2022-03-082022-03-082004https://publica.fraunhofer.de/handle/publica/306288DE 20317095 U UPAB: 20040514 NOVELTY - A cast metal part surface error inspection unit has a light source lighting the surface approximately perpendicular and light detector imaging (22) the reflected light with source detector beam paths coupled by a beam splitter with processor algorithm grouping pixels above a threshold for examination for errors and construction of object edge contours. USE - Surface inspection unit for cast metal machine, car and sanitary equipment parts. ADVANTAGE - The image processing algorithm is rapid enough for production inspection use and does not produce artifacts.de608utility model2003-20317095