The invention relates to an automatic system for repairing surfaces having natural patterns, particularly wood panels, wherein after the automatic detection and repair of the faulty regions by smoothing or doweling, the visually apparent repair regions are decorated locally by a numerically controlled decoration process, particularly an ink jet printing technology. To this end, the panel is captured optically by a scanner, which in particular can detect colors, in addition to an image generator suitable for detecting the faulty regions. From the global color and structure characteristics of the panel and the local color and structure characteristic of each individual faulty region, local decoration patterns to be applied automatically are derived, which allow the faulty region to not be apparent any longer and give the panel a desired aesthetic appearance both locally and globally.
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