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公开(公告)号：US10728423B2
公开(公告)日：2020-07-28
申请号：US16616461
申请日：2017-07-24
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Peter Morovic , Jan Morovic , Jordi Arnabat Benedicto , Javier Maestro Garcia
Abstract: Methods for printer color calibration are disclosed. A nominal Neugebauer Primary area coverage (NPac) vector from an NPac space is then determined from a color mapping, the nominal NPac vector corresponding to a given color value in a color space. One or more colorant calibration factors each associated with a color of colorant are received; the calibration factors representing operational characteristics of the printer. One or more optimization metrics for constraining desired properties of an objective calibrated NPac vector to be generated are also received. The calibrated NPac vector is generated based on the nominal NPac vector such that: the generated calibrated NPac vector is convex; and for each given color of colorant the usage of colorant associated with the generated calibrated NPac vector is equal to the product of usage of colorant associated with the nominal NPac vector; and the calibration factor for the given color of colorant.
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公开(公告)号：US20200210790A1
公开(公告)日：2020-07-02
申请号：US16632440
申请日：2017-09-18
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Javier Maestro Garcia , Jordi Arnabat Benedicto , Peter Morovic , Jan Morovic
IPC: G06K15/02
Abstract: Certain examples described herein relate to printer calibration. In certain cases, measurement data is received, the measurement data indicative of an adjustment to be applied to a given colorant in a set of colorants printable by a printing system. In certain examples, a Neugebauer primary area coverage (NPac) vector comprising an area coverage of a first Neugebauer primary (NP) is obtained. Based on the received measurement data, the NPac vector is adjusted by decreasing the area coverage in the NPac vector of the first NP and increasing an area coverage in the NPac vector of a second NP. The first NP and the second NP correspond to colorant combinations that differ by a predetermined amount of the given colorant.
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公开(公告)号：US10688774B2
公开(公告)日：2020-06-23
申请号：US15564411
申请日：2015-07-15
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Jan Morovic , Peter Morovic , Jay S. Gondek , William J. Allen
IPC: B33Y50/02 , B29C64/386 , G06F30/00 , G05B19/4099 , G06T17/20 , H04N1/405
Abstract: Certain examples described herein relate to the preprocessing of object data for the manufacture of a three-dimensional object. In one case, the object data represents at least a first and a second object portion, the first object portion being associated with a first production material composition and the second object portion being associated with a second production material composition. The first and the second object portions may be arranged such that they comprise a contiguous interface. In certain described cases, the object data is modified by modulating the contiguous interface. Said modulating the contiguous interface may comprise modulating data defining at least one of the first and the second object parts such that a portion of at least one of the first and second production material compositions extends into object space occupied by a respective one of the second and first object parts. The resultant modified object data may be used to manufacture the three-dimensional object.
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公开(公告)号：US10688727B2
公开(公告)日：2020-06-23
申请号：US15545249
申请日：2015-01-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Juan Manuel Garcia Reyero Vinas , Peter Morovic , Jan Morovic
IPC: B29C64/393 , G05B19/4099 , B33Y50/02
Abstract: Methods and apparatus associated with three-dimensional objects are described. In an example, a method comprises receiving data representing a three-dimensional model object, the data comprising object model data and object property data. For at least one object property, a sub-region of the object in which the object property is non-variable is identified and, for at least one location within the object, all sub-regions in which the location is situated are identified. Based on the combination of identified sub-regions for a location, print material data is determined for the location. Control data for the production of a three-dimensional object is generated according to the print material data.
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公开(公告)号：US20200059572A1
公开(公告)日：2020-02-20
申请号：US16476494
申请日：2017-04-21
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Jan Morovic , Peter Morovic
IPC: H04N1/60
Abstract: In an example, a method includes determining a plurality of print coverage vectors, each of the print coverage vectors specifying a common amount of a selected print agent. The method may further comprise determining a colorimetry provided by each of the print coverage vectors and dividing a range of colorimetries into partitions in a colorimetric space. For each of a plurality of the partitions, the method may include determining a characteristic of each print coverage vector resulting in a colorimetry within that partition and selecting a print coverage vector for that partition based on the determination. A color mapping resource may be determined based on the selected print coverage vectors.
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Patent Agency Ranking
公开(公告)号：US20200045207A1
公开(公告)日：2020-02-06
申请号：US16339303
申请日：2017-02-15
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Peter Morovic , Jan Morovic
Abstract: An example method of linearizing print outputs for a printing system is described. The method involves retrieving a look-up table comprising a plurality of nodes that map input space values to Neugebauer Primary Area Coverage vectors. The printing system is used to print a set of ramps, each ramp comprising a plurality of test areas. The test areas for each ramp are defined by varying vector element values corresponding to input space values that vary in a dimension of the input space. A property of each of the printed test areas is measured and a linearization function is determined based on those measured properties. The linearization function is then applied to the input space values for the plurality of nodes in the look-up table.
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公开(公告)号：US10542182B2
公开(公告)日：2020-01-21
申请号：US14906051
申请日：2013-07-19
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Peter Morovic , Jan Morovic , Juan Manuel Garcia Reyero
Abstract: Defining color separation for printing an image is disclosed. A color separation model is created. The model comprises a separation hypercube, wherein each axis of the separation hypercube represents a metric of the printing process and each vertex of the separation hypercube at each end of each axis represents the optimized separation of each metric. A weighting for at least one of the metrics represented by the created color separation model is determined. The determined weighting is applied to each of the vertices of the created color separation model to determine new vertices. A new color separation model based on the determined new vertices is created.
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公开(公告)号：US10523847B2
公开(公告)日：2019-12-31
申请号：US15760788
申请日：2016-01-29
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Jan Morovic , Peter Morovic
Abstract: In an example, a method includes characterising, using at least one computer, an initial gamut from an initial set of color mappings from a source color space to a printing device color space. The method may further include characterising, using at least one computer, an initial gamut from an initial set of color mappings from a source color space to a printing device color space. The method may further include characterising, using the at least one computer, a printing device color gamut. The method may further include transforming, using the at least one computer, the initial set of color mappings to form a transformed set of color mappings mapping from the source color space to the printing device color gamut.
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公开(公告)号：US20190275739A1
公开(公告)日：2019-09-12
申请号：US16335158
申请日：2016-09-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Jan Morovic , Peter Morovic
IPC: B29C64/386 , G06K15/00 , G06K15/02 , B33Y50/00 , G05B19/4097
Abstract: In an example, a method includes identifying, within data for use in printing, a first element set associated with a first print addressable area, wherein elements of the element set are each associated with a print instruction. An element may be selected from the first element set and assigned to the first print addressable area. A second print addressable area may be identified as a candidate print addressable area for error diffusion, the second print addressable area being associated with a second element set. An error associated with the selection of the element from the first element set is scaled based on a criterion and may be diffused to elements of the second element set.
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公开(公告)号：US20190251405A1
公开(公告)日：2019-08-15
申请号：US16327718
申请日：2016-10-25
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Peter Morovic , Jan Morovic , Jordi Arnabat Benedicto , Joan Vidal
CPC classification number: G06K15/186 , G06K15/02 , G06K15/1822 , G06K15/1823 , H04N1/00005
Abstract: A method is described in which printing instructions representing printing content to be printed by a printing system are received, the printing system comprising a dispenser to dispense printing material. Whether to perform a first mapping process or a second mapping process is then selected. The first mapping process comprises mapping an indicator to a first dispensing process to dispense printing material from the dispenser to produce content according to a content characteristic of the printing content at a given location, and the second mapping process comprises mapping the indicator to a second dispensing process to dispense printing material to produce content according to the content characteristic at the given location. The first dispensing process is different than the second dispensing process. The indicator represents the content characteristic. The method also comprises performing the selected mapping process.
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