Abstract:
The invention relates to a method for generating calibrated color data of a target using color measurement instruments distributed in the network comprising the steps A) generating at least one standard instrument profile for the color measurement instruments distributed in the network to correct photometric and wavelength scale differences, and B) generating at least one geometry instrument profile for the color measurement instruments distributed in the network to correct geometry scale differences. The method can be used in applications where color measurement instrument networks are used, particularly in robotic systems where color measurement instruments are integrated.
Abstract:
A method that includes obtaining, using a processor, image data from a target coating. The method also includes performing, using the processor, an image analysis to determine at least one sparkle point from the image data, and performing, using the processor, a hue analysis to determine a sparkle color from the sparkle point. The method further includes calculating, using the processor, a sparkle color distribution, and generating, using the processor, a coating formulation that is the same or substantially similar in appearance to the target coating.
Abstract:
An apparatus and method for customized hair-coloring is disclosed. In some embodiments the method comprises: a. performing a plurality of light-scattering measurements upon a sample of hair such that for each light-scattering measurement, the sample of hair is illuminated from a different respective direction; b. comparing the results of the light-scattering measurements; c. in accordance with results of the comparing, computing an initial damage-state of hair of the sample by comparing the results of the light-scattering measurements; d. obtaining an initial color-state of the hair of the sample; and e. computing a hair-coloring composition that is predicted to transform the hair sample from the initial color-state to a target color-state such that in response to a determining of a greater (lesser) extent of initial damage, a concentration of artificial- colorant(s) within the computed coloring composition is reduced (increased).
Abstract:
Ein Farbmessgerät umfasst eine Messanordnung (MA), die eine Mehrzahl von Beleuchtungsanordnungen (20, 30, 40) zur Beaufschlagung eines Messflecks (MF) eines Messobjekts (MO) mit Beleuchtungslicht in je einer realen Beleuchtungsrichtung (2, 3, 4) und eine Aufpickanordnung (50) zur Erfassung des vom Messfleck (MF) unter einer realen Beobachtungsrichtung (5) zurückgestrahlten Messlichts und zur Umwandlung desselben in vorzugsweise spektrale Reflexionsfaktoren sowie eine Steuerung für die Beleuchtungsanordnungen und die Aufpickanordnung und für die Verarbeitung der von der Aufpickanordnung erzeugten elektrischen Signale umfasst. Die Steuerung ist dazu ausgebildet, die gemessenen Reflexionsfaktoren anhand eines Korrekturmodells so zu verarbeiten, dass durch Winkelfehler der Beleuchtungsanordnungen und/oder der Aufpickanordnung gegenüber nominellen Beleuchtungs- bzw. Beobachtungsrichtungen verursachte Messwertverfälschungen korrigiert werden.
Abstract:
A computer implemented method. The method includes obtaining, using a processor, reflectance data from a target coating and calculating, using the processor, a reflectance from the data, wherein calculating comprises performing a calculation using a radiative transfer equation. The method also includes generating, using the processor and based on the reflectance, a coating formulation that is the same or substantially similar in appearance to the target coating.
Abstract:
A computer implemented method. The method includes generating, using a processor, a multi-dimensional object from a plurality of data obtained from a spectrophotometric measurement of a target coating. The method also includes calculating, using the processor, at least one geometric property of the multi-dimensional object. The method further includes correlating, using the processor, the at least one value with a plurality of known values to identify at least one pigment effect in the target coating, and outputting, using the processor, the at least one pigment effect.
Abstract:
An evaluation method of a coating color is a method of evaluating a coating color of a coating material containing a color pigment and an effect pigment, the method including: measuring a spectral reflectance of a coating film of the coating material; and calculating C*/L*, which is a ratio of chroma C* to lightness L* in the L*C*h color space, from the spectral reflectance.
Abstract:
An evaluation method of a coating color is a method of evaluating a coating color of a coating material containing a color pigment and an effect pigment, the method including: measuring a spectral reflectance of a coating film of the coating material; and calculating C*/L*, which is a ratio of chroma C* to lightness L* in the L*C*h color space, from the spectral reflectance.
Abstract translation:涂色的评价方法是评价含有着色颜料和效果颜料的涂料的涂布颜色的方法,该方法包括:测定涂料的涂膜的光谱反射率; 并计算L * C * h色彩空间中色度C *与亮度L *的比值C * / L *与光谱反射率的关系。
Abstract:
A multi-angle colorimeter (100) employs a multi-angle mode and a symmetrical arrangement mode in an optical arrangement. Light detection on both sides of the symmetrical arrangement is performed by a single photodetector unit (41). The photodetector unit (41) is used on both sides, and thus, the device becomes simpler, without any impact on individual difference in characteristics of multiple photodetector units. Conversely, elements for illumination can be used on both sides. Also in a case where multiple photodetector units are used, the size and cost of the device can be reduced with the use of a photodetector unit having a relatively low wavelength resolution as a photodetector unit to be used on one side. This enables to reduce an attitude error due to relative tilting of a measurement surface while reducing the size and cost of the device.
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.