Apparatus and method of texture mapping for dental 3D scanners

摘要

A method for color texture imaging of teeth with a monochrome sensor array obtains a 3-D mesh representing a surface contour image according to image data from views of the teeth. For each view, the step of recording the image data produces a set of at least three monochromatic shaded images. Each set of monochrome shade images is combined to produce 2-D color shade images corresponding to one of the views. Each polygonal surface in the mesh is assigned to one of a subset of views of the subset. The polygon surfaces assigned to the same view are grouped within the texture fragment. The image coordinates for the 3-D mesh surfaces in each texture fragment are determined from the projections of the vertices on the view associated with the texture fragment. The 3-D mesh is rendered with texture values in 2-D color tone images corresponding to each texture fragment to produce a color texture surface contour image.