Automatic inspecting and sorting method for e.g. plastic film, involves treating image or thermal image data of object to execute discrimination or characterization of object in terms of thickness of surface layer affect by radiation

摘要

The method involves treating image or thermal image data of a traveling object (1) for executing discrimination or a characterization of object in terms of thickness of object`s surface layer (4) affected by the radiation. Elapsing time between the application of thermal radiation and the thermal exposure is sufficient for homogenous distribution of heat energy absorbed in the surface layer, and sufficiently short for the lateral thermal diffusion, radiative cooling and convective cooling. An independent claim is also included for an automatic non metallic object sorting and inspecting machine.