In order to quantitatively characterize the surface physical structure of a bundle of carbon fibers. scanning electron microscope (SEM) was used to photograph the fiber section and edge differential detection method was used to automatically identify the fiber boundary. By finding the smallest circumscribed convex polygon of fiber section and the minimum circumscribed rectangle of gro... https://www.marcelovicente.com/product-category/blond-studio-majimeches-step-1/