The thing with Lena is that the whole reasoning about this topic is wrong. Their argument is that using Lena might be offensive to women and might prevent them from studying STEM courses.
I'm working in this field for a very long time. The issue I have with their whole course of argumentation is that Image Processing is taught in a very late stage of the CS degree because you first need to learn math, data-structures, complexity, logic, and whatnot. Even then, you don't come in contact with scientific publications. The first time I saw Lena was well after I got my university degree and was…