Assignments are considered a private work (unless published) and images can be used without permission as long as they are properly cited and fall under fair dealing or a similar provision. However, before your work is published, if the submission includes reproductions of copyright protected images the author of the submission must in some cases obtain written authorization from the copyright holder in order to reproduce this material for inclusion in the undergraduate research. If fair dealing or a similar provision applies, the material is usable under a Creative Commons or similar license, or the material is not protected by copyright (e.g., the work is in the public domain, the work is factual/data), permission may not be necessary.