Abstract:
Methods for generating a customized spectral profile, which can be used to generate a corresponding filter, lamp or other type of illuminant. A trial spectrum can be generated. A reference spectrum can be determined or otherwise obtained. A SOURCE spectrum can be determined or otherwise obtained. One or more optical indices can be calculated using the trial spectrum and one or more of the optical indices are optimized by varying the trial spectrum to generate the customized spectral profile. A radiation force parameter can be used to minimize unsafe build-up of light in spectral regions. Adaptations of color rendering parameters can be used in the optimization process. Smoothing parameters can be used to enable easier design of filter structures. A reflectance camera can be used to measure reflectance data at one or more pixels of a digital representation of an object to be illuminated.
Abstract:
A method to specify a color selection that allows users to construct verbal color descriptions of desired colors for color modification or correction using various components. These components include a user interface component for creating and combining color selection descriptions using menus or other suitable display techniques, a mapping or classifier component to map menu-items to representative color-samples, a component that translates representative color-samples to a mathematical selection transform and a component that maps a set of test colors through the mathematical selection transform to implement the color selector.
Abstract:
A first color patch printed on a first printing material and a second color patch printed on a second printing material, which match each other in appearance in a desired environment, are acquired. The calorimetric values of a color patch to be measured which is printed on the first printing material are corrected using the calorimetric values of the first and second color patches and a spectrophotometric calorimeter for obtaining calorimetric values in a desired environment, thereby generating effective calorimetric values.
Abstract:
A computer-implemented method for displaying on a color display device a realistic color of a paint coating comprising the following steps: (A) identify L*, a* b* color values at least three different angles for a paint coating from a data base; (B) convert the at least three angle L*, a* b* color values to tristimulus X, Y, Z values; (C) develop continuous function equation for each tristimulus X, Y, Z values vs. aspecular angle via computer implementation and calculate the range of angles to be displayed; (D) calculate a range of aspecular angles required to display the object; (E) calculate R,G,B values from tristimulus values over the range of aspecular angles and determine maximum saturation of R,G,B values and bring into range allowed by color display device; (F) determine statistical texture function of paint coating to be simulated; and (G) apply statistical texture function to the R,G,B values of step (E) and display color pixels on color display device to show realistic color of paint coating.
Abstract translation:一种用于在彩色显示装置上显示涂料涂层的真实颜色的计算机实现的方法,包括以下步骤:(A)从数据库中识别用于涂料涂层的至少三个不同角度的L *,a * b *颜色值 ; (B)将至少三个角度L *,a * b *颜色值转换成三刺激X,Y,Z值; (C)通过计算机实现为每个三刺激X,Y,Z值与相对角度开发连续函数方程,并计算要显示的角度范围; (D)计算显示物体所需的一定范围的斜视角度; (E)在三角刺激值的范围内计算R值,G值,B值,确定R,G,B值的最大饱和度,并进入彩色显示装置允许的范围; (F)确定要模拟的涂料的统计纹理函数; 和(G)将统计纹理函数应用于步骤(E)的R,G,B值,并在彩色显示装置上显示彩色像素,以显示油漆涂层的逼真颜色。
Abstract:
A method for determining the optimal colorant thicknesses and linear combinations for integral illuminant-weighted CIE color-matching filters is provided. A reflectance colorimeter for configuring printers may be designed using this method.
Abstract:
An image processing device includes: a spectral reflectance calculation unit that calculates a spectral reflectance on the basis of intensities of reflection light and irradiation intensities; a color value calculation unit that obtains color values based on the spectral reflectance; a coefficient calculation unit that calculates coefficients respectively for a plurality of predetermined eigenvectors where the color values are expressed by a linear combination between the plurality of predetermined eigenvectors, the coefficients, and spectral energies of at least two types of irradiation light; and an output unit that generates and outputs information corresponding to estimation values within a wavelength range defined by excluding at least one of a low and a high wavelength ranges from the wavelength range including the wavelengths of visible light, among estimation values of the spectral reflectances expressed by linear combination between the respective coefficients calculated by the coefficient calculation unit and the eigenvectors.
Abstract:
A miniaturized spectrometer/spectrophotometer system and methods are disclosed. A probe tip including one or more light sources and a plurality of light receivers is provided. A first spectrometer system receives light from a first set of the plurality of light receivers. A second spectrometer system receives light from a second set of the plurality of light receivers. A processor, wherein the processor receives data generated by the first spectrometer system and the second spectrometer system, wherein an optical measurement of a sample under test is produced based on the data generated by the first and second spectrometer systems.
Abstract:
Embodiments of the present invention recite a method of compiling color analysis parameters. In one embodiment of the present invention, a corrected color description of at least one test subject is constructed. The corrected color description of at least one test subject is then accessed. The at least one test subject is assigned to a classification color according the accessed corrected color description. The classification color is then correlated with a prescriptive recommendation.
Abstract:
A device for determining the surface topology and associated color of a structure, such as a teeth segment, includes a scanner for providing depth data for points along a two-dimensional array substantially orthogonal to the depth direction, and an image acquisition means for providing color data for each of the points of the array, while the spatial disposition of the device with respect to the structure is maintained substantially unchanged. A processor combines the color data and depth data for each point in the array, thereby providing a three-dimensional color virtual model of the surface of the structure. A corresponding method for determining the surface topology and associated color of a structure is also provided.
Abstract:
Color management systems and methods are provided wherein operations associated with an individual color measurement instrument are integrated into system-level operating software. Color measurement-related information associated with or derived from such color measurement instrument, e.g., color measurements, instrument-related messages (e.g., error messages), instrument status and the like, is automatically broadcast to other programs, instruments and/or applications that are adapted/registered to listen for and receive such broadcasts. An operating system program that includes, defines or interacts with an OS notification center facilitates communication with the ancillary programs, instruments or applications. Two way communications by way of the OS notification center are also facilitated.