No, scanning is allowed within the same parameters as any other method of copying.
If you want to scan something, you may do so only if the use falls within one of the exceptions in the Copyright Act, such as fair dealing, or where no permission is required, such as scanning a public domain work (one in which copyright has expired).
If you want to scan a work that is still in copyright and add it to a website under fair dealing, you need to be sure that the website is password protected (e.g., SFU’s learning management system) and restricted to students enrolled in your course, and follow the fair dealing limits.
If what you want to do falls outside the exceptions and is not in the public domain, you will need to get the copyright owner’s permission.