Abstract:
The invention relates to a method for matching the color of a dry color shade standard, said method comprising the steps of A) Measuring the dry color shade standard, B) Calculating a recipe for the dry color shade standard, C) Generating a virtual wet color shade standard based on the recipe for the dry color shade standard calculated in step B), wherein the virtual wet color shade standard is generated with wet characterisation data and D) Matching the virtual wet color shade standard. The method can be used for elaboration of color shades and batch adjustment in production of paints.
Abstract:
The invention relates to a method for regulating the ink in a printing press, in which a stock (09) is continuously printed in an on-going printing process of the printing press, at least one ink is applied to the stock (09) in several inking zones (22; 22A; 22B; 22C; 22D), a measured value indicating an ink density is determined for the at least one ink applied to the stock (09) in said printing process within the printing press, and a relation is formed between the measured ink density value for a specific ink in a selected inking zone (22; 22B) and a measured ink density value determined for the same ink in at least one other inking zone (22; 22A; 22C). The relation between the measured ink density values in different inking zones (22; 22A; 22B; 22C; 22 D) is formed only if the majority of the inking zones (22; 22A; 22B; 22C; 22D) of a specific inking unit (07) of the printing press supply one respective measured ink density value for an ink supplied by said inking unit (07), said measured ink density value reaching at least a predefined fraction of a preset desired value in the respective inking zone (22; 22A; 22B; 22C; 22D).
Abstract:
A computer-implemented method of color matching a repair paint formula is disclosed. The method includes steps of inputting a color code for a vehicle paint; searching a computer database for formulations associated with the color code; selecting a plurality of the formulations for display; displaying digital images of the selected formulations at a plurality of viewing angles; determining one of the displayed formulations as a best match to the vehicle paint; and identifying the formulation for the best match.
Abstract:
Verfahren zur Herstellung effektpigmenthaltiger Farbrezepturen angepasst an eine Farbvorlage, umfassend die Schritte (a) Erstellen je einer Eichstaffel für jedes im Färbesystem einer effektpigmenthaltigen Farbvorlage enthaltene Pigment, (b) experimentelles Ermitteln der Reflektionswerte R λ der Farbvorlage und der Eichstaffeln, (c) Berechnung der optischen Materialparameter der Farbvorlage und der Bestandteile des Färbesystems, (d) Auswahl einer geeigneten Ausgangsrezeptur, (e) Bestimmung der Restfarbdifferenz zwischen der Ausgangsrezeptur und der Farbvorlage, (f) Erstellen einer ersten angepassten Farbrezeptur (g) und Wiederholung der Schritte (e) und (f), bis eine akzeptable Restfarbdifferenz zwischen der angepassten Farbrezeptur und der Farbvorlage erreicht ist, wobei (i) die Reflektionswerte R λ der Farbvorlage und der Eichstaffeln mittels einer geeigneten mathematischen Funktion so transformiert werden, dass alle transformierten Reflektionswerte R' λ zwischen 0 und 1 liegen, und (ii) die Berechnung der optischen Materialparameter nach der Kubelka-Munk-Näherung unter Verwendung der transformierten Reflektionswerte R' λ erfolgt.
Abstract:
Color calibration of color image rendering devices, such as large color displays (1500, 1600), which operate by either projection or emission of images, utilize internal color measurement instrument (1508) or external color measurement modules (1608) locatable on a wall or speaker. A dual use camera (1910, 1943) is provided for a portable or laptop computer (1900), or a cellular phone, handset, personal digital assistant or other handheld device (1930) with a digital camera (1943), in which one of the camera or a display (1904, 1931) is movable with respect to the other to enable the camera in a first mode to capture images of the display for enabling calibration of the display, and in a second mode for capturing image other than of the display. The displays may represent rendering devices for enabling virtual proofing in a network, or may be part of stand-alone systems and apparatuses for color calibration. Improved calibration is also provided for sensing and correcting for non-uniformities of rendering devices, such as color displays, printer, presses, or other color image rendering device.
Abstract:
The present invention relates to a method and a device for evaluating at least one surface, having the following method steps: illumination of the surface to be investigated, depiction of at least a part of the light reflected and/or refracted from the surface onto a spatially resolved receiver, and the production of an image, wherein both geometric coordinates and color coordinates are assigned to each image point. The invention is characterized in that a plurality of associated sub-areas is imaged, the sub-areas lying inside the image, that from the image points of each sub-area, a weighted lightness value and at least one weighted color value is generated, the plurality of weighted lightness values are each compared to a reference lightness value of a color control model, and each weighted color value is compared to a reference color value of a color control model, from which a lightness deviation (?Y) and at least one color deviation (?l, ?Q) are determined for each sub-area, and the determined lightness deviation (?Y) and/or the at least one determined color deviation (?l, ?Q) of each sub-area is compared to a prespecified first threshold value.
Abstract:
The present invention provides a plurality of representations of color that are stored in an electronic color library and that can be selected by a user. After a color selection is made, a plurality of color ink formulas and/or colorant formulas capable of producing the selected color are provided. Further, other selections can be made to define a substrate or other criteria that can impact the color ink formulas. A plurality of color ink and/or colorant formulas are provided and optimized in order to reduce or eliminate undesired effects caused by metamerism. The formulas can be transmitted over a communication network, such as the Internet or a local intranet to another party, such as color products manufacturers.
Abstract:
Sporting items such as soccer balls include a casing region and a graphic region that are defined by enhanced-visibility colors (EVCs) that are substantially complementary. Such EVCs can be selected to avoid colors associated with color confusion in color deficient individuals. In addition, such colors can be selected based on total reflectances to obtain a predetermined luminance contrast. EVCs can be selected based on separations of color coordinate locations using CIE chromaticity coordinates or CIE L-a-b coordinates or otherwise selected. Color selection can include consideration of anticipated viewing backgrounds in a general setting, or colors can be customized for a particular location and particular illumination conditions.
Abstract:
A process for refinishing or repainting a damaged paint area of a vehicle or part thereof using a computer-implemented method to determine a refinish paint formula that can form a refinish matching paint to match the color of the original paint; in this process: a) a color code which contains color data values of the original paint is acquired; c) the color code is entered into a computer containing a color cluster database and color clusters and each color cluster has a centroid and refinish paint formula associated therewith; c) the color clusters associated with the color code of the original paint are identified; d) color chips that correspond to each of the color clusters identified in step c) using the refinish paint formula associated with the centroid of each of the color clusters are prepared or alternatively color chips provided by a manufacturer of the refinish paint can be used; e) a matching chip having the closest color match to the original paint is determined visually; f) the refinish paint associated with the matching chip identified in step e) as the closest color match is selected as the refinish matching paint and spray applied to the damaged paint area by an operator using conventional techniques thereby matching the color characteristics of the refinish matching paint to the undamaged original paint of the vehicle.