Abstract:
Assembly (2) for selecting matching colours to base colours of user articles. The assembly comprises a substrate (4) provided with a plurality of selection areas (5) that have mutually differing selection colours. The assembly further comprises a cover (6) having a first main surface (8) provided with a first base colour and having a second main surface (9). The cover is provided with a window (10). The assembly is provided with holding means (12) for holding the cover to the substrate in a first cover position wherein, by means of the window, at least one selection area is exposed. The second main surface is provided with a second base colour. The window and the holding means are arranged for holding the cover to the substrate in a second cover position wherein, by means of the window, at least one selection area is exposed.
Abstract:
A method is provided for testing a diffusely reflective liquid for colour strength, said liquid comprising particles in a carrier medium, e.g. white emulsion paint based on titanium dioxide. The method comprises measuring in situ a lightness parameter of the liquid, of the carrier medium and of the liquid diluted with amounts of carrier medium; and determining from said measurements a dilution parameter indicating the amount of carrier medium needed to produce a predetermined reduction in the lightness parameter of the liquid, said dilution parameter providing an indication of colour strength. The lightness parameter may be L* in the CIE L*, a*, b* colour space, and the test may be carried out using a diffuse reflection probe (10) configured to direct light from said probe (10) into the liquid and configured to collect a portion of the light from the probe (10) diffusely reflected by the paint for determining the lightness parameter. The results may be used for process control e.g. in emulsion paint manufacture.
Abstract:
The invention relates to a method of selecting the most probable variant of a matching paint candidate colour standard for vehicle repair using a mobile device having a colour display and an input unit and which is capable of data exchange with a central computer via an at least partly wireless communication line, wherein information indicating the location of the mobile device is sent to the central computer via the at least partly wireless communication line. The indication of the location of the mobile device is taken into account in the selection of candidate colour standards and/or the selection of variants.
Abstract:
There is described a device (1) for offline inspection and color measurement of printed sheets for the production of banknotes and like printed securities, comprising (i) a console (10) having a supporting surface (10a) for supporting a sample printed sheet (S), (ii) a multipurpose measuring apparatus (20), which multipurpose measuring apparatus (20) comprises multiple sensors (22, 23) including at least one camera (22) for taking images of selected portions of the sample printed sheet (S) and a color measurement sensor (23) for performing spectrophotometric, colorimetric, and/or densitometric measurements at selected locations on the sample printed sheet (S), (iii) a display (30) for displaying the images taken by the camera (22) and the measurements performed by the color measurement sensor (23), and (iv) a control and processing unit (40) coupled to the multipurpose measuring apparatus (20) and the display (30). The device (1) comprises a moveable sensor beam (200) housing the multipurpose measuring apparatus (20), which moveable sensor beam (200) is displaceable along an x-axis over the supporting surface (10a) of the console (10) and over the entire surface of the sample printed sheet (S) located on the supporting surface (10a), the multiple sensors (22, 23) being mounted on a common sensor head (21) which is displaceable within the moveable sensor beam (200) along a y-axis so that the multipurpose measuring apparatus (20) can selectively take images of selected portions of the sample printed sheet (S) by means of the camera (22) or perform measurements at selected locations on the sample printed sheet (S) by means of the color measurement sensor (23). The control and processing unit (40) is configured to control displacement of the moveable sensor beam (200) along the x-axis and of the sensor head (21) along the y-axis.
Abstract:
A method for accurately and easily calibrating the wavelength of light detected by spectral sensors for generating a color conversion LUT without using special sensors includes: acquiring a spectral reflectance 402 of a target slave to be corrected and a spectral reflectance 401 of a master serving as a reference; acquiring an intersection of the spectral reflectance 401 and wavelength difference detect lines DL in a wavelength difference search range 403 of the spectral reflectance 401; acquiring an intersection of the spectral reflectance 402 and wavelength difference detect lines DL in a wavelength difference search range 403 of the spectral reflectance 402; acquiring a wavelength detected with the spectral reflectance 401 from the intersection of the spectral reflectance 401 and the wavelength difference detect lines DL; acquiring a pixel position of the light receiving element of the spectral reflectance 402 from the intersection of the spectral reflectance 402 and the wavelength difference detect line DL; and updating the contents of a table indicating a correspondence relation between a pixel position of the slave and a detected wavelength based on the acquired pixel position and wavelength.
Abstract:
A computer-implemented method of repairing a vehicle is disclosed. The method includes steps of estimating the cost of performing repairs to a damaged vehicle and determining a refinish paint formulation for refinishing a vehicle by conducting a computer-based search for a refinish paint formulation that best matches the vehicle's original finish prior to performing the repair work on the vehicle, where the repair work comprises performing any body work, mechanical systems work and/or electrical systems work and refinishing the vehicle.
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:
Ein lernendes Verfahren zur Farbrezeptberechnung pigmentierter Farbtöne angepasst an einen Zielfarbton, umfassend die Schritte i) Aufstellen je einer Wirkungsmatrix durch geeignete Eichstaffeln für die in einem Färbesystem enthaltenen Bestandteile, i) Bestimmen der optischen Materialparameter des Zielfarbtons, ii) Auswahl einer geeigneten Ausgangsrezeptur, iii) Bestimmung des Farbanstands zwischen der Ausgangsrezeptur und dem Zielfarbton, iv) Berechnung eines ersten angepassten Farbrezepts unter Berücksichtigung der Wirkungsmatrizen, v) Wiederholung der Schritte iv) und v) bis eine akzeptable Restfarbdifferenz erreicht ist, bei dem die Wirkungsmatrizen im laufenden Prozess ständig mit farbtonrelevanten Informationen aktualisiert werden, erzielt eine Verbesserung der bisher bekannten Verfahren zur Farbtonrezeptberechnung sowohl hinsichtlich der Reduktion der Anzahl der notwendigen Tönschritte als auch hinsichtlich der Minimierung des Restfarbabstands.