Abstract:
A method for matching colour properties and texture properties of a repair paint to colour properties and texture properties of a paint film on a substrate to be repaired is provided. In the method, the texture of the paint film is imaged with a digital imaging device, the imaged texture is analyzed using image analysis software, texture data is calculated, and the repair paint is formulated on the basis of the concentrations of paint modules, wherein each paint module is associated to specified texture data and colour data.
Abstract:
An optical characteristic measuring apparatus of the invention is configured in such a manner that a specular reflection light component in reflection light from an object to be measured is received, and shake of the apparatus is detected based on the amount of the received light. The optical characteristic measuring apparatus having the above arrangement enables to precisely measure an optical characteristic of the object to be measured, without the need of providing a mechanical switch or a like device, and without depending on the shape of the object to be measured.
Abstract:
A paint color is specified from a computer graphics picture by displaying a computer graphics picture suitable for the impression of a desired paint color on a display unit, obtaining color information on displayed colors in two or more designated regions on the displayed picture, and searching and selecting a paint color having color information approximate to the color information on the display colors from a database previously storing color information on a plurality of paint colors.
Abstract:
The present invention provides an apparatus and method for characterizing the photometric and/or colourmetric properties of a light source. The apparatus comprises a detector system which generates data indicative of at least spectroradiometric data for at least a portion of the light emitted by the light source. The apparatus further comprises a manipulation stage configured to control the relative position between the detector system and the light source. In addition, the apparatus comprises a control and processing system configured to control operation of the detector system, operation of the manipulation stage and record the data and the relative position of the detector system associated therewith. The control and processing system is further configured to process the collected data for determination of the photometric and/or colourmetric properties of the light emitted by the light source.
Abstract:
In accordance with embodiments of the present invention, a goniospectrophotometer is provided for quickly obtaining a goniospectrum using a goniospectrophotometer. In some embodiments, a parabolic reflector is used to optically transform the angular space of a source at the parabola focus into a linear space and facilitate the use of a single diffracting element and area camera to simultaneously measure the angular spectrum of the source. Spectra corresponding to zenith angles of light reflection by the parabolic reflector can be acquired by a detector and analyzed in a computer.
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.
Abstract:
A method for mobile on- and off-line monitoring of coloured and high-gloss automobile component surfaces includes a camera-supported optical scanning of the automobile surface by means of an angle-dependent spectrophotometer, connected to and initialising an optical neuro-fuzzy structured image data bank, which permits a preparation of the measured signal coming from the detector by means of a computer-aided optical quality data bank and allows an evaluation of the measured automobile surfaces. The data link occurs via a neuronal network to a control unit for surface measurement systems, connected to a production planning system, a customer information system and the product unit for automobile painting/coating.
Abstract:
A device for examining the optical properties of surfaces having at least one first radiation device emitting radiation at least at one first predetermined spatial angle to a surface to be examined, at least one first detector device for capturing the radiation emitted to and reflected back from the surface, wherein the detector device allows a local resolution of detected radiation and is positioned at least at a second predetermined spatial angle relative to the surface. At least one spatial angle at which the radiation device and/or the detector device are positioned, is variable.
Abstract:
In a multi-angle colorimeter having an illumination system that illuminates a sample surface and a plurality of light receiving systems that receive reflected light therefrom, an illumination system for orientation error detection is provided that illuminates the sample surface from substantially close direction to the normal of the sample surface. Actual measured reflectance factor is corrected based on the specific approximation function obtained from the measured reflectance factor and detected orientation error.
Abstract:
The method of identifying an effective pigment comprises:a first step of imaging a target effective pigment to obtain image data thereof;a second step of subjecting the obtained image data to background processing and extracting image data concerning a region containing one particle of the effective pigment as image data for processing;a third step of extracting image characteristic parameters from the image data for processing; anda fourth step of identifying the target effective pigment, based on the image characteristic parameters of the target effective pigment extracted in the third step, using a pre-prepared database that stores information on various kinds of effective pigments in such a manner as to correlate with the image characteristic parameters of various kinds of effective pigments extracted by conducting the second and third steps.