Automatic inspection 100% of surfaces with trevista

Topographical defects that they are notable for the function of the piece can distinguish of irrelevant stains caused, for example, by lubricantes. An lighting structured diffuse of the piece and a special algorithm guarantee images of high quality for the subsecuente automatic evaluation.

The three-dimensional form of the surface is visualised using topographical images in which until defects of so alone some micrometers of depth result visible. These defects can be located quickly, fiablemente and free of interferences.

Trevista Is based in a technology patented ‘shape from shading', in Spanish ‘forms deduced of shaded'. It deduces and it calculates the information on the three-dimensional form of an object from the shadows that believe the elevations of the surface.

For the inspection employs a diffuser in shape of dome that is lit of way structured with several sources of light. In base of several images of entrance calculates four images of result. These include two images of inclination in steering x and and, which are mainly used to evaluate defects with a preferential orientation.

The image of curvature is invariant to the orientation of the defect and contains all the topographical information of the two images of inclination. A sight 3D of the surface can generate of optional way in only some fractions of second. The image of texture allows to inspect the reflectividad of the surface of the way that mark or oxidation can be located. In the example of the coin the different values of grey indicate different properties of the material.