Akzo Nobel Coatings International B.v.

Eric Jacob Jan Kirchner

Swie Lan Njo

Roelof Johannes Baptist Gottenbos

Margot Julia Vlot

Ivo Bernardus Nicolaas Van Der Lans

André Half

Peter Mark Spiers

Klaas Hendrik De Haas

Jeroen Hoogink

Unnikrishnan Koodali Thazhathuveetil

A method for matching a vehicle coating comprising a basecoat and a clearcoat comprising: providing a database including a plurality of records for different basecoats, each comprising for a combination of one basecoat with a reference clearcoat having a reference gloss value i) a set of reflectance spectra for a plurality of aspecular angles, and ii) data representative of a paint formulation corresponding to the basecoat; measuring a gloss value and a set of reflectance spectra of the vehicle coating to obtain a measured gloss value and a measured set of reflectance spectra; correcting the measured set of reflectance spectra to obtain a corrected set of reflectance spectra by using gloss correction parameters based on the measured gloss value and the reference gloss value; selecting a candidate basecoat closest matching the corrected reflectance spectra; and obtaining from the database a paint formulation corresponding to the selected candidate basecoat.

Method for matching a coating of any gloss level

A computer implemented method and system for generating a visualization of a stained wood substrate are provided. The method includes receiving an image of the wood substrate to be stained; subdividing the image i-14 into a plurality of sub-images, each sub-image corresponding to the portion of the image having a color falling in a respective one of color bands; for each sub-image, retrieving a reflectance curve representative for the wood substrate for the color corresponding to the sub-image; retrieving absorption and scattering values for the stain; for each sub-image, determining the reflectance curve representative for the stained wood based on the absorption and scattering values for the stain and the reflectance curve for the wood substrate for that sub-image; and for each pixel of each sub-image, determining a color based on the reflectance curve representative for the stained wood, resulting in a generated image of the substrate after applying the stain.

Visualizing wood staining

The invention relates to a method of selecting the most probable variant of a matching paint candidate color standard for vehicle repair using a mobile device having a color 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 verbal or symbolic characterizations describing visual differences between a selected candidate color standard and identified variants are displayed on the display of the mobile device.

Colour variant selection method using a mobile device

The invention relates to a method of displaying an image of an effect coating having texture and color properties on an electronic display device, using measured color data and measured texture data as input to generate the image, wherein the textured image is displayed with visual color properties which are maintained on a prescribed level independent of possible variations in texture properties.

Display of effect coatings on electronic display devices

Process of color calibrating an electronic display screen comprising the steps of displaying at least one trial color of at least one physical sample having standardized color on an electronic display screen, visually comparing the color of the at least one physical sample and the at least one trial color displayed on the electronic display screen, selecting the trial color having the best visual match with the at least one physical sample, and using the selected trial color on the electronic display screen having the best visual match with the at least one physical sample color to color calibrate the electronic display screen.

Colour calibration of electronic display screens

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.

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Leiden, Netherlands

Eric Jacob Jan Kirchner