公开(公告)号：WO2022067221A1

公开(公告)日：2022-03-31

申请号：PCT/US2021/052277

申请日：2021-09-28

Applicant: DATACOLOR INC.

Inventor： XU, Zhiling

IPC: G01N21/27

Abstract: A method has been developed to improve the stability of a color measurement system that measures reflectances using matrix-transformation method. The transformation matrix can be obtained by training with a raw measurement matrix and a master reflectance matrix. The raw measurement matrix can be stacked with one or more of its variations, with each variation being some random noise added onto a part or the whole original raw signal matrix. The same number of master reflectance matrices are also stacked to match the size and sample ordering of the raw measurement matrix. The resulting transformation matrix will be more stable and less sensitive to the measurement noise.

公开(公告)号：WO2020069273A1

公开(公告)日：2020-04-02

申请号：PCT/US2019/053389

申请日：2019-09-27

Applicant: DATACOLOR INC.

Inventor： PARK, Taeyoung ,  WEI, Hong ,  XU, Zhiling ,  THUMU, Venkata R.

IPC: G01J3/52 ,  G01J3/46 ,  G01J3/02

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：EP4196768A1

公开(公告)日：2023-06-21

申请号：EP21873621.3

申请日：2021-09-28

Applicant: Datacolor, Inc.

Inventor： XU, Zhiling

IPC: G01N21/27

公开(公告)号：EP4303546A1

公开(公告)日：2024-01-10

申请号：EP23159902.8

申请日：2023-03-03

Applicant: Datacolor, Inc.

Inventor： BRILL, Michael H. ,  XU, Zhiling ,  EDWARDS, Kathleen A.

IPC: G01J3/02 ,  G01J3/10 ,  G01J3/50 ,  G01J3/52

Abstract: A method has been developed to monitor the aging of an illuminator (such as a lamp) and the interior sphere wall in a sphere-based color measurement instrument. This monitoring process or method is configurable to independently monitor the aging of the illuminator as well as the aging of the interior surface of a color measurement device using standard calibration measurements already present in the color measurement device.