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RECONSTRUCTION OF LOCAL CURVATURE AND SURFACE SHAPE FOR SPECULAR OBJECTS
RECONSTRUCTION OF LOCAL CURVATURE AND SURFACE SHAPE FOR SPECULAR OBJECTS
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机译:重建局部物体的局部曲率和表面形状
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摘要
Recovery of local curvature and surface shape of an object having a specular component of reflection such as a mirror-like or specular object. The object is illuminated by a rainbow-like ordered spectrum of spatially distributed light whose wavelength varies in accordance with angle, and a spectral image is captured of the object. Local curvature is estimated for a point on the object based on spectral width at a wavelength peak of light reflected from the point, with a relatively wider width corresponding to a locally convex curvature and a relatively narrow width corresponding to a locally concave curvature. Surface shape information is recovered using the captured image based on a set relationship, obtained by calibration, by which wavelength of the ordered spectrum varies in accordance with angle. Physical and/or graphical replication of the object is informed by the recovered local curvature and surface shape.
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