公开(公告)号：US20220065781A1

公开(公告)日：2022-03-03

申请号：US17008356

申请日：2020-08-31

Applicant: DATACOLOR INC.

Inventor： Zhiling Xu ,  Bill Binder ,  Venkata R. Thumu

IPC: G01N21/57

Abstract: As described herein, a method has been developed to estimate the gloss of a black or dark sample using a color measurement system. In such a system, when measuring a higher gloss sample, more illumination light reflected from the sample surface will be directed away from the receiving sensor, and thus less signal will be detected. Using a derived sensor-signal to surface-gloss relationship, the surface gloss of a sample can be calculated by applying the measurements of the sample to the signal to gloss relationship to obtain a more accurate gloss measurement of a sample under analysis.

公开(公告)号：US10768098B2

公开(公告)日：2020-09-08

申请号：US16428490

申请日：2019-05-31

Applicant: DATACOLOR INC.

Inventor： Zhiling Xu

IPC: G01J3/46 ,  G01N21/27 ,  G01N21/25

Abstract: A method and a system are provided for obtaining improved spectra recovery results of a measurement of a sample through the use of a calibration matrix obtained from calibration measurement values using at least one illumination source. By calculating the reflectance spectrum of a collection of calibration samples across several rounds of measurements and cascading the results, an improved calibration matrix can be used to convert the sample measurement values to more accurate results.

公开(公告)号：US10564036B2

公开(公告)日：2020-02-18

申请号：US15895519

申请日：2018-02-13

Applicant: DATACOLOR INC.

Inventor： Taeyoung Park ,  Hong Wei ,  Venkata R. Thumu ,  Kathleen A. Edwards

IPC: G01J3/28 ,  G06T7/90 ,  G06T7/00 ,  G01J3/50 ,  G01J3/02 ,  G06T7/11

Abstract: Systems, methods and computer program products for segmenting colors in a sample image comprised of pixels using a processor configured by code executing for selecting at least one color value present within the sample image and for each color selected from the sample image comparing the color values of each pixel of the sample image to the selected color value and averaging the color values of each pixels of the sample image having a color value difference below a pre-determined threshold. The method also includes outputting the average color value as a color value data object; and associating each averaged color value with sample image.

公开(公告)号：US20250003875A1

公开(公告)日：2025-01-02

申请号：US18344085

申请日：2023-06-29

Applicant: DATACOLOR INC.

Inventor： Zhiling Xu

IPC: G01N21/57

Abstract: When a light beam hits an opaque sample, the sample will reflect light towards various directions with various intensities back into the 2π hemisphere above the sample plane. Bidirectional Reflectance Distribution Function (BRDF) can be used to describe such a property of the sample. A hemi-spherical screen is used to collect the light in the 2π hemisphere, and a pin-hole imaging system can be used to map the intensity of light distributed in the 2π hemisphere into a 2-dimensional image. From this 2-dimensional image, the BRDF of the sample material can be obtained.

公开(公告)号：US12007282B2

公开(公告)日：2024-06-11

申请号：US17687005

申请日：2022-03-04

Applicant: DATACOLOR INC.

Inventor： Michael H. Brill ,  Zhiling Xu ,  Kathleen A. Edwards

IPC: G01J3/52 ,  G01J3/50

CPC classification number: G01J3/524 ,  G01J3/501

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.

公开(公告)号：US11740132B2

公开(公告)日：2023-08-29

申请号：US16591088

申请日：2019-10-02

Applicant: Datacolor, Inc.

Inventor： Hong Wei ,  Sachin Deshpande ,  Taeyoung Park

IPC: G01J3/50 ,  G01J3/52 ,  G06T11/00

CPC classification number: G01J3/501 ,  G01J3/52 ,  G06T11/001

Abstract: A processing system of a mobile device acquires an image of an object of a target color, wherein the image was captured by an integrated digital camera of the mobile device, calculates a first plurality of values that describes the target color, and wherein the calculating is based on an analysis of a pixel of the image, and identifies a first candidate color from among a plurality of candidate colors, wherein each candidate color in the plurality of candidate colors is associated with a second set of values that describes the each candidate color, and wherein the second set of values describing the first candidate color matches the first set of values more closely than any second set of values associated with another candidate color of the plurality of candidate colors.

公开(公告)号：US11582398B2

公开(公告)日：2023-02-14

申请号：US17146179

申请日：2021-01-11

Applicant: DATACOLOR INC.

Inventor： Hong Wei ,  Heath Barber

IPC: H04N5/235 ,  G01J3/52 ,  G06N3/08 ,  G01J3/50

Abstract: In one or more implementations, the apparatus, systems and methods disclosed herein are directed to calibrating a smart phone with an arbitrary phone case for color lookup applications, wherein the calibration process includes obtaining, with the smartphone without the case equipped, a first measurement data set that includes at least one measurement of each of a black, white and grey calibration target; obtaining, with the smartphone with the case equipped, at least three exposure measurements of a white calibration target at least three different exposure times; calculating an optimized exposure time using at least the at least three exposure measurements; obtaining, with the smartphone with the case equipped, a second measurement data set that includes at least one measurement of each of a black, white and grey calibration target at the optimized exposure time; generating fitting parameters from the first and second measurement datasets; and storing the generated fitting parameters and optimized exposure time in at least one of a local or remote data storage device.

公开(公告)号：US11340156B2

公开(公告)日：2022-05-24

申请号：US17034873

申请日：2020-09-28

Applicant: DATACOLOR INC.

Inventor： Zhiling Xu

IPC: G01N21/27 ,  G06F17/16 ,  G01N21/25 ,  G01N21/31

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：US20210131874A1

公开(公告)日：2021-05-06

申请号：US16668879

申请日：2019-10-30

Applicant: DATACOLOR INC.

Inventor： Zhiling Xu

IPC: G01J3/52 ,  G01J3/46 ,  G06N3/08

Abstract: A system including a processor and a memory configured to store code executed by the processor is provided. In one or more implementations, the processor is configured by the code to calibrate measurements made by color measurement devices. In one particular implementation, the processor receives a measurement dataset of one or more color values, for a sample obtained by a color measurement device. The processor is configured to convert the measurement dataset to a standard space measurement dataset using a standard space measurement model and calculate a color dataset based on the standard space measurement dataset using a color conversion model. The processor is further configured to output the calculated color dataset to at least one of a display, database or local memory store.

公开(公告)号：US10748304B2

公开(公告)日：2020-08-18

申请号：US15915815

申请日：2018-03-08

Applicant: Datacolor Inc.

Inventor： Zhiling Xu

IPC: G06T7/90 ,  G06K9/46 ,  G06K9/20 ,  G06F16/583

Abstract: A method is provided for identifying colors across illuminants using a processor configured by code executing therein, the method comprising capturing a sample image with an image recording device, the image including pixels resenting a color sample under analysis and a color reference chart. The processor is also configured to execute comparing the color values of pixels representing the color reference chart of the sample image to the pixel values corresponding to a plurality of entries within a plurality of color reference datasets to determine the color reference having the closest match of sample captured in the image. The reference identifier of the color that is the closest match to the sample is then output for further use.