Calibrating color measurement devices

    公开(公告)号:US20220224818A1

    公开(公告)日:2022-07-14

    申请号:US17146179

    申请日:2021-01-11

    Applicant: DATACOLOR INC.

    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.

    Color separation in images
    2.
    发明授权

    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.

    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.

    SPECTRUM RECOVERY IN A SAMPLE
    3.
    发明申请

    公开(公告)号:US20190301940A1

    公开(公告)日:2019-10-03

    申请号:US15939044

    申请日:2018-03-28

    Applicant: Datacolor Inc.

    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.

    Matching two color measurement devices using artificial neural network

    公开(公告)号:US11922662B2

    公开(公告)日:2024-03-05

    申请号:US17087279

    申请日:2020-11-02

    Applicant: DATACOLOR INC.

    Inventor: Hong Wei

    Abstract: In one or more implementations, the apparatus, systems and methods disclosed herein are directed to configuring a color measurement device to output color measurements that match the expected output of a different color measurement device. In a particular implementation, a method is provided for matching the color measurements made by a color measurement device to the color measurements made by a target color measurement device by implementing a single step color calibration and conversion process using an Artificial Neural Network (ANN). By way of non-limiting example, the raw counts from the color measurement device is converted to a specific color space, such as L*a*b, directly through an ANN. Such ANN is trained to ensure the output of the color measurement from the color measurement device will match with the output of the color measurement from a target color measurement device.

    MATCHING TWO COLOR MEASUREMENT DEVICES USING ARTIFICIAL NEURAL NETWORK

    公开(公告)号:US20220138986A1

    公开(公告)日:2022-05-05

    申请号:US17087279

    申请日:2020-11-02

    Applicant: DATACOLOR INC.

    Inventor: Hong Wei

    Abstract: In one or more implementations, the apparatus, systems and methods disclosed herein are directed to configuring a color measurement device to output color measurements that match the expected output of a different color measurement device. In a particular implementation, a method is provided for matching the color measurements made by a color measurement device to the color measurements made by a target color measurement device by implementing a single step color calibration and conversion process using an Artificial Neural Network (ANN). By way of non-limiting example, the raw counts from the color measurement device is converted to a specific color space, such as L*a*b, directly through an ANN. Such ANN is trained to ensure the output of the color measurement from the color measurement device will match with the output of the color measurement from a target color measurement device.

    SYSTEM AND METHOD FOR COLOR CORRECTION OF A MICROSCOPE IMAGE WITH A BUILT-IN CALIBRATION SLIDE
    7.
    发明申请
    SYSTEM AND METHOD FOR COLOR CORRECTION OF A MICROSCOPE IMAGE WITH A BUILT-IN CALIBRATION SLIDE 有权
    使用内置校准幻灯片对显微镜图像进行颜色校正的系统和方法

    公开(公告)号:US20140300725A1

    公开(公告)日:2014-10-09

    申请号:US13856727

    申请日:2013-04-04

    CPC classification number: G02B21/06 G02B5/201 G02B21/34 G02B21/365

    Abstract: A system and method are disclosed for correcting the color of microscope images for different illuminants. The system includes a microscope having at least one image setting value selector with a plurality of pre-set positions, and an optical train having a distal end and a proximal end and being configured to convey illumination. The optical train is further configured to allow introduction of a calibration slide into the optical train of the microscope at a plurality of possible positions, each position being a conjugate plane of the sample plane, when the sample is in focus. The calibration slide incorporates an integral transmission filter array of known transmission values.

    Abstract translation: 公开了用于校正不同光源的显微镜图像的颜色的系统和方法。 该系统包括具有至少一个具有多个预设位置的图像设定值选择器的显微镜,以及具有远端和近端并被配置为传送照明的光学列车。 光学系统进一步构造成允许在多个可能的位置将校准载玻片引入到显微镜的光学系列中,每个位置都是样品平面的共轭平面。 校准滑块包含已知传输值的整体传输滤波器阵列。

    Method and apparatus for color lookup using a mobile 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

    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.

    Calibrating color measurement devices

    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.

    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.

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