MACHINE VISION SURFACE CHARACTERIZATION SYSTEM

摘要

This invention is a surface inspection system including a light source (111) having a sharp edge between dark and bright and a video camera (121) imaging this edge reflected from the surface. The light intensity of the light source (111) is controlled using a light intensity sensor (115). An optical system (123) focusses an image of the light source (111) at the video camera with sufficient depth of focus to include the surface (10) to be inspected. The exposure duration is set to prevent blurring if the surface is moving. A surface quality computation apparatus computes at least one measure of surface quality, such as gloss, distinctness of reflected image and orange peel of the surface, From the video image signal. This surface quality computation apparatus preferably includes a frame grabber (130) and a general purpose digital computer (140).