Coloring of three-dimensional printed objects
First Claim
1. A method of printing a three-dimensional (3D) color object using materials having at least some transparency, layer-by-layer, the method comprising:
- obtaining a 3D CAD file defining a 3D geometry and a color texture for said color object;
dividing said 3D geometry into a core and a color shell;
dividing said color shell into volumetric regions;
based on a look up table (LUT), assigning each of said regions with an arrangement of voxels in a color stack that results in an optimal reproduction of the requested color;
based on said 3D geometry, determining conflicting instances in which the color stack of one region interferes with a color stack of another region;
in case of conflict between color stacks, applying a colorcorrection; and
printing said 3D color object.
1 Assignment
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Accused Products
Abstract
A method of printing a three-dimensional (3D) color object, layer-by-layer, comprises: obtaining a 3D CAD specification defining a 3D geometry and a surface color distribution for the color object to be printed, defining regions on a surface of the color object; defining colors for each region based on the CAD specification; determining, using the 3D geometry of the specification, conditions applying at respective regions that are liable to cause color variation, such that using the colors as defined at the respective regions may give rise to a coloration error; selecting color corrections defined for respective determined conditions; correcting the defined colors; and printing the 3D color object with the color corrections.
4 Citations
15 Claims
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1. A method of printing a three-dimensional (3D) color object using materials having at least some transparency, layer-by-layer, the method comprising:
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obtaining a 3D CAD file defining a 3D geometry and a color texture for said color object; dividing said 3D geometry into a core and a color shell; dividing said color shell into volumetric regions; based on a look up table (LUT), assigning each of said regions with an arrangement of voxels in a color stack that results in an optimal reproduction of the requested color; based on said 3D geometry, determining conflicting instances in which the color stack of one region interferes with a color stack of another region; in case of conflict between color stacks, applying a color correction; and printing said 3D color object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification