Camera-based Rauheitsbestimmung for generative components produced

The present invention relates to a method and apparatus for generative manufacture of components by layerwise bonding of powder particles with each other and / or with an already formed semifinished product or substrate by selective interaction of the powder particles with a high energy beam (13) to form a layer, whereby a formed layer (14) with a camera (6) is detected, wherein a contour of the deposited layer (14) of the camera (6) the captured image of the deposited layer is determined, and wherein determining the roughness of the surfaces of the component formed from the contour becomes.