公开(公告)号：US10928251B2

公开(公告)日：2021-02-23

申请号：US16673405

申请日：2019-11-04

Applicant: DATACOLOR INC.

Inventor： Taeyoung Park ,  Hong Wei ,  Zhiling Xu ,  Venkata R. Thumu

IPC: G01J3/02 ,  G01J3/52 ,  G01J3/46

Abstract: Embodiments of the present invention are directed towards systems, methods and computer program products for correcting inter-instrumentation variation among color measurement devices. In one particular implementation, a method for correcting inter-instrument variation among color measurement devices includes obtaining a set of color measurements of an item under analysis. The described approach also includes accessing a conversion model, wherein the conversion module has been generated using one or more ANN back propagated over a collection of data points, where the data points correspond to measurements of a color standard using devices from a control device batch and a test device batch. Using the conversion module, a processor is configured to transform the set of color measurements into a calibrated color measurement set. The calibrated color measurement set is then output to at least one display, memory or remote computing device.

公开(公告)号：US10444074B1

公开(公告)日：2019-10-15

申请号：US15939044

申请日：2018-03-28

Applicant: Datacolor Inc.

Inventor： Zhiling Xu ,  Hong Wei ,  Taeyoung Park

IPC: G01J3/46 ,  G01N21/25 ,  G06F17/16

Abstract: A method and a system are provided to measure transmittance or reflectance of a color specimen by using a transformation matrix obtained from the measurement values of a series of known transmittance or reflectance calibration color standards and multiple flashes from different illumination sources. A color spectrum can be determined with reduced error by calculating the reflectance spectra of an object using measurement matrices obtained under at least two illuminants and the transformation matrix.