METHOD FOR PAINTING AND FOR THE QUALITY CONTROL OF SURFACES

摘要

The present invention relates to a method for painting and for the quality control of surfaces, particularly color-specified surfaces of bodywork and accessory and mounting parts thereof for motor vehicles. The object of the present invention is to provide an improved simulation of the perception of the human eye for evaluating a surface, particularly the paint coating of a bodywork part. Particularly larger areas (>500 cm2) should be able to be thereby evaluated with low effort, but rapidly and reliably. An image of the surface to be evaluated is thereby generated, wherein the image points, in addition to the geometric coordinates thereof, are further associated with color coordinates, a plurality of two-dimensional interconnected sub-regions are formed within the two-dimensional image, a weighted brightness value and at least one weighted color value are generated from the image points of each sub-region, the plurality of weighted brightness values each are compared to a reference brightness value of a color control model and the plurality of weighted color values each are compared to a reference color value of a color control model, and a brightness deviation (?Y) and at least one color deviation (?l, ?Q) are derived for each sub-region, a trend value and a permissible spread are each determined from one of the derived brightness deviations (?Y) and color deviations (?l, ?Q), and said trend value is predicted for a prescribed number of bodies, and the sum of the predicted trend value and the determined permissible spread are compared to a prescribed first limit value for each element of the data series.