed under spatially separated red, green, and blue lights. Our first finding is that the color photometric stereo setup is able to produce smoothly varying per-frame reconstructions with high detail. Second, when these 3D reconstructions are augmented with 2D tracking results, one can register both the surfaces and relax the homogenous-color restriction of the single-hue subject. Quantitative and qualitative experiments explore both the practicality and limitations of this simple multispectral capture system.

Resumo Limpo

present algorithm associ singleview captur methodolog acquir detail d shape bend wrinkl deform surfac move d data difficult obtain method reli known surfac featur structur light silhouett multispectr photometr stereo attract altern can recov dens normal field untextur surfac show captur data turn allow us demonstr strength limit simpl frametofram registr time experi perform monocular video sequenc untextur cloth face without white makeup subject film spatial separ red green blue light first find color photometr stereo setup abl produc smooth vari perfram reconstruct high detail second d reconstruct augment d track result one can regist surfac relax homogenouscolor restrict singlehu subject quantit qualit experi explor practic limit simpl multispectr captur system

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