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公开(公告)号：US11892351B2
公开(公告)日：2024-02-06
申请号：US17855133
申请日：2022-06-30
Applicant: DATACOLOR INC.
Inventor： Zhiling Xu , William Bishop
CPC classification number: G01J3/28 , G01J3/0297
Abstract: In the disclosure provided herein, the described apparatus, systems and methods are directed to compensation of errors caused by the difference between the specular port and the sphere in a sphere-based color-measurement instrument, and improvement of the performance of the instrument. In one or more implementations, described approaches eliminate the need for hardware replacement, and therefore reduce costs associated with the operation of color measurement instruments.
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公开(公告)号：US20240003742A1
公开(公告)日：2024-01-04
申请号：US17855133
申请日：2022-06-30
Applicant: DATACOLOR INC.
Inventor： Zhiling Xu , William Bishop
CPC classification number: G01J3/28 , G01J3/0297
Abstract: In the disclosure provided herein, the described apparatus, systems and methods are directed to compensation of errors caused by the difference between the specular port and the sphere in a sphere-based color-measurement instrument, and improvement of the performance of the instrument. In one or more implementations, described approaches eliminate the need for hardware replacement, and therefore reduce costs associated with the operation of color measurement instruments.
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公开(公告)号：US20220099564A1
公开(公告)日：2022-03-31
申请号：US17034873
申请日：2020-09-28
Applicant: DATACOLOR INC.
Inventor： Zhiling Xu
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.
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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
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.
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公开(公告)号：US10591354B1
公开(公告)日：2020-03-17
申请号：US16174746
申请日：2018-10-30
Applicant: DATACOLOR INC.
Inventor： Zhiling Xu
Abstract: A color measurement system is provided that includes an integrating sphere having at least one specular component included (SCI) sensor configured to output a signal in response to light incident thereupon and at least one specular component excluded (SCE) sensor configured to output a signal in response to light incident thereupon, a sample port, a SCE port, a light source configured to direct a beam of light into the sphere and provide illumination at the sample port and a specular component excluded port. The system also includes a processor having a memory and configured by code to activate the light source so as to cause a beam of light to be directed into the sphere and provide illumination to the sample port. The processor is also configured to receive a signal output by the SCI sensor and a signal output by the SCE sensor. Furthermore, the processor is configured to obtain at least one measurement coefficient value and generate a corrected SCE measurement value using at least the SCI sensor value, the SCE sensor value and the obtained measurement coefficient. The processor is configured to output at least the corrected SCE measurement value and the SCI measurement value.
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Patent Agency Ranking
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
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.
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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.
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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
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.
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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
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.
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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
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.
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