These are easy for your respective institutions to fix. Your identity provider administrators need to add the "mdui:Logo" tag to their InCommon metadata entries. Our discovery service will automatically pick them up.
Take a look at
https://incommon.org/federation/info/all-entities.html and find your respective institutions. When you click your institution you'll see "No Image Provided" where the logo should be. Now look at "North Carolina State University" or "University of Iowa", for instance, to see that those institutions have provided "mdui:Logo" in their metadata.
Thanks,
Tom