Abstract: A method for analyzing the visual coarseness of a paint film comprising effect pigments by means of a measuring device having a cavity with reflective inner walls and a sample opening, the device further comprising illumination means for illumination of the cavity and a digital imaging device directed from the cavity to the sample opening and arranged at a distance from the centre normal of the sample opening, the method comprising the following steps: presenting a sample of the paint film to the cavity via the sample opening; illuminating the cavity; activating the imaging device to record an image of the sample; communicating the recorded image data to a computer programmed with image analysis software to analyze the recorded image. The optical axis of the imaging device is set at an angle of 3-12 degrees with the centre normal of the sample opening.

Abstract: A method for imaging a sample by means of a device having a cavity with black inner walls and a sample opening, the device further comprising illumination means for illumination of the cavity and a digital imaging device directed from the cavity to the sample opening, the method comprising the following steps: presenting a sample to the cavity via a sample opening; illuminating the cavity; activating the imaging device to record an image of the sample; communicating the recorded image data to a computer programmed with image analysis software to analyze the recorded image, characterized in that the inner wall of the cavity is light absorbing and in that it is at least partly provided with light point sources distributed over at least a part of the inner wall of the cavity and a selection of the light sources, dependent on the desired light conditions, is activated.

Abstract: Method for matching of a repair paint to texture properties and optionally colour of a paint film on a substrate to be repaired characterized in that a database is used of paint modules with specified texture data, which are used to calculate expected texture of a combination of modules on basis of concentrations of the paint modules.