公开(公告)号：US20230206518A1

公开(公告)日：2023-06-29

申请号：US17927856

申请日：2021-05-28

Applicant: COLOR GRAIL RESEARCH

Inventor： Franck Philippe HENNEBELLE ,  Rémi VAUCLIN

IPC: G06T11/00

CPC classification number: G06T11/006 ,  G06T2211/416

Abstract: Disclosed is a method for reconstructing a matrix image representative of a static scene under predetermined lighting conditions, including: —acquiring images, captured by a sensor using a lighting which is separate from one image to another; and —reconstructing the matrix image, in a reconstruction space separate from a native spectral space of the sensor, by determining, for each pixel, the spectral components by weighted combination of the spectral components of the native spectral space of the image sensor, the spectral components being photometrically adjusted and associated with the same pixel of each image of the captured images. the weighting is obtained by solving a linear equation system having at least the following parameters: a predetermined value matrix associated with the predetermined lighting conditions, a matrix representative of both the spectral response of the sensor and the spectral distribution of each lighting applied to each captured image.

公开(公告)号：US09412058B2

公开(公告)日：2016-08-09

申请号：US14415747

申请日：2013-07-17

Applicant: COLOR GRAIL RESEARCH

Inventor： Franck Hennebelle

IPC: G06K19/00 ,  G06K19/06 ,  H03M7/30 ,  G06K7/12

CPC classification number: G06K19/0614 ,  G06K7/12 ,  G06K19/06056 ,  H03M7/3059

Abstract: The present invention relates to a method for encoding the color of an object in multispectral form by adaptive compression, characterized in that said method comprises the following steps: determining an identifier of the color in the form of a logistics-dedicated code and having a European Article Numbering (EAN), Universal Product Code (UPC), or Domain Name System (DNS) distributed management structure; inserting a marker at the beginning of said code indicating that the code is a color code, as well as the type of storage; and creating a color encoding that can be interpreted by both a human being and a computer by being directly read, in the form of three elements, i.e. a sample of the color or of texture, a name, and a barcode/chip, using said code and the marker, which provides access to the bidirectional spectral reflectance of the color stored either locally or on a network, or both locally and on a network, and having a rendering model that is predetermined by said marker. The present invention likewise relates to an associated decoding method.

Abstract translation: 本发明涉及一种用于通过自适应压缩对多光谱形式的对象的颜色进行编码的方法，其特征在于，所述方法包括以下步骤：以物流专用代码的形式确定颜色的标识符并具有欧洲 商品编号（EAN），通用产品代码（UPC）或域名系统（DNS）分布式管理结构; 在所述代码的开始处插入标记，指示代码是颜色代码以及存储的类型; 并且通过以三个元素的形式即即颜色或纹理的样本，名称和条形码/芯片直接读取，可以通过人和计算机来解释颜色编码，使用所述 代码和标记，其提供对在本地或网络上存储的颜色的双向光谱反射率的访问，或者本地和网络上存在的两者以及具有由所述标记预定的渲染模型的访问。 本发明同样涉及相关的解码方法。

公开(公告)号：US20150178611A1

公开(公告)日：2015-06-25

申请号：US14415747

申请日：2013-07-17

Applicant: COLOR GRAIL RESEARCH

Inventor： Franck Hennebelle

IPC: G06K19/06 ,  G06K7/12

CPC classification number: G06K19/0614 ,  G06K7/12 ,  G06K19/06056 ,  H03M7/3059

Abstract: A method for encoding the color of an object in multispectral form by adaptive compression, includes the following steps: determining an identifier of the color in the form of a logistics-dedicated code and having a European Article Numbering, Universal Product Code, or Domain Name System distributed management structure; inserting a marker at the beginning of the code indicating that it is a color code, and the type of storage; and creating a color encoding that can be interpreted by both a human being and a computer by being directly read, in the form of three elements, a sample of the color or texture, a name, and a barcode/chip, using the code and the marker, which provides access to the bidirectional spectral reflectance of the color stored either locally and/or on a network, and having a rendering model that is predetermined by the marker. The associated decoding method is also described.

Abstract translation: 通过自适应压缩对多光谱形式的对象颜色进行编码的方法包括以下步骤：以物流专用代码的形式确定颜色的标识符，并具有欧洲商品编号，通用商品代码或域名 系统分布式管理结构; 在代码开头处插入一个标记，指示它是一个颜色代码，以及存储类型; 并且通过以三个元素的形式直接以颜色或纹理的样本，名称和条形码/芯片直接读取人和计算机来解释的颜色编码，使用代码和 标记，其提供对本地和/或网络上存储的颜色的双向光谱反射率的访问，以及具有由标记预定的渲染模型。 还描述了相关联的解码方法。

公开(公告)号：US20180284020A1

公开(公告)日：2018-10-04

申请号：US15764603

申请日：2016-09-30

Applicant: COLOR GRAIL RESEARCH

Inventor： Rémi VAUCLIN ,  Franck HENNEBELLE

IPC: G01N21/55 ,  G01N21/31

CPC classification number: G01N21/55 ,  G01J3/10 ,  G01J2003/425 ,  G01N21/31 ,  G01N2201/0221 ,  G01N2201/0616 ,  G01N2201/0696

Abstract: Disclosed is a method for determining the reflectance of an object, the method including a step of solving an equation having several unknowns, the equation being obtained from formed images, the reflectance of the object and the illumination of the external light source being two unknowns of the equation. The step of solving the equation includes: calculating solution points of the equation, interpolating the calculated points by way of an interpolation function, and using at least one of the following approximations to solve the equation: a first approximation according to which each image is derived from the emission of a separate light flash, a second approximation according to which the interpolation function determines the stability points of the equation.

公开(公告)号：US10429298B2

公开(公告)日：2019-10-01

申请号：US15764603

申请日：2016-09-30

Applicant: COLOR GRAIL RESEARCH

Inventor： Rémi Vauclin ,  Franck Hennebelle

IPC: G01N21/55 ,  G01J3/10 ,  G01N21/31 ,  G01J3/42

Abstract: Disclosed is a method for determining the reflectance of an object, the method including a step of solving an equation having several unknowns, the equation being obtained from formed images, the reflectance of the object and the illumination of the external light source being two unknowns of the equation. The step of solving the equation includes: calculating solution points of the equation, interpolating the calculated points by way of an interpolation function, and using at least one of the following approximations to solve the equation: a first approximation according to which each image is derived from the emission of a separate light flash, a second approximation according to which the interpolation function determines the stability points of the equation.