Determining halftone schemes
First Claim
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1. A method comprising:
- obtaining data representing a three-dimensional object, the data comprising object model data representing the geometry of the three-dimensional object and object property data representing at least one object property of at least a portion of the object;
determining if a halftone scheme dependent object property is specified by the object property data, wherein a halftone scheme dependent object property is an object property the representation of which in an object generated using control data is dependent on selection of an appropriate halftone scheme to generate control data;
determining a halftone scheme;
associating data representing a portion of the object having a halftone scheme dependent object property with a determined halftone scheme.
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Abstract
Methods and apparatus of determining a halftone scheme are described. In an example, data representing a three-dimensional object is obtained, the data comprising object model data representing the geometry of the three-dimensional object and object property data representing at least one object property of at least a portion of the object. It is determined if a halftone scheme dependent object property is specified by the object property data and a halftone scheme is determined. Data representing a portion of the object having a halftone scheme dependent object property is associated with a determined halftone scheme.
21 Citations
15 Claims
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1. A method comprising:
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obtaining data representing a three-dimensional object, the data comprising object model data representing the geometry of the three-dimensional object and object property data representing at least one object property of at least a portion of the object; determining if a halftone scheme dependent object property is specified by the object property data, wherein a halftone scheme dependent object property is an object property the representation of which in an object generated using control data is dependent on selection of an appropriate halftone scheme to generate control data; determining a halftone scheme; associating data representing a portion of the object having a halftone scheme dependent object property with a determined halftone scheme. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. Processing apparatus, comprising:
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an interface to receive data representing a three-dimensional object, the data comprising object model data and object property data; a halftone module to analyse the object property data and to determine a halftone scheme for generating control data for at least a portion of the object based on the analysis; a mapping module to map the received data to a print material coverage representation relating to object property data of a portion of the object; and a control data module to apply halftoning according to the halftoning scheme determined for that portion to the print material coverage representation to generate control data for generating the portion of the three-dimensional object. - View Dependent Claims (9, 10, 11, 12)
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13. A non-transitory computer readable storage medium encoded with instructions, executable by a processor, comprising:
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instructions to determine, for a plurality of object properties specified in data representing a three-dimensional object to be generated by an additive manufacturing apparatus, if generation of an object property is dependent on use of a particular halftone scheme and, if so, to determine a ranking of the object properties; instructions to determine if an object property may be generated by more than one halftone scheme, and, if so, to determine a ranking for the halftone schemes based on their effectiveness in generating the object property. - View Dependent Claims (14, 15)
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Specification